How can synovial tissue be obtained?
| Method | Size of Hole |
|---|---|
| Closed-needle biopsy +/– ultrasound (Parker Pearson or Tru-Cut needle) | 14-gauge needle (2.1 mm) |
| Ultrasound-guided forceps biopsy | 2.1 mm |
| Needle arthroscopy +/– ultrasound | 1.9, 2.7, 4.5 mm |
| Arthroscopy | 4 to 5 mm |
| Open surgical biopsy | Several inches |
