User login
Technique
The patient is positioned on a radiolucent table, and a mobile fluoroscopy unit is available. A tourniquet is applied to the upper thigh but typically is not inflated during the percutaneous hardware removal portion of the operation. It is crucial to have information on retained implants so the correct screwdrivers for screw removal can be selected. In addition, provisions for stripped screws should be made. In each of the 3 cases we managed, the Synthes Screw Removal Set was available. Presence of an implant system known to have problems with cold welding of screws (eg, Less Invasive Stabilization System; Synthes) may necessitate additional preparations, such as making conical extraction devices available.1
After preoperative administration of antibiotics, the surgeon typically removes only those proximal tibia screws that are preventing insertion of the tibial base plate. Fluoroscopic guidance is used to locate these screws and then remove them with percutaneous stab incisions. (Retained plates are not removed.) The exact method of localizing and removing the screws percutaneously is crucial. A small stab incision is made in the dermal layer. The number of stab incisions to be made depends on the number of screws to be removed. One small incision is needed for each screw hole. Occasionally mobilizing the skin and redirecting the screwdriver in the deep tissues can allow 2 screws to be removed through a single skin wound. The screwdriver head can be inserted through the muscle and fascial layers without the need for deep dissection. The plate is then felt with the screwdriver and the screw head located. It is very important that the screw head be adequately engaged to prevent stripping. The surgeon should not rush this step. The C-arm can be helpful here. Fluoroscopy not only can guide the screwdriver to the screw hole but can confirm the screwdriver is at right angles to the plate, not oblique. Only when the surgeon is completely satisfied that the screw head is well engaged should the attempt to back out the screw be made. If the screw strips, the screwdriver can be removed, and an attempt can be made to insert a percutaneous stripped screw removal device.1 If this fails, then the technique must be abandoned for a more traditional approach.
Plating complex tibial plateau fractures through a separate posteromedial approach is now popular.2 The deep location and screw orientation of posteromedial hardware make percutaneous removal unfeasible. In these cases, a separate posteromedial incision may be needed—usually posterior enough so it minimally compromises the anterior soft tissues. The incision typically uses the old posteromedial surgical scar but may not need to be as large as the original approach, as only selected screws need be removed. The saphenous neurovascular bundle may still be at risk, depending on the location of these incisions. The plate is not removed.
After the necessary screws are removed, the tourniquet can be inflated, if desired. The total knee arthroplasty (TKA) then proceeds in usual fashion through a single incision and a medial parapatellar arthrotomy.
Results
Between January 2009 and February 2014, Dr. Georgiadis converted 3 cases of retained tibial hardware and severe knee arthrosis to a TKA in a single operation. These cases were reviewed after Institutional Review Board approval was obtained. One patient underwent a closing-wedge high tibial osteotomy 14 years earlier, and the other 2 sustained tibial plateau fractures. Clinical details of the 3 cases are presented in the Table. 
In 2 of the cases, anterolateral surgical scars were present. New, separate percutaneous stab incisions were used to remove screws, which meant less of the original skin incision could be used for the TKA (Figures 1A, 1B). 
In the third case, involving multiple plates, a similar strategy was used, but an additional small posteromedial incision was required (Figures 2-5). The TKA then proceeded through a new midline incision. This case was performed for tibiofemoral arthrosis in the setting of an acute distal femur fracture, but this had no bearing on the technique. 
Tibial base plates were inserted in the usual manner. Length and type of tibial stem were left to the discretion of the surgeon. There were no changes from the usual surgical technique. All patients went on to routine, uneventful wound healing. Follow-up ranged from 10 months to 59 months.
Discussion
If the decision is made to proceed with TKA after previous knee surgery, careful preoperative planning is needed. 
For young patients with knee arthrosis and angular deformity, it has been recommended that proximal tibial osteotomy be performed to delay the need for joint replacement.3,4 Although a wide variety of osteotomy techniques is available, plates and screws are often used. With long-term follow-up, knee arthrosis can be expected to progress, and some of these cases will be converted to knee arthroplasty.3,4Displaced tibial plateau fractures are intra-articular injuries. Treatment requires surgery. 
Blood work for inflammatory markers (erythrocyte sedimentation rate, C-reactive protein level) should be performed before surgery. In the event of an elevated laboratory value or clinical suspicion (joint effusion), the joint should be aspirated before any arthroplasty procedure.
Preoperative planning for hardware removal is essential.22 The correct screwdriver and a metal cutting burr (for stripped screws) should be available. These needs may be anticipated with certain types of locking plates.1
Surgical incision planning is also crucial in preventing wound problems that can lead to deep prosthetic infection.23,24 Blood supply to the skin of the anterior knee is primarily medially derived; incisions that are more medial put lateral skin flaps at risk.25 Use of the most recently healed or previous lateral-based scars has been recommended. In cases of adherent skin or poor soft-tissue envelope, plastic surgery (eg, soft-tissue expansion, gastrocnemius muscle, fasciocutaneous flaps) may be necessary.26-28Surgeons must decide to perform either a single operation or a multiple-stage operation. Naturally, most patients prefer a single procedure. All previous hardware can be removed, or only the hardware that is preventing insertion of the tibial base plate. Removing the least amount of hardware is advantageous in that surgical stripping and soft-tissue damage are reduced.
