TABLE I.
Patient Demographics, Preoperative Factors, and Surgical Details* (N = 54)
| Demographics | |
| Age at surgery (yr) | 64 (38-85) |
| Women | 29 (53.7%) |
| BMI (kg/m2) | 29.8 ± 7.6 |
| Time to dislocation | 41 wk (1 day-6 yr) |
| Follow-up (yr) | 2.5 ± 1.2 |
| Preoperative factors | |
| Primary/revision | 10/44 |
| Prior instability | 2/37 |
| Prior spine fusion | 3/19 |
| Abductor insufficiency | 2/7 |
| Conversion arthroplasty | 4/NA |
| Cognitive impairment | 4/13 |
| Surgical factors | |
| Approach | |
| Anterior | 15 (27.8%) |
| Posterior | 39 (72.2%) |
| DM manufacturer | |
| DePuy Synthes | 2 |
| Smith & Nephew | 7 |
| Stryker | 26 |
| Zimmer Biomet | 19 |
| Head size | |
| 22 mm | 3 |
| 28 mm | 51 |
| Indication for DM THA | |
| Primary osteoarthritis | 6 |
| Posttraumatic osteoarthritis | 4 |
| Instability | 37 |
| Adverse local tissue reaction | 4 |
| Periprosthetic fracture | 1 |
| Infection | 6 |
| Aseptic loosening | 2 |
*
The values are given as the mean (range), mean ± standard deviation, or number with or without the percent in parentheses. NA = not applicable.