Precision of robotic guided instrumentation for acetabular component positioning.
case_series · Level IV
Where this comes from
- Record sourced from PubMed, PMID 25453633.
- Also identified by DOI 10.1016/j.arth.2014.10.021.
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Abstract
Robotic computerized instrumentation that guides bone preparation and cup implantation in total hip arthroplasty was studied. In 38 patients (43 hips) intraoperative cup inclination and anteversion were validated by postoperative CT scans. Planned inclination was 39.9°±0.8° and with robotic instrumentation was 38. 0°±1.6° with no outliers of 5°; on the postoperative CT scan there were 5 outliers (12%). Planned anteversion was 21.2°±2.4° and intraoperatively was 20.7°±2.4° with no outlier of 5°; on the CT there were 7 outliers (16%). The center of rotation (COR) was superior by a mean 0.9±4.2 mm and medial by 2.7±2.9 mm. This robotic instrumentation achieved precision of inclination in 88%, anteversion in 84% and COR in 81.5%.
Medical subject headings
- Acetabulum
- Arthroplasty, Replacement, Hip
- Hip Prosthesis
- Osteoarthritis, Hip
- Robotic Surgical Procedures
Anatomy
- hip
- pelvis