|
| | Case 1 | Case 2 | Case 3 | Case 4 |
|
| Patient characteristics |
| Age (years) | 10 | 7.4 | 9.3 | 16.2 |
| Sex | F | F | F | F |
| Sarcoma type | EWS | EWS | Telangiectasic OS | EWS |
| Sarcoma localization | Ulna | Radius | Radius | Ulna |
| Metastasis | Lung metastases | No | 2 skip metastases in the radius | No |
|
| Surgical characteristics |
| Resection length (cm) | 15.3 | 15.7 | 14.2 | 15.0 |
| Resection type | Diaphyseal | Diaphyseal and proximal epiphysis | Diaphyseal and distal epiphysis | Diaphyseal |
| Preservation | Proximal and distal physes and epiphyses | Distal physis and epiphysis | Proximal physis and epiphysis | Proximal and distal epiphyses |
| Allograft reconstruction type | Intercalary allograft | Osteochondral allograft | Osteochondral allograft | Intercalary allograft |
| Operative time (minutes) | 160 | 244 | 196 | 105 |
|
| Resection margin evaluation |
| Bone | R0 | R0 | R0 | R0 |
| Soft tissue | R0 | R1 (in the soft tissue of the proximal section) needing adjuvant radiotherapy | R0 | R0 |
|
| Complications and additional surgeries |
| Local complication | Skin necrosis needing scar revision (at 2 postoperative months) | -Skin necrosis needing scar revision (at 2 postoperative weeks) | None | Pseudarthrosis at proximal allograft-host junction needing autologous bone graft (at 13 postoperative months) |
| -Allograft fracture needing plate osteosynthesis at 25 postoperative months) |
| -Allograft fracture needing allograft replacement at 40 postoperative months) |
| Local recurrence | — | — | — | Local recurrence in the soft tissue (nodule in the flexor carpi ulnaris) needing nodule resection (at 22 postoperative months) |
|
| Final result |
| Follow-up | 2 years and 6 months | 6 years | 5 years and 11 months | 9 years and 6 months |
| Final status of the patient | Alive and free of disease | Alive and free of disease | Alive and free of disease | Alive and free of disease |
| Allograft-host junction status | Healed | Healed | Healed | Healed |
| MSTS functional score | 30/30 | 23/30 | 30/30 | 30/30 |
| Final functional result | Excellent | Satisfactory | Excellent | Excellent |
|
