Table 1.
Patient demographic details.
| Variable | Automated | Mallet | P value |
|---|---|---|---|
| Mean age (y) | 64.8 (43 to 83) | 64.6 (36 to 85) | .89 |
| Gender | |||
| Women | 59 (54.1%) | 62 (56.9%) | .79 |
| Mean BMI (kg/m2) | 28.1 (17 to 50.8) | 28.1 (19 to 44.3) | .96 |
| ASA risk | |||
| I | 6 (5.5%) | 3 (2.8%) | .69 |
| II | 68 (62.4%) | 70 (64.2%) | |
| III | 35 (32.1%) | 36 (33.0%) | |
| IV | 0 | 0 | |
| Primary diagnosis | |||
| Avascular necrosis | 4 (3.7%) | 7 (6.4%) | .31 |
| Degenerative joint disease | 5 (4.6%) | 8 (7.3%) | |
| Hip dysplasia (CDH/DDH) | 0 | 2 (1.8%) | |
| Osteoarthritis | 99 (90.8%) | 92 (84.4%) | |
| Rheumatoid arthritis | 1 (0.9%) | 0 | |
| Operative side | |||
| Left | 46 (42.2%) | 47 (43.1%) | 1.0 |
| Bone class (proximal femoral) | |||
| Normal | 64 (58.7%) | 66 (60.6%) | .50 |
| Good | 35 (32.1%) | 38 (34.9%) | |
| Fair | 8 (7.3%) | 5 (4.6%) | |
| Poor | 2 (1.8%) | 0 | |
| Osteoporotic | 0 | 0 | |
| Sclerotic | 0 | 0 | |
| Bone class (distal femoral) | |||
| Normal | 65 (59.6%) | 68 (62.4%) | .92 |
| Good | 37 (33.9%) | 36 (33.0%) | |
| Fair | 6 (5.5%) | 5 (4.6%) | |
| Poor | 0 | 0 | |
| Osteoporotic | 0 | 0 | |
| Sclerotic | 0 | 0 | |
| DORR type | |||
| A | 31 (28.4%) | 34 (31.2%) | .77 |
| B | 77 (70.6%) | 75 (68.8%) | |
| C | 1 (0.9%) | 0 |