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• W2465740983 abstract "Introduction: The use of allograft prosthetic composite (APC) of the proximal tibia offers advantages over prosthetic replacement or osteoarticular graft with a better functional outcome since the possibility of a careful soft tissue reconstruction; Materials and Methods: From 1994 to 2002, 62 APC of the proximal tibia were performed in our department after bone tumor resection (56 malignant bone tumors, 4 cases of previously failed knee implant and 2 stage 3 benign tumors). The patients median age was 18 yrs (range: 11–77 yrs) and the mean resected length was 13.2 cm (range: 8.5–28 cm). The median follow up was 59 months (range: 13–137 months) Results: In three patients (4,8%) a recurrence was reported at 22, 33 an 40 months and amputation was performed. Infection was reported in 15 patients (24.2%): 2 early infections (healed with surgical debridment), 1 femoral stem septic loosening (treated with early revision with cemented stem); in 8 cases removal of the infected APC was required followed by implant of a new prosthetic device after cement spacer; two infections did not healed and patient underwent amputation; in two cases a good functional result was achieved removing the infected graft and covering the proximal tibia with cement and no other surgery was required. Non union of the graft was observed in 8 patients (12.9%): in 4 patients autologous bone grafting was necessary to heal the osteotomy line. In other 3 cases non union was associated with graft fracture. In one case non union was associated with tibial stem loosening and revision of the whole implant was done. Polyethylene wear was assessed in 5 patients (8%) and revision of the polyethylene components was always required. Nine patellar tendon rupture (14.5%) were assessed and repaired was performed in seven cases. The functional outcome of 42 patients with more than two years of follow up was excellent in 25 cases, good in 13, fair in 2 and poor in 2. Discussion: APC of the proximal tibia is an effective alternative to osteoarticular graft and modular prosthesis because it allows good to excellent results in most of the patients (90.4%). The major concern is infection rate (24.2%) that usually lead to amputation (80%). Non union does not usually represent a problem because it’s tendency to spontaneous or bone grafting induced healing. Aseptic loosening of the tibial or femoral stem is rare. Patellar tendon rupture rate (14.5%) is similar to modular prosthetis rate and can be lowered using a femoral component with patellar groove." @default.
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• W2465740983 date "2009-03-01" @default.
• W2465740983 modified "2023-09-28" @default.
• W2465740983 title "ALLOGRAFT PROSTHETIC COMPOSITE FOLLOWING BONE TUMOR RESECTION OF THE PROXIMAL TIBIA" @default.
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