Does CT-based navigation improve the long-term survival in ceramic-on-ceramic THA?
Nobuhiko Sugano1, Masaki Takao, Takashi Sakai
1Department of Orthopaedic Medical Engineering, Osaka University Graduate School of Medicine, Yamadaoka 2-2, Suita, Osaka 565-0871, Japan. sugano@ort.med.osaka-u.ac.jp
Clinical Orthopaedics and Related Research
|May 10, 2012
Summary
Navigated total hip arthroplasty (THA) significantly reduced dislocation and mechanical complications, improving long-term implant survival compared to non-navigated THA. This study confirms navigation
Area of Science:
- Orthopedic Surgery
- Biomedical Engineering
- Implant Technology
Background:
- Navigated total hip arthroplasty (THA) offers enhanced precision in implant positioning.
- Long-term implant survival benefits of navigated THA remain under investigation.
Purpose of the Study:
- To compare survivorship, dislocation rates, and radiographic failures (loosening, breakage) between navigated and non-navigated THA at minimum 10-year follow-up.
- To evaluate the impact of navigation on cementless THA outcomes with ceramic-on-ceramic bearings.
Main Methods:
- Retrospective review of 60 hips with navigation and 120 hips without navigation.
- Cementless THA with ceramic-on-ceramic bearing couples were analyzed.
- Outcomes assessed included survivorship, component fixation, osteolysis, wear, and breakage at an average 11-year follow-up.
Main Results:
- 13-year survival was 100% with navigation vs. 95.6% without.
- Navigated THA achieved superior acetabular component positioning (inclination and anteversion).
- Dislocation rates were 0% with navigation versus 8% without; impingement complications were also reduced.
Conclusions:
- Navigation significantly decreases dislocation and impingement-related mechanical complications in cementless THA.
- Improved implant positioning with navigation translates to better long-term outcomes and reduced revision rates.
- Navigated THA with ceramic-on-ceramic bearings demonstrates excellent survivorship over a decade.