In this initial series, we successfully converted 3 tibial implants to TKAs (each as a single operation) by removing only screws in percutaneous or minimally invasive fashion—the prosthetic joint approach did not involve additional soft-tissue stripping. We did not specifically record the time needed for implant removal separately from the time needed for TKA. As the Table shows, this technique can lengthen surgery. Operative time and blood loss can be more variable because of numerous factors, including scar tissue and an altered surgical field from previous surgery, in addition to hardware removal difficulties. Therefore, surgeons should budget more operative time for these procedures. Although longer operations theoretically may increase infection rates, we think the risk is mitigated by the percutaneous aspects of the described technique.
We do not think that most orthopedic surgeons addressing retained plate–screw constructs consider minimally invasive screw removal and plate retention. To our knowledge, the literature includes only 1 case report of a similar technique.29This technique has many potential drawbacks, the foremost being use of intraoperative fluoroscopy. For more complex fractures, fluoroscopy time can be significant if the surgeon is committed to a true percutaneous approach (Table). In addition, use of a mobile fluoroscopy unit adds personnel to the operating theater, which potentially increases the infection rate. There may be cases in which tibial hardware interferes with tibial cuts, necessitating plate removal, but we did not encounter this in our series. This technique is potentially time-consuming. Operating room time can be expected to increase relative to wide exposures that allow quick access to existing implants. For this reason, some surgeons may decide to forgo this technique. Most modern proximal tibial fracture plates are contoured to fit well over the bone. However, some may still be prominent, and surgeons may choose to perform an open approach to remove them. Last, the clinical impact of plates retained without screws in the proximal tibia is not known. Theoretically, they may still act as a nidus for occult infection, and may act as a stress riser for peri-implant fracture. Therefore, for each patient, the surgeon must decide if the extra surgical time, fluoroscopy exposure, and plate retention are worthwhile.
In this 3-case series, screws were removed percutaneously over the proximal tibia. There were no neurovascular injuries in these cases, though there is potential for nerve and artery injuries with percutaneous screw removal, as in the anterolateral area of the distal third of the tibia.30,31 Thus, our technique may not be applicable in such cases. Most patients with plates and screws retained after proximal tibial surgery do not need to have the screws removed from the distal tibia. There also is the potential for saphenous nerve injury if a small medial or posteromedial incision is made. No such injury occurred in our small series.
Surgeons must consider many factors when deciding whether to proceed with TKA in the setting of existing tibial hardware. If staged reconstruction is not planned, consideration can be given to percutaneous screw removal without plate removal in an attempt to minimize further soft-tissue stripping. This has the theoretical advantage of decreasing wound complications. We have been pleased with our initial patient experience and continue to use this technique.
Am J Orthop. 2016;45(7):E481-E486. Copyright Frontline Medical Communications Inc. 2016. All rights reserved.
1. Georgiadis GM, Gove NK, Smith AD, Rodway IP. Removal of the Less Invasive Stabilization System. J Orthop Trauma. 2004;18(8):562-564.
2. Georgiadis GM. Combined anterior and posterior approaches for complex tibial plateau fractures. J Bone Joint Surg Br. 1994;76(2):285-289.
3. Insall JN, Joseph DM, Msika C. High tibial osteotomy for varus gonarthrosis. A long-term follow-up study. J Bone Joint Surg Am. 1984;66(7):1040-1048.
4. Sprenger TR, Doerzbacher JF. Tibial osteotomy for the treatment of varus gonarthrosis. Survival and failure analysis to twenty-two years. J Bone Joint Surg Am. 2003;85(3):469-474.
5. Moore TM, Patzakis MJ, Harvey JP. Tibial plateau fractures: definition, demographics, treatment rationale, and long-term results of closed traction management or operative reduction. J Orthop Trauma. 1987;1(2):97-119.
6. Shah SN, Karunakar MA. Early wound complications after operative treatment of high energy tibial plateau fractures through two incisions. Bull NYU Hosp Joint Dis. 2007;65(2):115-119.
7. Yang EC, Weiner L, Strauss E, Sedin E, Kelley M, Raphael J. Metaphyseal dissociation fractures of the proximal tibia. An analysis of treatment and complications. Am J Orthop. 1995;24(9):695-704.
8. Young MJ, Barrack RL. Complications of internal fixation of tibial plateau fractures. Orthop Rev. 1994;23(2):149-154.
9. Luo CF, Sun H, Zhang B, Zeng BF. Three-column fixation for complex tibial plateau fractures. J Orthop Trauma. 2010;24(11):683-692.
10. Barei DP, Nork SE, Mills WJ, Henley MB, Benirschke SK. Complications associated with internal fixation of high-energy bicondylar tibial plateau fractures utilizing a two-incision technique. J Orthop Trauma. 2004;18(10):649-657.
11. Ruffolo MR, Gettys FK, Montijo HE, Seymour RB, Karunakar MA. Complications of high-energy bicondylar tibial plateau fractures treated with dual plating through 2 incisions. J Orthop Trauma. 2015;29(2):85-90.
12. Honkonen SE. Degenerative arthritis after tibial plateau fractures. J Orthop Trauma. 1995;9(4):273-277.
13. Volpin G, Dowd GS, Stein H, Bentley G. Degenerative arthritis after intra-articular fractures of the knee. Long-term results. J Bone Joint Surg Br. 1990;72(4):634-638.
