Table 5 Propensity-matched study cohort
Group (hips) | Dialysis group (26) | Control group (26) | p-value |
|---|---|---|---|
Sex, male and female | 3 (11.5) and 23 (88.5) | 3 (11.5) and 23 (88.5) | 1.000 |
Age at primary THA, years | 53.7 ± 8.9 (44–74) | 56.2 ± 10.0 (42–79) | 0.8907 |
Height, cm | 150.5 ± 8.9 (129.6–165.0) | 150.0 ± 8.9 (127.1–157.6) | 0.7626 |
Weight, kg | 44.8 ± 7.6 (30.2–59.6) | 44.9 ± 5.4 (32.8–56.5) | 0.9198 |
Body mass index, kg/m2 | 19.8 ± 3.1 (15.7–25.8) | 20.0 ± 2.1 (16.3–24.7) | 0.6018 |
Follow-up period after primary THA (months) | 107.1 ± 42.8 (60–216) | 104.8 ± 33.2 (60–168) | 0.8290 |
Preoperative diagnosis for primary THA | |||
Osteoarthritis | 21 (80.8) | 22 (84.6) | 0.5995 |
Osteonecrosis | 4 (15.4) | 4 (15.4) | |
Fracture | 1 (3.3) | 0 (0) | |
Operative time, min | 40.4 ± 11.7 (25–64) | 38.2 ± 9.0 (25–55) | 0.4449 |
Intraoperative blood loss, g | 232.2 ± 114.4 (70–410) | 243.6 ± 145.1 (50–550) | 0.7531 |
Postoperative blood loss, g | 301.3 ± 220.9 (20–730) | 438.5 ± 238.0 (120–990) | 0.0361 |
Harris hip scores | |||
Total before THA | 40.5 ± 12.0 (30–74) | 39.1 ± 12.0 (18–66) | 0.6717 |
Total at final follow-up | 81.3 ± 14.8 (36–95) | 87.4 ± 9.2 (62–95) | 0.1036 |
Autogenous bone graft | 10 (38.5) | 6 (23.1) | 0.2294 |
Transfusion | 7 (26.9) | 2 (8.7) | 0.1400 |
Radiographic evaluation | |||
Dorr cortical bone classification before primary THA | A (11), B (11), C (4) | A (6), B (18), C (2) | 0.1476 |
Stress shielding at final follow-up | 1 (6), 2 (8), 3 (3), 4 (4) | 1 (9), 2 (2), 3 (5), 4 (3) | 0.2697 |