Table III.
Analysis of tear characteristics and incidence of shoulder stiffness distributed by follow-up visit
| Risk factor | Time point 4 (12 weeks) |
Time point 5 (16-24 weeks) |
Time point 6 (52 weeks) |
||||||
|---|---|---|---|---|---|---|---|---|---|
| Stiff, n (%) | Not stiff, n (%) | P value | Stiff, n (%) | Not stiff, n (%) | P value | Stiff, n (%) | Not stiff, n (%) | P value | |
| Supraspinatus tear | |||||||||
| Full or partial tear | 8 (88.9) | 113 (96.6) | .31 | 3 (75.0) | 118 (96.7) | .15 | 2 (100.0) | 119 (96.0) | >.99 |
| No tear | 1 (11.1) | 4 (3.4) | 1 (25.0) | 4 (3.3) | 0 (0.0) | 5 (4.0) | |||
| Subscapularis tear | |||||||||
| Full or partial tear | 3 (33.3) | 40 (34.2) | >.99 | 1 (25.0) | 42 (34.4) | >.99 | 0 (0.0) | 43 (34.7) | .55 |
| No tear | 6 (66.7) | 77 (65.8) | 3 (75.0) | 80 (65.6) | 2 (100.0) | 81 (65.3) | |||
| Infraspinatus tear | |||||||||
| Full or partial tear | 2 (22.2) | 16 (13.7) | .62 | 1 (25.0) | 17 (13.9) | .46 | 1 (50.0) | 17 (13.7) | .27 |
| No tear | 7 (77.8) | 101 (86.3) | 3 (75.0) | 105 (86.1) | 1 (50.0) | 107 (86.3) | |||
| No. of tendons torn | |||||||||
| 3 | 1 (11.1) | 7 (6.0) | .50 | 0 (0.0) | 8 (6.6) | >.99 | 0 (0.0) | 8 (6.5) | >.99 |
| 2 | 2 (22.2) | 38 (32.5) | 1 (25.0) | 39 (32.0) | 1 (50.0) | 39 (31.5) | |||
| 1 | 6 (66.7) | 72 (61.5) | 3 (75.0) | 75 (61.5) | 1 (50.0) | 77 (62.1) | |||
| No. of full tears | |||||||||
| 3 | 1 (11.1) | 7 (6.0) | .74 | 0 (0.0) | 8 (6.6) | .72 | 0 (0.0) | 8 (6.5) | .44 |
| 2 | 1 (11.1) | 20 (17.1) | 1 (25.0) | 20 (16.4) | 1 (50.0) | 20 (16.1) | |||
| 1 | 5 (55.6) | 69 (59.0) | 2 (50.0) | 72 (59.0) | 1 (50.0) | 73 (58.9) | |||
| 0 | 2 (22.2) | 21 (18.0) | 1 (25.0) | 22 (18.0) | 0 (0.0) | 23 (18.6) | |||
| No. of partial tears | |||||||||
| 2 | 0 (0.0) | 4 (3.4) | .78 | 0 (0.0) | 4 (3.3) | >.99 | 0 (0.0) | 4 (3.2) | >.99 |
| 1 | 3 (33.3) | 31 (26.5) | 1 (25.0) | 33 (27.1) | 0 (0.0) | 34 (27.4) | |||
| 0 | 6 (66.7) | 82 (70.1) | 3 (75.0) | 85 (69.7) | 2 (100.0) | 86 (69.4) | |||
| Retraction | |||||||||
| Yes | 1 (11.1) | 10 (8.6) | .57 | 1 (25.0) | 10 (8.2) | .31 | 1 (50.0) | 10 (8.1) | .17 |
| No | 8 (88.9) | 107 (91.5) | 3 (75.0) | 112 (91.8) | 1 (50.0) | 114 (91.9) | |||
Stiffness was defined as total range of motion between passive forward flexion and abducted external rotation ≤ 220°.