14. Mehin R, O’Brien P, Broekhuyse H, Blachut P, Guy P. Endstage arthritis following tibia plateau fractures: average 10-year follow-up. Can J Surg. 2012;55(2):87-94.
15. Wasserstein D, Henry P, Paterson JM, Kreder HJ, Jenkinson R. Risk of total knee arthroplasty after operatively treated tibial plateau fracture: a matched-population-based cohort study. J Bone Joint Surg Am. 2014;96(2):144-150.
16. Meding JB, Keating EM, Ritter MA, Faris PM. Total knee arthroplasty after high tibial osteotomy. A comparison study in patients who had bilateral total knee replacement. J Bone Joint Surg Am. 2000;82(9):1252-1259.
17. Parvizi J, Hanssen AD, Spangheli MJ. Total knee arthroplasty following proximal tibial osteotomy: risk factors for failure. J Bone Joint Surg Am. 2004;86(3):474-479.
18. Windsor RE, Insall JN, Vince KG. Technical considerations of total knee arthroplasty after proximal tibial osteotomy. J Bone Joint Surg Am. 1988;70(4):547-555.
19. Civinini R, Carulli C, Matassi F, Villano M, Innocenti M. Total knee arthroplasty after complex tibial plateau fractures. Chir Organi Mov. 2009;93(3):143-147.
20. Saleh KJ, Sherman P, Katkin P, et al. Total knee arthroplasty after open reduction and internal fixation of fractures of the tibial plateau: a minimum five-year follow-up study. J Bone Joint Surg Am. 2001;83(8):1144-1148.
21. Weiss NG, Parvizi J, Trousdale RT, Bryce RD, Lewallen DG. Total knee arthroplasty in patients with a prior fracture of the tibial plateau. J Bone Joint Surg Am. 2003;85(2):218-221.
22. Hak DJ, McElvany M. Removal of broken hardware. J Am Acad Orthop Surg. 2008:16(2):113-120.
23. Della Valle CJ, Berger RA, Rosenberg AG. Surgical exposures in revision total knee arthroplasty. Clin Orthop Relat Res. 2006;(446):59-68.
24. Vince KG, Abdeen A. Wound problems in total knee arthroplasty. Clin Orthop Relat Res. 2006;(452):88-90.
25. Colombel M, Mariz Y, Dahhan P, Kénési C. Arterial and lymphatic supply of the knee integuments. Surg Radiol Anat. 1998;20(1):35-40.
26. Namba RS, Diao E. Tissue expansion for staged reimplantation of infected total knee arthroplasty. J Arthroplasty. 1997;12(4):471-474.
27. Markovich GD, Dorr LD, Klein NE, McPherson EJ, Vince KG. Muscle flaps in total knee arthroplasty. Clin Orthop Relat Res. 1995;(321):122-130.
28. Hallock GG. Salvage of total knee arthroplasty with local fasciocutaneous flaps. J Bone Joint Surg Am. 1990;72(8):1236-1239.
29. Roswell M, Gale D. Total knee arthroplasty following internal fixation of a lateral tibial plateau fracture. Injury Extra. 2005;36(8):352-354.
30. Deangelis JP, Deangelis NA, Anderson R. Anatomy of the superficial peroneal nerve in relation to fixation of tibia fractures with the Less Invasive Stabilization System. J Orthop Trauma. 2004;18(8):536-539.
31. Pichler W, Grechenig W, Tesch NP, Weinberg AM, Heidari N, Clement H. The risk of iatrogenic injury to the deep peroneal nerve in minimally invasive osteosynthesis of the tibia with the Less Invasive Stabilisation System: a cadaver study. J Bone Joint Surg Br. 2009;91(3):385-387.
Technique
The patient is positioned on a radiolucent table, and a mobile fluoroscopy unit is available. A tourniquet is applied to the upper thigh but typically is not inflated during the percutaneous hardware removal portion of the operation. It is crucial to have information on retained implants so the correct screwdrivers for screw removal can be selected. In addition, provisions for stripped screws should be made. In each of the 3 cases we managed, the Synthes Screw Removal Set was available. Presence of an implant system known to have problems with cold welding of screws (eg, Less Invasive Stabilization System; Synthes) may necessitate additional preparations, such as making conical extraction devices available.1
After preoperative administration of antibiotics, the surgeon typically removes only those proximal tibia screws that are preventing insertion of the tibial base plate. Fluoroscopic guidance is used to locate these screws and then remove them with percutaneous stab incisions. (Retained plates are not removed.) The exact method of localizing and removing the screws percutaneously is crucial. A small stab incision is made in the dermal layer. The number of stab incisions to be made depends on the number of screws to be removed. One small incision is needed for each screw hole. Occasionally mobilizing the skin and redirecting the screwdriver in the deep tissues can allow 2 screws to be removed through a single skin wound. The screwdriver head can be inserted through the muscle and fascial layers without the need for deep dissection. The plate is then felt with the screwdriver and the screw head located. It is very important that the screw head be adequately engaged to prevent stripping. The surgeon should not rush this step. The C-arm can be helpful here. Fluoroscopy not only can guide the screwdriver to the screw hole but can confirm the screwdriver is at right angles to the plate, not oblique. Only when the surgeon is completely satisfied that the screw head is well engaged should the attempt to back out the screw be made. If the screw strips, the screwdriver can be removed, and an attempt can be made to insert a percutaneous stripped screw removal device.1 If this fails, then the technique must be abandoned for a more traditional approach.
