| Characteristics | ER | MR | LR | P value |
|---|
| No. of patients | 31 | 78 | 24 | |
| Extension, ° | 36 ± 17 | 39 ± 19 | 42 ± 19 | .430 |
| Flexion, ° | 76 ± 23 | 80 ± 21 | 81 ± 23 | .602 |
| ROM, ° | 40 ± 27 | 41 ± 26 | 39 ± 30 | .957 |
| MEPS, points | 66 ± 15 | 70 ± 12 | 67 ± 11 | .342 |
| Excellent, n | 2 (6) | 6 (8) | 1 (4) | .297 |
| Good, n | 9 (29) | 29 (37) | 5 (21) |
| Fair, n | 15 (48) | 34 (44) | 15 (63) |
| Poor, n | 5 (16) | 9 (12) | 3 (13) |
| Pain VAS, points | 1.7 ± 2.0 | 1.5 ± 1.9 | 1.6 ± 2.1 | .870 |
| Ulnar nerve symptoms (Dellon classification) | | | | .541 |
| None, n | 21 (68) | 60 (77) | 19 (79) |
| Grade I, n | 6 (19) | 10 (13) | 4 (17) |
| Grade II, n | 4 (13) | 5 (6) | 1 (4) |
| Grade III, n | 0 (0) | 3 (4) | 0 (0) |
| HO (Hastings and Graham classification) | | | | .849 |
| None, n | 8 (26) | 17 (22) | 6 (25) |
| Grade IIA, n | 14 (45) | 34 (44) | 9 (38) |
| Grade IIC, n | 4 (13) | 14 (18) | 4 (17) |
| Grade III, n | 5 (16) | 13 (17) | 5 (21) |
- ER early release group, MR median release group, LR late release group, ROM range of motion, MEPS Mayo Elbow Performance Score, VAS visual analog scale
- Categorical variables are presented as number (%)
- Continuous variables are presented as mean ± standard deviation
