Table 4.
Eight-week radiographic outcomes
| Variable | DA THA group (n = 126) | MP THA group (n = 96) | p value |
|---|---|---|---|
| Cup abduction (°) | 0.1270 | ||
| Mean (SD) | 39.1 (5.0) | 40.2 (5.7) | |
| Median | 39.0 | 40.1 | |
| Range | 26.0–51.0 | 27.0–55.0 | |
| Cup anteversion (ischiolateral) (°) | 0.0490 | ||
| Mean (SD) | 52.7 (9.0) | 50.2 (9.5) | |
| Median | 53.0 | 50.7 | |
| Range | 23.2–77.0 | 29.9–75.0 | |
| Cup anteversion (Woo-Morrey) (°) | 0.0009 | ||
| Mean (SD) | 35.8 (6.9) | 32.5 (7.4) | |
| Median | 36.0 | 32.9 | |
| Range | 15.0–53.1 | 10.3–52.6 | |
| Femoral offset (mm) | 0.0009 | ||
| Mean (SD) | 0.6 (4.4) | 3.0 (5.6) | |
| Median | 0.0 | 1.2 | |
| Range | −14.7 to 14.8 | −10.5 to 19.1 | |
| Leg length discrepancy (mm) | 0.0099 | ||
| Mean (SD) | 1.0 (4.1) | −0.9 (6.0) | |
| Median | 0.0 | 0.0 | |
| Range | −9.0 to 13.4 | −21.5 to 16.1 | |
| Stem position AP (number of patients) | 0.0809 | ||
| Missing | 1 | 0 | |
| Neutral | 88 (70%) | 80 (83%) | |
| Valgus | 3 (2%) | 1 (1%) | |
| Varus | 34 (27%) | 15 (15%) | |
| Stem position lateral (number of patients) | < 0.0001 | ||
| Missing | 1 | 0 | |
| Extended | 0 (0%) | 1 (1%) | |
| Flexed | 48 (38%) | 12 (12%) | |
| Neutral | 77 (61%) | 83 (86%) | |
DA = direct anterior approach; MP = miniposterior approach.