Plating complex tibial plateau fractures through a separate posteromedial approach is now popular.2 The deep location and screw orientation of posteromedial hardware make percutaneous removal unfeasible. In these cases, a separate posteromedial incision may be needed—usually posterior enough so it minimally compromises the anterior soft tissues. The incision typically uses the old posteromedial surgical scar but may not need to be as large as the original approach, as only selected screws need be removed. The saphenous neurovascular bundle may still be at risk, depending on the location of these incisions. The plate is not removed.
After the necessary screws are removed, the tourniquet can be inflated, if desired. The total knee arthroplasty (TKA) then proceeds in usual fashion through a single incision and a medial parapatellar arthrotomy.
Results
Between January 2009 and February 2014, Dr. Georgiadis converted 3 cases of retained tibial hardware and severe knee arthrosis to a TKA in a single operation. These cases were reviewed after Institutional Review Board approval was obtained. One patient underwent a closing-wedge high tibial osteotomy 14 years earlier, and the other 2 sustained tibial plateau fractures. Clinical details of the 3 cases are presented in the Table.
In 2 of the cases, anterolateral surgical scars were present. New, separate percutaneous stab incisions were used to remove screws, which meant less of the original skin incision could be used for the TKA (Figures 1A, 1B).
In the third case, involving multiple plates, a similar strategy was used, but an additional small posteromedial incision was required (Figures 2-5). The TKA then proceeded through a new midline incision. This case was performed for tibiofemoral arthrosis in the setting of an acute distal femur fracture, but this had no bearing on the technique.
Tibial base plates were inserted in the usual manner. Length and type of tibial stem were left to the discretion of the surgeon. There were no changes from the usual surgical technique. All patients went on to routine, uneventful wound healing. Follow-up ranged from 10 months to 59 months.
Discussion
If the decision is made to proceed with TKA after previous knee surgery, careful preoperative planning is needed.
For young patients with knee arthrosis and angular deformity, it has been recommended that proximal tibial osteotomy be performed to delay the need for joint replacement.3,4 Although a wide variety of osteotomy techniques is available, plates and screws are often used. With long-term follow-up, knee arthrosis can be expected to progress, and some of these cases will be converted to knee arthroplasty.3,4Displaced tibial plateau fractures are intra-articular injuries. Treatment requires surgery.
Blood work for inflammatory markers (erythrocyte sedimentation rate, C-reactive protein level) should be performed before surgery. In the event of an elevated laboratory value or clinical suspicion (joint effusion), the joint should be aspirated before any arthroplasty procedure.
Preoperative planning for hardware removal is essential.22 The correct screwdriver and a metal cutting burr (for stripped screws) should be available. These needs may be anticipated with certain types of locking plates.1
Surgical incision planning is also crucial in preventing wound problems that can lead to deep prosthetic infection.23,24 Blood supply to the skin of the anterior knee is primarily medially derived; incisions that are more medial put lateral skin flaps at risk.25 Use of the most recently healed or previous lateral-based scars has been recommended. In cases of adherent skin or poor soft-tissue envelope, plastic surgery (eg, soft-tissue expansion, gastrocnemius muscle, fasciocutaneous flaps) may be necessary.26-28Surgeons must decide to perform either a single operation or a multiple-stage operation. Naturally, most patients prefer a single procedure. All previous hardware can be removed, or only the hardware that is preventing insertion of the tibial base plate. Removing the least amount of hardware is advantageous in that surgical stripping and soft-tissue damage are reduced.
In this initial series, we successfully converted 3 tibial implants to TKAs (each as a single operation) by removing only screws in percutaneous or minimally invasive fashion—the prosthetic joint approach did not involve additional soft-tissue stripping. We did not specifically record the time needed for implant removal separately from the time needed for TKA. As the Table shows, this technique can lengthen surgery. Operative time and blood loss can be more variable because of numerous factors, including scar tissue and an altered surgical field from previous surgery, in addition to hardware removal difficulties. Therefore, surgeons should budget more operative time for these procedures. Although longer operations theoretically may increase infection rates, we think the risk is mitigated by the percutaneous aspects of the described technique.
We do not think that most orthopedic surgeons addressing retained plate–screw constructs consider minimally invasive screw removal and plate retention. To our knowledge, the literature includes only 1 case report of a similar technique.29This technique has many potential drawbacks, the foremost being use of intraoperative fluoroscopy. For more complex fractures, fluoroscopy time can be significant if the surgeon is committed to a true percutaneous approach (Table). In addition, use of a mobile fluoroscopy unit adds personnel to the operating theater, which potentially increases the infection rate. There may be cases in which tibial hardware interferes with tibial cuts, necessitating plate removal, but we did not encounter this in our series. This technique is potentially time-consuming. Operating room time can be expected to increase relative to wide exposures that allow quick access to existing implants. For this reason, some surgeons may decide to forgo this technique. Most modern proximal tibial fracture plates are contoured to fit well over the bone. However, some may still be prominent, and surgeons may choose to perform an open approach to remove them. Last, the clinical impact of plates retained without screws in the proximal tibia is not known. Theoretically, they may still act as a nidus for occult infection, and may act as a stress riser for peri-implant fracture. Therefore, for each patient, the surgeon must decide if the extra surgical time, fluoroscopy exposure, and plate retention are worthwhile.
