Open Access
Table 1
Patient characteristics.
| Case | Age (years) | Sex | Histology | Biopsy method | Tumor size (cm) | Pathologic fracture | Approach | Knee joint | Bone resection length (cm), percentage of total femoral length | Resected muscle | Defect size (cm) | Implant coverage percentage |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 15 | Female | Conventional osteosarcoma | Open | 7×6×10 | No | Lateral | Extra-articular resection | 15, 38% | Vastus medialis, lateralis, intermedius | 14×6 | 100% |
| 2 | 74 | Male | Atypical cartilaginous tumor → Dedifferentiated chondrosarcoma | Unplanned surgery (curettage and plate fixation) | 4×3×11 | Yes | Lateral | Extra-articular resection | 29, 63% | Vastus medialis, lateralis, intermedius, iliotibial tract | 14×6 | 80% |
| 3 | 58 | Female | Local recurrence of conventional osteosarcoma in the vastus lateralis | Needle | 4×4.5×8.5 | No | Lateral | Extra-articular resection (initial surgery) | 14, 35% (initial surgery) | Vastus lateralis, iliotibial tract | 11×6 | 100% |
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