Table 2.
Patient and fracture characteristics by outcome
| Variable | Not reoperated | Reoperated | Statistics | No osteoarthritis | Osteoarthritis | Statistics |
|---|---|---|---|---|---|---|
| Number of cases n (%) | 27 (82 %) | 6 (18 %) | 23 (70 %) | 10 (30 %) | ||
| Average age in years (SD, range) | 35 (15, 13–69) | 49 (21, 27–75) | p = 0.08 (Student) | 37 (16, 13–69) | 40 (20, 20–75) | p = 0.6 (Student) |
| Sex n male:n female (%: %) | 23:4 (85 %:15 %) | 5:1 (83 %:17 %) | p = 1.0 (Fisher) | 20:3 (87 %:13 %) | 8:2 (80 %:20 %) | p = 0.6 (Fisher) |
| Side n right:n left (%: %) | 13:14 (48 %:52 %) | 3:3 (50 %:50 %) | p = 1.0 (Fisher) | 11:12 (48 %:52 %) | 5:5 (50 %:50 %) | p = 1.0 (Fisher) |
| Cause, n (%) | p = 0.3 (χ2) | p = 0.15 (χ2) | ||||
| Car accident | 19 (70 %) | 6 (100 %) | 16 (70 %) | 9 (90 %) | ||
| Motorbike accident | 4 (15 %) | 0 (0 %) | 3 (13 %) | 1 (10 %) | ||
| Fall, sports accident | 4 (15 %) | 0 (0 %) | 4 (17 %) | |||
| Fracture type | ||||||
| n isol. PW: n assoc. PW (%:%) | 11:16 (41 %:59 %) | 1:5 (17 %:83 %) | p = 0.4 (Fisher) | 11:12 (48 %:52 %) | 1:9 (10 %:90 %) | p = 0.054 (Fisher) |
| Joint dislocation at admission n (%) | 22 (81 %) | 6 (100 %) | p = 0.6 (Fisher) | 18:5 (78 %:22 %) | 10:0 (100 %:0 %) | p = 0.3 (Fisher) |
| Multiple fragments n (%) | 19 (70 %) | 6 (100 %) | p = 0.3 (Fisher) | 15 (65 %) | 10 (100 %) | p = 0.07 (Fisher) |
| Marginal impaction n (%) | 10 (37 %) | 3 (50 %) | p = 0.7 (Fisher) | 9 (39 %) | 4 (40 %) | p = 1.0 (Fisher) |
| Intra-articular fracture n (%) | 10 (37 %) | 3 (50 %) | p = 0.7 (Fisher) | 7 (30 %) | 6 (60 %) | p = 0.14 (Fisher) |
| Femoral head lesion n (%) | 14 (52 %) | 4 (67 %) | p = 0.7 (Fisher) | 11 (48 %) | 7 (70 %) | p = 0.3 (Fisher) |
| Traumatic nerve palsy n (%) | 5 (19 %) | 0 (0 %) | p = 0.6 (Fisher) | 5 (22 %) | 0 (0 %) | p = 0.3 (Fisher) |
| Average delay to injury surgery in days (SD, range) | 8 (8, 1–40) | 7 (4, 3–12) | p = 0.6 (Student) | 7 (5, 1–18) | 11 (12, 3–40) | p = 0.089 (Student) |
| Average surgery time in httpminutes (SD, range) | 193 (47, 120–270) | 238 (42, 180–300) | p = 0.039 (Student) | 185 (46, 120–270) | 239 (34, 180–300) | p = 0.003 (Student) |
| Average follow-up in months (SD, range) | 54 (33, 12–135) | 59 (39, 25–133) | p = 0.8 (Student) | 56 (35, 12–135) | 53 (33, 25–133) | p = 0.8 (Student) |
FisherFisher’s exact test, StudentStudent’s t test,χ2 chi square test