In this 3-case series, screws were removed percutaneously over the proximal tibia. There were no neurovascular injuries in these cases, though there is potential for nerve and artery injuries with percutaneous screw removal, as in the anterolateral area of the distal third of the tibia.30,31 Thus, our technique may not be applicable in such cases. Most patients with plates and screws retained after proximal tibial surgery do not need to have the screws removed from the distal tibia. There also is the potential for saphenous nerve injury if a small medial or posteromedial incision is made. No such injury occurred in our small series.
Surgeons must consider many factors when deciding whether to proceed with TKA in the setting of existing tibial hardware. If staged reconstruction is not planned, consideration can be given to percutaneous screw removal without plate removal in an attempt to minimize further soft-tissue stripping. This has the theoretical advantage of decreasing wound complications. We have been pleased with our initial patient experience and continue to use this technique.
Am J Orthop. 2016;45(7):E481-E486. Copyright Frontline Medical Communications Inc. 2016. All rights reserved.
Technique
The patient is positioned on a radiolucent table, and a mobile fluoroscopy unit is available. A tourniquet is applied to the upper thigh but typically is not inflated during the percutaneous hardware removal portion of the operation. It is crucial to have information on retained implants so the correct screwdrivers for screw removal can be selected. In addition, provisions for stripped screws should be made. In each of the 3 cases we managed, the Synthes Screw Removal Set was available. Presence of an implant system known to have problems with cold welding of screws (eg, Less Invasive Stabilization System; Synthes) may necessitate additional preparations, such as making conical extraction devices available.1
After preoperative administration of antibiotics, the surgeon typically removes only those proximal tibia screws that are preventing insertion of the tibial base plate. Fluoroscopic guidance is used to locate these screws and then remove them with percutaneous stab incisions. (Retained plates are not removed.) The exact method of localizing and removing the screws percutaneously is crucial. A small stab incision is made in the dermal layer. The number of stab incisions to be made depends on the number of screws to be removed. One small incision is needed for each screw hole. Occasionally mobilizing the skin and redirecting the screwdriver in the deep tissues can allow 2 screws to be removed through a single skin wound. The screwdriver head can be inserted through the muscle and fascial layers without the need for deep dissection. The plate is then felt with the screwdriver and the screw head located. It is very important that the screw head be adequately engaged to prevent stripping. The surgeon should not rush this step. The C-arm can be helpful here. Fluoroscopy not only can guide the screwdriver to the screw hole but can confirm the screwdriver is at right angles to the plate, not oblique. Only when the surgeon is completely satisfied that the screw head is well engaged should the attempt to back out the screw be made. If the screw strips, the screwdriver can be removed, and an attempt can be made to insert a percutaneous stripped screw removal device.1 If this fails, then the technique must be abandoned for a more traditional approach.
Plating complex tibial plateau fractures through a separate posteromedial approach is now popular.2 The deep location and screw orientation of posteromedial hardware make percutaneous removal unfeasible. In these cases, a separate posteromedial incision may be needed—usually posterior enough so it minimally compromises the anterior soft tissues. The incision typically uses the old posteromedial surgical scar but may not need to be as large as the original approach, as only selected screws need be removed. The saphenous neurovascular bundle may still be at risk, depending on the location of these incisions. The plate is not removed.
After the necessary screws are removed, the tourniquet can be inflated, if desired. The total knee arthroplasty (TKA) then proceeds in usual fashion through a single incision and a medial parapatellar arthrotomy.
Results
Between January 2009 and February 2014, Dr. Georgiadis converted 3 cases of retained tibial hardware and severe knee arthrosis to a TKA in a single operation. These cases were reviewed after Institutional Review Board approval was obtained. One patient underwent a closing-wedge high tibial osteotomy 14 years earlier, and the other 2 sustained tibial plateau fractures. Clinical details of the 3 cases are presented in the Table.
In 2 of the cases, anterolateral surgical scars were present. New, separate percutaneous stab incisions were used to remove screws, which meant less of the original skin incision could be used for the TKA (Figures 1A, 1B).
In the third case, involving multiple plates, a similar strategy was used, but an additional small posteromedial incision was required (Figures 2-5). The TKA then proceeded through a new midline incision. This case was performed for tibiofemoral arthrosis in the setting of an acute distal femur fracture, but this had no bearing on the technique.
Tibial base plates were inserted in the usual manner. Length and type of tibial stem were left to the discretion of the surgeon. There were no changes from the usual surgical technique. All patients went on to routine, uneventful wound healing. Follow-up ranged from 10 months to 59 months.
Discussion
If the decision is made to proceed with TKA after previous knee surgery, careful preoperative planning is needed.
For young patients with knee arthrosis and angular deformity, it has been recommended that proximal tibial osteotomy be performed to delay the need for joint replacement.3,4 Although a wide variety of osteotomy techniques is available, plates and screws are often used. With long-term follow-up, knee arthrosis can be expected to progress, and some of these cases will be converted to knee arthroplasty.3,4Displaced tibial plateau fractures are intra-articular injuries. Treatment requires surgery.
Blood work for inflammatory markers (erythrocyte sedimentation rate, C-reactive protein level) should be performed before surgery. In the event of an elevated laboratory value or clinical suspicion (joint effusion), the joint should be aspirated before any arthroplasty procedure.
