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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 Chu ABCDE , Yuchuan Wang D , Meng Yang A , Congcong Wei B , Jia Huo C , Mengxuan Yao B , Zihang Li D , Huijie Li D*

DOI: 10.12659/MSM.939635

Med Sci Monit 2023; 29:e939635

Table 5 Postoperative prosthesis imaging results.

Tri-Lock BPSCorailP
Neck stem angle (°)132.78±4.31133.53±5.060.248
Eccentric distance (mm)45.83±5.4744.91±5.060.451
Force line of the prosthesis
 Neutral position93 (94.8%)99 (93.3%)0.651
 Internal rotation3 (3.0%)4 (3.7%)
 External rotation2 (2.0%)3 (2.8%)
Lower limb length difference (mm)3.28±5.973.75±5.680.704
Prosthetic subsidence00
Osteolysis00
Ectopic ossification0.717
 Grade 11 (1.0%)2 (1.8%)
 Grade 21 (1.0%)1 (0.9%)
 Grade 300
 Grade 400
Stress shielding0.749
 Grade 127 (27.5%)24 (22.6%)
 Grade 221 (21.4%)28 (26.4%)
 Grade 39 (9.1%)12 (11.3%)
 Grade 401 (0.9%)

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750