Table 1.
Characteristics of the Study Patients Overall and by Study Group a
| Overall (N = 61) | Open Osteosuture (n = 32) | Arthroscopic Screw (n = 29) | Difference (95% CI) | Pb | |
|---|---|---|---|---|---|
| Age, y | 11.2 ± 2.6 | 10.9 ± 2.7 | 11.5 ± 2.3 | 0.6 (–0.7 to 1.9) | .371 |
| Follow-up, mo | 87.0 ± 47.1 | 101.4 ± 51.9 | 71.0 ± 35.6 | 30.4 (7.7 to 53.0) | .010 |
| Sex | |||||
| Female | 26 (42.6) | 14 (43.8) | 12 (41.4) | 2.4 (–22.2 to 26.5) | >.999 |
| Male | 35 (57.4) | 18 (56.2) | 17 (58.6) | ||
| Sport when injured | |||||
| Skiing | 35 (57.4) | 23 (71.9) | 12 (41.4) | 30.5 (5.5 to 52.1) | .013 |
| Bicycle/motorbike | 12 (19.7) | 7 (21.9) | 5 (17.2) | 4.7 (–16.3 to 24.9) | .548 |
| Ball games | 8 (13.1) | 2 (6.2) | 6 (20.7) | 14.4 (–3.0 to 33.4) | .079 |
| Other | 6 (9.8) | 0 (0) | 6 (20.7) | 20.7 (8.7 to 38.6) | .004 |
| Injury side | |||||
| Left | 33 (54.1) | 13 (40.6) | 15 (51.7) | 11.1 (–13.9 to 34.8) | .325 |
| Right | 28 (45.9) | 19 (59.4) | 14 (48.3) | ||
| TSA fracture grade c | |||||
| Type 1 | 1 (1.6) | 0 (0) | 1 (3.4) | 3.4 (–7.6 to 17.3) | .237 |
| Type 2 | 26 (42.6) | 12 (37.5) | 14 (48.3) | 10.8 (–14.0 to 34.4) | .324 |
| Type 3 | 34 (55.7) | 20 (62.5) | 14 (48.3) | 14.2 (–10.8 to 37.6) | .218 |
| Preoperative imaging | |||||
| Radiograph | 61 (100) | 32 (100) | 29 (100) | NA | NA |
| CT | 15 (24.6) | 7 (21.9) | 8 (27.6) | 5.7 (–16.1 to 27.7) | .570 |
| MRI | 7 (11.5) | 6 (18.8) | 1 (3.5) | 15.3 (–1.1 to 32.7) | .315 |
| Displacement, mm | |||||
| Pretreatment | 6.7 ± 3.5 | 7.9 ± 3.3 | 5.4 ± 3.4 | 2.5 (0.6 to 4.3) | .009 |
| Posttreatment | 0.9 ± 1.3 | 1.3 ± 1.5 | 0.5 ± 0.8 | 0.8 (0.2 to 1.4) | .012 |
| Concomitant injuries | 9 (14.8) | 6 (18.8) | 3 (9.4) | 8.4 (–10.7 to 27.1) | .315 |
a Data are reported as mean ± SD or No. (%) of patients unless otherwise indicated. CT, computed tomography; MRI, magnetic resonance imaging; NA, not applicable; TSA, tibial spine avulsion.
b Bold P values indicate statistically significant difference between study groups (P < .05). Standardized nominate deviation test used for proportions; t test used for means.
c According to Meyers and McKeever classification. 21