Preoperative planning for hardware removal is essential.22 The correct screwdriver and a metal cutting burr (for stripped screws) should be available. These needs may be anticipated with certain types of locking plates.1
Surgical incision planning is also crucial in preventing wound problems that can lead to deep prosthetic infection.23,24 Blood supply to the skin of the anterior knee is primarily medially derived; incisions that are more medial put lateral skin flaps at risk.25 Use of the most recently healed or previous lateral-based scars has been recommended. In cases of adherent skin or poor soft-tissue envelope, plastic surgery (eg, soft-tissue expansion, gastrocnemius muscle, fasciocutaneous flaps) may be necessary.26-28Surgeons must decide to perform either a single operation or a multiple-stage operation. Naturally, most patients prefer a single procedure. All previous hardware can be removed, or only the hardware that is preventing insertion of the tibial base plate. Removing the least amount of hardware is advantageous in that surgical stripping and soft-tissue damage are reduced.
In this initial series, we successfully converted 3 tibial implants to TKAs (each as a single operation) by removing only screws in percutaneous or minimally invasive fashion—the prosthetic joint approach did not involve additional soft-tissue stripping. We did not specifically record the time needed for implant removal separately from the time needed for TKA. As the Table shows, this technique can lengthen surgery. Operative time and blood loss can be more variable because of numerous factors, including scar tissue and an altered surgical field from previous surgery, in addition to hardware removal difficulties. Therefore, surgeons should budget more operative time for these procedures. Although longer operations theoretically may increase infection rates, we think the risk is mitigated by the percutaneous aspects of the described technique.
We do not think that most orthopedic surgeons addressing retained plate–screw constructs consider minimally invasive screw removal and plate retention. To our knowledge, the literature includes only 1 case report of a similar technique.29This technique has many potential drawbacks, the foremost being use of intraoperative fluoroscopy. For more complex fractures, fluoroscopy time can be significant if the surgeon is committed to a true percutaneous approach (Table). In addition, use of a mobile fluoroscopy unit adds personnel to the operating theater, which potentially increases the infection rate. There may be cases in which tibial hardware interferes with tibial cuts, necessitating plate removal, but we did not encounter this in our series. This technique is potentially time-consuming. Operating room time can be expected to increase relative to wide exposures that allow quick access to existing implants. For this reason, some surgeons may decide to forgo this technique. Most modern proximal tibial fracture plates are contoured to fit well over the bone. However, some may still be prominent, and surgeons may choose to perform an open approach to remove them. Last, the clinical impact of plates retained without screws in the proximal tibia is not known. Theoretically, they may still act as a nidus for occult infection, and may act as a stress riser for peri-implant fracture. Therefore, for each patient, the surgeon must decide if the extra surgical time, fluoroscopy exposure, and plate retention are worthwhile.
In this 3-case series, screws were removed percutaneously over the proximal tibia. There were no neurovascular injuries in these cases, though there is potential for nerve and artery injuries with percutaneous screw removal, as in the anterolateral area of the distal third of the tibia.30,31 Thus, our technique may not be applicable in such cases. Most patients with plates and screws retained after proximal tibial surgery do not need to have the screws removed from the distal tibia. There also is the potential for saphenous nerve injury if a small medial or posteromedial incision is made. No such injury occurred in our small series.
Surgeons must consider many factors when deciding whether to proceed with TKA in the setting of existing tibial hardware. If staged reconstruction is not planned, consideration can be given to percutaneous screw removal without plate removal in an attempt to minimize further soft-tissue stripping. This has the theoretical advantage of decreasing wound complications. We have been pleased with our initial patient experience and continue to use this technique.
Am J Orthop. 2016;45(7):E481-E486. Copyright Frontline Medical Communications Inc. 2016. All rights reserved.
1. Georgiadis GM, Gove NK, Smith AD, Rodway IP. Removal of the Less Invasive Stabilization System. J Orthop Trauma. 2004;18(8):562-564.
2. Georgiadis GM. Combined anterior and posterior approaches for complex tibial plateau fractures. J Bone Joint Surg Br. 1994;76(2):285-289.
3. Insall JN, Joseph DM, Msika C. High tibial osteotomy for varus gonarthrosis. A long-term follow-up study. J Bone Joint Surg Am. 1984;66(7):1040-1048.
4. Sprenger TR, Doerzbacher JF. Tibial osteotomy for the treatment of varus gonarthrosis. Survival and failure analysis to twenty-two years. J Bone Joint Surg Am. 2003;85(3):469-474.
5. Moore TM, Patzakis MJ, Harvey JP. Tibial plateau fractures: definition, demographics, treatment rationale, and long-term results of closed traction management or operative reduction. J Orthop Trauma. 1987;1(2):97-119.
6. Shah SN, Karunakar MA. Early wound complications after operative treatment of high energy tibial plateau fractures through two incisions. Bull NYU Hosp Joint Dis. 2007;65(2):115-119.
7. Yang EC, Weiner L, Strauss E, Sedin E, Kelley M, Raphael J. Metaphyseal dissociation fractures of the proximal tibia. An analysis of treatment and complications. Am J Orthop. 1995;24(9):695-704.
8. Young MJ, Barrack RL. Complications of internal fixation of tibial plateau fractures. Orthop Rev. 1994;23(2):149-154.
9. Luo CF, Sun H, Zhang B, Zeng BF. Three-column fixation for complex tibial plateau fractures. J Orthop Trauma. 2010;24(11):683-692.
