Navigation-assisted hip resurfacing may improve acetabular component positioning
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Key takeaways:
- Hip resurfacing may be an acceptable alternative to hip arthroplasty for hip osteoarthritis, with positive outcomes at 2-year follow-up.
- Navigation-assisted resurfacing may enhance acetabular cup positioning.
Published results showed navigation-assisted hip resurfacing may yield enhanced acetabular cup positioning and positive 2-year patient-reported outcomes for patients with hip osteoarthritis.
Roger Quesada-Jimenez, MD, and colleagues from the American Hip Institute performed a retrospective review of data from 94 patients who underwent primary hip resurfacing for OA and had complete patient-reported outcomes (PROs) and postoperative radiographs at 2-year follow-up.
Quesada-Jimenez and colleagues also performed a subanalysis of two matched cohorts of patients who received navigation-assisted resurfacing (n = 38 hips) and patients who underwent resurfacing without navigation assistance (n = 38 hips).
According to the study, PROs included modified Harris Hip Score (mHHS), Hip Disability and Osteoarthritis Outcome Score for Joint Replacement (HOOS-JR), Forgotten Joint Score (FJS), VAS pain score and patient satisfaction.
At 2-year follow-up, Quesada-Jimenez and colleagues found no differences in mHHS, HOOS-JR, FJS, VAS pain scores or patient satisfaction among the navigation group vs. the non-navigation group. They noted 97.4% of the navigation group and 94.7% of the non-navigation group achieved the minimal clinically important difference for PROs.
Compared with the non-navigation group, the navigation group was 28.8 times more likely to have cup positioning within the Callanan safe zone and 6.8 times more likely to have cup positioning within the Lewinnek safe zone.
After analysis of the relative acetabular inclination limit, Quesada-Jimenez and colleagues found the navigation group was 3.1 times more likely to be within the 95% safe zone and 6.4% more likely to be within the 99% safe zone compared with the non-navigation group.
“Hip resurfacing is an excellent treatment option for individuals with OA, particularly those who have high physical demands,” Quesada-Jimenez and colleagues wrote in the study.
“The use of navigation-assisted surgery optimizes the accuracy of acetabular component positioning, with a higher likelihood of cup placement within the safe zones. This precision may be associated with a reduced risk of revision surgery,” they concluded.
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