17 April 2023 : Clinical Research
Tri-Lock Bone Preservation Stem Versus Conventional Corail Stem in Primary Total Hip Arthroplasty via Direct Anterior Approach: A Short-Term, Retrospective, Comparative Study
Kun Chu1ABCDE, Yuchuan Wang1D, Meng Yang1A, Congcong Wei1B, Jia Huo1C, Mengxuan Yao1B, Zihang Li1D, Huijie Li1D*DOI: 10.12659/MSM.939635
Med Sci Monit 2023; 29:e939635
Table 5 Postoperative prosthesis imaging results.
| Tri-Lock BPS | Corail | P | |
|---|---|---|---|
| Neck stem angle (°) | 132.78±4.31 | 133.53±5.06 | 0.248 |
| Eccentric distance (mm) | 45.83±5.47 | 44.91±5.06 | 0.451 |
| Force line of the prosthesis | |||
| Neutral position | 93 (94.8%) | 99 (93.3%) | 0.651 |
| Internal rotation | 3 (3.0%) | 4 (3.7%) | |
| External rotation | 2 (2.0%) | 3 (2.8%) | |
| Lower limb length difference (mm) | 3.28±5.97 | 3.75±5.68 | 0.704 |
| Prosthetic subsidence | 0 | 0 | – |
| Osteolysis | 0 | 0 | – |
| Ectopic ossification | 0.717 | ||
| Grade 1 | 1 (1.0%) | 2 (1.8%) | |
| Grade 2 | 1 (1.0%) | 1 (0.9%) | |
| Grade 3 | 0 | 0 | – |
| Grade 4 | 0 | 0 | – |
| Stress shielding | 0.749 | ||
| Grade 1 | 27 (27.5%) | 24 (22.6%) | |
| Grade 2 | 21 (21.4%) | 28 (26.4%) | |
| Grade 3 | 9 (9.1%) | 12 (11.3%) | |
| Grade 4 | 0 | 1 (0.9%) |