10. Barei DP, Nork SE, Mills WJ, Henley MB, Benirschke SK. Complications associated with internal fixation of high-energy bicondylar tibial plateau fractures utilizing a two-incision technique. J Orthop Trauma. 2004;18(10):649-657.
11. Ruffolo MR, Gettys FK, Montijo HE, Seymour RB, Karunakar MA. Complications of high-energy bicondylar tibial plateau fractures treated with dual plating through 2 incisions. J Orthop Trauma. 2015;29(2):85-90.
12. Honkonen SE. Degenerative arthritis after tibial plateau fractures. J Orthop Trauma. 1995;9(4):273-277.
13. Volpin G, Dowd GS, Stein H, Bentley G. Degenerative arthritis after intra-articular fractures of the knee. Long-term results. J Bone Joint Surg Br. 1990;72(4):634-638.
14. Mehin R, O’Brien P, Broekhuyse H, Blachut P, Guy P. Endstage arthritis following tibia plateau fractures: average 10-year follow-up. Can J Surg. 2012;55(2):87-94.
15. Wasserstein D, Henry P, Paterson JM, Kreder HJ, Jenkinson R. Risk of total knee arthroplasty after operatively treated tibial plateau fracture: a matched-population-based cohort study. J Bone Joint Surg Am. 2014;96(2):144-150.
16. Meding JB, Keating EM, Ritter MA, Faris PM. Total knee arthroplasty after high tibial osteotomy. A comparison study in patients who had bilateral total knee replacement. J Bone Joint Surg Am. 2000;82(9):1252-1259.
17. Parvizi J, Hanssen AD, Spangheli MJ. Total knee arthroplasty following proximal tibial osteotomy: risk factors for failure. J Bone Joint Surg Am. 2004;86(3):474-479.
18. Windsor RE, Insall JN, Vince KG. Technical considerations of total knee arthroplasty after proximal tibial osteotomy. J Bone Joint Surg Am. 1988;70(4):547-555.
19. Civinini R, Carulli C, Matassi F, Villano M, Innocenti M. Total knee arthroplasty after complex tibial plateau fractures. Chir Organi Mov. 2009;93(3):143-147.
20. Saleh KJ, Sherman P, Katkin P, et al. Total knee arthroplasty after open reduction and internal fixation of fractures of the tibial plateau: a minimum five-year follow-up study. J Bone Joint Surg Am. 2001;83(8):1144-1148.
21. Weiss NG, Parvizi J, Trousdale RT, Bryce RD, Lewallen DG. Total knee arthroplasty in patients with a prior fracture of the tibial plateau. J Bone Joint Surg Am. 2003;85(2):218-221.
22. Hak DJ, McElvany M. Removal of broken hardware. J Am Acad Orthop Surg. 2008:16(2):113-120.
23. Della Valle CJ, Berger RA, Rosenberg AG. Surgical exposures in revision total knee arthroplasty. Clin Orthop Relat Res. 2006;(446):59-68.
24. Vince KG, Abdeen A. Wound problems in total knee arthroplasty. Clin Orthop Relat Res. 2006;(452):88-90.
25. Colombel M, Mariz Y, Dahhan P, Kénési C. Arterial and lymphatic supply of the knee integuments. Surg Radiol Anat. 1998;20(1):35-40.
26. Namba RS, Diao E. Tissue expansion for staged reimplantation of infected total knee arthroplasty. J Arthroplasty. 1997;12(4):471-474.
27. Markovich GD, Dorr LD, Klein NE, McPherson EJ, Vince KG. Muscle flaps in total knee arthroplasty. Clin Orthop Relat Res. 1995;(321):122-130.
28. Hallock GG. Salvage of total knee arthroplasty with local fasciocutaneous flaps. J Bone Joint Surg Am. 1990;72(8):1236-1239.
29. Roswell M, Gale D. Total knee arthroplasty following internal fixation of a lateral tibial plateau fracture. Injury Extra. 2005;36(8):352-354.
30. Deangelis JP, Deangelis NA, Anderson R. Anatomy of the superficial peroneal nerve in relation to fixation of tibia fractures with the Less Invasive Stabilization System. J Orthop Trauma. 2004;18(8):536-539.
31. Pichler W, Grechenig W, Tesch NP, Weinberg AM, Heidari N, Clement H. The risk of iatrogenic injury to the deep peroneal nerve in minimally invasive osteosynthesis of the tibia with the Less Invasive Stabilisation System: a cadaver study. J Bone Joint Surg Br. 2009;91(3):385-387.
1. Georgiadis GM, Gove NK, Smith AD, Rodway IP. Removal of the Less Invasive Stabilization System. J Orthop Trauma. 2004;18(8):562-564.
2. Georgiadis GM. Combined anterior and posterior approaches for complex tibial plateau fractures. J Bone Joint Surg Br. 1994;76(2):285-289.
3. Insall JN, Joseph DM, Msika C. High tibial osteotomy for varus gonarthrosis. A long-term follow-up study. J Bone Joint Surg Am. 1984;66(7):1040-1048.
4. Sprenger TR, Doerzbacher JF. Tibial osteotomy for the treatment of varus gonarthrosis. Survival and failure analysis to twenty-two years. J Bone Joint Surg Am. 2003;85(3):469-474.
5. Moore TM, Patzakis MJ, Harvey JP. Tibial plateau fractures: definition, demographics, treatment rationale, and long-term results of closed traction management or operative reduction. J Orthop Trauma. 1987;1(2):97-119.
