Clinical Study
Comparison between Constrained and Semiconstrained Knee Allograft-Prosthesis Composite Reconstructions
Table 1
Differences between groups of APC knee replacements.
| | Group 1 (nonconstrained APC) | Group 2 (constrained APC) |
| Number | 50 patients | 36 patients | Diagnostic () | Revision, osteoarticular allograft (20) Revision, knee prosthesis (6) Osteogenic sarcoma (8) Chondrosarcoma (7) Leiomyosarcoma (2) Fibrosarcoma (2) Giant cell tumor (2) Desmoplastic fibroma (1) Traumatic bone loss (2) | Revision, tumor endoprosthesis (14) Osteogenic sarcoma (11) Revision, osteoarticular allograft (3) Chondrosarcoma (3) Lymphoma (2) Soft tissue sarcoma (1) Malignant fibrohistiocytoma (1) Giant cell tumor (1) | Followup | 69 months (range, 8–141 months) | 75 months (range, 7–197 months) | Age | 35 years old (range, 15–80) | 35 years old (range, 8–84) | Sex | 22 females; 28 males | 18 females; 18 males | Location () | Distal femur (28) Proximal tibia (22) | Distal femur (17) Proximal tibia (19) |
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