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Causes of sciatic nerve entrapment under arthroscopy
| Compromising structure | Number |
|---|---|
| Fibrous and fibrovascular bands | 15 |
| Piriformis muscle hypertrophy | 8 |
| Synovial hyperplasia | 2 |
| Osteophyte formation | 2 |
| Dynamic stimulation of the gemellus muscle-internal obturator complex | 2 |
| No definite lesion | 1 |
| Total | 30 |