6. Shah SN, Karunakar MA. Early wound complications after operative treatment of high energy tibial plateau fractures through two incisions. Bull NYU Hosp Joint Dis. 2007;65(2):115-119.
7. Yang EC, Weiner L, Strauss E, Sedin E, Kelley M, Raphael J. Metaphyseal dissociation fractures of the proximal tibia. An analysis of treatment and complications. Am J Orthop. 1995;24(9):695-704.
8. Young MJ, Barrack RL. Complications of internal fixation of tibial plateau fractures. Orthop Rev. 1994;23(2):149-154.
9. Luo CF, Sun H, Zhang B, Zeng BF. Three-column fixation for complex tibial plateau fractures. J Orthop Trauma. 2010;24(11):683-692.
10. Barei DP, Nork SE, Mills WJ, Henley MB, Benirschke SK. Complications associated with internal fixation of high-energy bicondylar tibial plateau fractures utilizing a two-incision technique. J Orthop Trauma. 2004;18(10):649-657.
11. Ruffolo MR, Gettys FK, Montijo HE, Seymour RB, Karunakar MA. Complications of high-energy bicondylar tibial plateau fractures treated with dual plating through 2 incisions. J Orthop Trauma. 2015;29(2):85-90.
12. Honkonen SE. Degenerative arthritis after tibial plateau fractures. J Orthop Trauma. 1995;9(4):273-277.
13. Volpin G, Dowd GS, Stein H, Bentley G. Degenerative arthritis after intra-articular fractures of the knee. Long-term results. J Bone Joint Surg Br. 1990;72(4):634-638.
14. Mehin R, O’Brien P, Broekhuyse H, Blachut P, Guy P. Endstage arthritis following tibia plateau fractures: average 10-year follow-up. Can J Surg. 2012;55(2):87-94.
15. Wasserstein D, Henry P, Paterson JM, Kreder HJ, Jenkinson R. Risk of total knee arthroplasty after operatively treated tibial plateau fracture: a matched-population-based cohort study. J Bone Joint Surg Am. 2014;96(2):144-150.
16. Meding JB, Keating EM, Ritter MA, Faris PM. Total knee arthroplasty after high tibial osteotomy. A comparison study in patients who had bilateral total knee replacement. J Bone Joint Surg Am. 2000;82(9):1252-1259.
17. Parvizi J, Hanssen AD, Spangheli MJ. Total knee arthroplasty following proximal tibial osteotomy: risk factors for failure. J Bone Joint Surg Am. 2004;86(3):474-479.
18. Windsor RE, Insall JN, Vince KG. Technical considerations of total knee arthroplasty after proximal tibial osteotomy. J Bone Joint Surg Am. 1988;70(4):547-555.
19. Civinini R, Carulli C, Matassi F, Villano M, Innocenti M. Total knee arthroplasty after complex tibial plateau fractures. Chir Organi Mov. 2009;93(3):143-147.
20. Saleh KJ, Sherman P, Katkin P, et al. Total knee arthroplasty after open reduction and internal fixation of fractures of the tibial plateau: a minimum five-year follow-up study. J Bone Joint Surg Am. 2001;83(8):1144-1148.
21. Weiss NG, Parvizi J, Trousdale RT, Bryce RD, Lewallen DG. Total knee arthroplasty in patients with a prior fracture of the tibial plateau. J Bone Joint Surg Am. 2003;85(2):218-221.
22. Hak DJ, McElvany M. Removal of broken hardware. J Am Acad Orthop Surg. 2008:16(2):113-120.
23. Della Valle CJ, Berger RA, Rosenberg AG. Surgical exposures in revision total knee arthroplasty. Clin Orthop Relat Res. 2006;(446):59-68.
24. Vince KG, Abdeen A. Wound problems in total knee arthroplasty. Clin Orthop Relat Res. 2006;(452):88-90.
25. Colombel M, Mariz Y, Dahhan P, Kénési C. Arterial and lymphatic supply of the knee integuments. Surg Radiol Anat. 1998;20(1):35-40.
26. Namba RS, Diao E. Tissue expansion for staged reimplantation of infected total knee arthroplasty. J Arthroplasty. 1997;12(4):471-474.
27. Markovich GD, Dorr LD, Klein NE, McPherson EJ, Vince KG. Muscle flaps in total knee arthroplasty. Clin Orthop Relat Res. 1995;(321):122-130.
28. Hallock GG. Salvage of total knee arthroplasty with local fasciocutaneous flaps. J Bone Joint Surg Am. 1990;72(8):1236-1239.
29. Roswell M, Gale D. Total knee arthroplasty following internal fixation of a lateral tibial plateau fracture. Injury Extra. 2005;36(8):352-354.
30. Deangelis JP, Deangelis NA, Anderson R. Anatomy of the superficial peroneal nerve in relation to fixation of tibia fractures with the Less Invasive Stabilization System. J Orthop Trauma. 2004;18(8):536-539.
31. Pichler W, Grechenig W, Tesch NP, Weinberg AM, Heidari N, Clement H. The risk of iatrogenic injury to the deep peroneal nerve in minimally invasive osteosynthesis of the tibia with the Less Invasive Stabilisation System: a cadaver study. J Bone Joint Surg Br. 2009;91(3):385-387.
