Table 1.
Details of cases performed under computer-assisted navigation
| Navigation procedure | Patient number | Age (years) | Gender | Diagnosis | Region | Operation | Planned margin (mm) | Achieved margin (mm) | Followup (months) | Oncologic outcome |
|---|---|---|---|---|---|---|---|---|---|---|
| Group 1* | ||||||||||
| 1 | 1 | 30 | Female | Clear cell chondrosarcoma | Femoral head and neck | Excision + endoprosthesis | 10 | 8 | 21 | DF |
| 2 | 2 | 54 | Female | Chondrosarcoma | Pelvis (ischium) | Joint-sparing excision | 10 | 20 | 21 | DF |
| 3 | 3 | 10 | Female | Osteosarcoma | Distal Femur | Excision + custom growing prosthesis | 30 | 20 | 6 | Died as a result of metastasis |
| 4 | Tibial plateau | 5 | 13 | |||||||
| 5 | 4 | 47 | Male | Malignant giant cell tumor | Tibia | Excision + endoprosthesis | 30 | 35 | 21 | Alive with metastasis |
| 6 | 5 | 32 | Male | Giant cell tumor | Radius | Excision + fibular graft | 20 | 14 | 20 | DF |
| 7 | 6 | 33 | Female | Chondrosarcoma | Humerus | Excision + allograft-prosthesis composite | 20 | 23 | 19 | Soft tissue recurrence, died as a result of metastasis |
| 8 | 7 | 46 | Female | Adamantinoma | Tibia | Excision + custom segmental implant | 8 | 15 | 18 | DF |
| 9 | 30 | 20 | ||||||||
| 10 | 8 | 15 | Male | Osteosarcoma | Distal Femur | Excision + endoprosthesis | 30 | 20 | 18 | DF |
| Group 2† | ||||||||||
| 1 | 9 | 12 | Male | Osteosarcoma | Distal femur | Excision + custom segmental implant | 15 | 16 | 14 | DF |
| 2 | 10 | 53 | Male | Chondrosarcoma | Pelvis (pubis) | Excision | 10 (left side) | 17 | 14 | DF |
| 3 | 6 (right side) | 7 | ||||||||
| 4 | 11 | 13 | Female | Osteosarcoma | Fibula | Excision | 37 | 37 | 10 | DF |
| 5 | 12 | 24 | Male | Osteosarcoma | Distal femur | Excision + endoprosthesis | 45 | 50 | 9 | DF |
* Group 1 = registration using paired points and surface matching; †Group 2 = registration using fluoro-CT matching; DF = disease-free.