Table 2.
Comparison of Imaging and Intraoperative Findings Between Shoulder Instability Patients Either With or Without Comorbid Back Paina
| No Back Pain | Back Pain | P | |
|---|---|---|---|
| Radiographic findings | |||
| Humeral deficiency | 181 (21.5) | 28 (17.7) | .29 |
| Glenoid deficiency | 98 (11.6) | 16 (10.1) | .59 |
| MRI, CT findings | |||
| Anterior humeral bone loss | 24 (2.8) | 6 (3.8) | .46 |
| Posterior humeral bone loss | 365 (43.3) | 59 (37.3) | .16 |
| Anterior glenoid bone loss | 809 (96.0) | 149 (94.3) | .39 |
| Posterior glenoid bone loss | 13 (1.5) | 1 (0.6) | .71 |
| Anterior labral tear | 535/840 (63.7) | 89/157 (56.7) | .10 |
| SLAP tear | 123/840 (14.6) | 31/157 (19.7) | .10 |
| Intraoperative findings | |||
| Normal anterior capsule/labrum | 549 (65.1) | 96 (60.8) | .12 |
| Normal inferior capsule/labrum | 676 (80.2) | 116 (73.4) | .32 |
| Normal posterior capsule/labrum | 725 (86.0) | 138 (87.3) | .23 |
aValues are expressed as n (%). Total sample size was different for anterior labral tear and SLAP tear due to missing information during data collection. CT, computed tomography; MRI, magnetic resonance imaging; SLAP, superior labrum anterior-posterior.