Weber, Markus and von Kunow, Frederik and Innmann, Moritz and Meyer, Matthias and Thieme, Max and Jerabek, Seth and Renkawitz, Tobias (2022) Which Safe Zone Is Safe in Total Hip Arthroplasty? The Effect of Bony Impingement. JOURNAL OF PERSONALIZED MEDICINE, 12 (5): 812. ISSN , 2075-4426
Full text not available from this repository. (Request a copy)Abstract
Safe zones for cup position are currently being investigated in total hip arthroplasty (THA). This study aimed to evaluate the impact of bony impingement on the safe zone and provide recommendations for cup position in THA. CT scans were performed on 123 patients who underwent a cementless THA. Using the implant data and bone morphology from the CT scans, an impingement detection algorithm simulating range of motion (ROM) determined the presence of prosthetic and/or bony impingement. An impingement-free zone of motion was determined for each patient. These zones were then compared across all patients to establish an optimized impingement-free "safe zone". Bony impingement reduced the impingement-free zone of motion in 49.6% (61/123) of patients. A mean reduction of 23.4% in safe zone size was observed in relation to periprosthetic impingement. The superposition of the safe zones showed the highest probability of impingement-free ROM with cup position angles within 40-50 degrees of inclination and 20-30 degrees of anteversion in relation to the applied cup and stem design of this study. Virtual ROM simulations identified bony impingement at the anterosuperior acetabular rim for internal rotation at 90 degrees of flexion and at the posteroinferior rim for adduction as the main reasons for bony impingement.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | NAVIGATION; RANGE; RADIOGRAPHS; ANTEVERSION; DISLOCATION; POSITION; MOTION; CUP; total hip arthroplasty; bony impingement; combined anteversion; safe zone |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Unfallchirurgie Medicine > Lehrstuhl für Orthopädie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 12 Dec 2023 10:33 |
| Last Modified: | 12 Dec 2023 10:33 |
| URI: | https://pred.uni-regensburg.de/id/eprint/57007 |
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