Table 1.
Categorical variables included in the study
| Variable | Categories | Number of hips (%) |
|---|---|---|
| Gender | Men | 44 (28) |
| Women | 111 (72) | |
| Preoperative diagnosis | Osteoarthritis | 29 (19) |
| Hip dysplasia | 71 (46) | |
| Osteonecrosis | 30 (19) | |
| Traumatic | 14 (9) | |
| Inflammatory | 6 (4) | |
| SCFE | 5 (3) | |
| Charnley type | A | 53 (34) |
| B | 89 (57) | |
| C | 13 (8) | |
| Liner geometry | Neutral | 125 (81) |
| Hooded | 30 (19) | |
| Head material | CoCr | 143 (92) |
| Zirconia | 12 (8) | |
| Cup abduction angle | Between 30° and 50° | 120 (77) |
| Above 50° | 35 (23) | |
| Cup relation to KL | Laterally | 14 (9) |
| In contact | 27 (17) | |
| Medially | 114 (74) | |
| True acetabular region | Yes | 123 (79) |
| No | 32 (21) | |
| Stability of the implant | Stable | 121 (78) |
| Unstable | 34 (22) | |
| Acetabular BD | Type I, II | 44 (28) |
| Type III | 87 (56) | |
| Type IV, V | 24 (16) | |
| Femoral BD | Type I, II | 127 (82) |
| Type III | 25 (16) | |
| Type IV | 3 (2) |
KL Kohler’s line, BD bone defects, SCFE slipped capital femoral epiphysis