Table 2.
Comparison of the results of BIO-RSA with those of Grammont (medialized) RSA
| Parameter | Grammont RSA (medialized) (Molé and Favard [24]) | BIO-RSA (lateralized) (Boileau et al.) |
|---|---|---|
| Number of cases | 484 | 42 |
| Etiology | CTA, MRCT | CTA, MRCT, FS |
| Followup (months) | 52 | 38 |
| Constant-Murley (points) | 62 | 66 |
| Active anterior elevation (°) | 130 | 146 |
| Active external rotation (°) | 13 | 23 |
| External rotation in abduction (°) | 42 | 53 |
| Active internal rotation > S1 (%) | 26 | 86 |
| Scapular notching (%) | 68 | 19 |
| Prosthetic instability (%) | 3.4 | 0 |
| Glenoid loosening (%) | 3.6 | 0 |
BIO-RSA = bony increased-offset reversed shoulder arthroplasty; RSA = reverse shoulder arthroplasty; CTA = cuff tear arthritis; MRCT = massive rotator cuff tear; FS = fracture sequelae.