Table 3 Percentage of BP collateral origins (usual and variable presentation).
| BP collateral | Usual n (%) | Variation n (%) |
|---|---|---|
| Long thoracic | 18 (33.3) | 36 (66.6) |
| Suprascapular | 47 (82.5) | 10 (17.5) |
| Dorsal scapular | 27 (48.2) | 29 (51.8) |
| Upper subscapular | 19 (33.9) | 37 (66.1) |
| Thoracodorsal | 44 (78.6) | 12 (21.4) |
| Inferior subscapular | 18 (31.6) | 39 (68.4) |
| Accessory subscapular | 35 (61.4)* | 22 (38.6) |