Table 7 Association between limitation of ROM “external-rotation” according to MRI finding (n = 70)
MRI finding | Limitation of ROM (External rotation) | Test value | p-value | |
|---|---|---|---|---|
Absent (n = 19) | Present (n = 51) | |||
Qualitative findings | ||||
Capsular edema | ||||
Glenoid | ||||
Absent | 6 (31.6%) | 37 (72.5%) | x2: 9.807 | 0.002* |
Present | 13 (68.4%) | 14 (27.5%) | ||
Humeral | ||||
Absent | 6 (31.6%) | 33 (64.7%) | x2: 6.157 | 0.013* |
Present | 13 (68.4%) | 18 (35.3%) | ||
Extra capsular edema | ||||
Anterior | ||||
Absent | 6 (31.6%) | 39 (76.5%) | x2: 12.151 | < 0.001** |
Present | 13 (68.4%) | 12 (23.5%) | ||
Posterior | ||||
Absent | 8 (42.1%) | 41 (80.4%) | x2: 9.663 | 0.002* |
Present | 11 (57.9%) | 10 (19.6%) | ||
Obliteration of subcoracoid fat triangle | ||||
Absent | 12 (63.2%) | 23 (45.1%) | x2: 3.271 | 0.195 |
Partial obliteration | 0 (0.0%) | 6 (11.8%) | ||
Complete obliteration | 7 (36.8%) | 22 (43.1%) | ||
Effusion of biceps tendon sheath | ||||
Absent | 7 (36.8%) | 15 (29.4%) | x2: 0.355 | 0.552 |
Present | 12 (63.2%) | 36 (70.6%) | ||
Quantitative findings | ||||
Capsular thickening | ||||
Glenoid (mm) | ||||
Mean ± SD | 6.33 ± 1.15 | 5.67 ± 1.29 | t: 1.770 | 0.060 |
Range | 4–8 | 2.87–7.7 | ||
Humeral (mm) | ||||
Mean ± SD | 5.33 ± 1.91 | 5.03 ± 1.75 | t: 0.400 | 0.530 |
Range | 3.2–8.8 | 1.5–9.03 | ||
Axillary recess | ||||
Height (mm) | ||||
Mean ± SD | 7.05 ± 3.15 | 6.64 ± 2.27 | t: 0.370 | 0.550 |
Range | 3.49–11.6 | 3.2–13.5 | ||
Width (mm) | ||||
Mean ± SD | 2.64 ± 1.50 | 2.43 ± 1.37 | t: 0.290 | 0.590 |
Range | 1–5.5 | 0.9–6.8 | ||