Results from this study indicated Birmingham hip resurfacing resulted in outcomes comparable to total hip arthroplasty among young patients.
Benjamin G. Domb
“In this study, we sought to raise the bar for success in hip arthroplasty, essentially defining success as a surgery that the patient forgets that they had. Using the new forgotten joint score, we were able to show that the patients in our series almost never think about their hip surgery, as their resurfaced or replaced hips feel like and function like a normal hip,” study co-author Benjamin G. Domb, MD, told Healio.com/Orthopedics. “At our institution, Birmingham hip resurfacing is considered an excellent surgical option for the middle-aged, active male with hip arthritis.”
He added, “Resurfacing has held specific advantages compared to conventional hip replacement, including preservation of anatomy, replication of normal femoral version and minimal dislocation rate. On the other hand, the advent of robotic hip replacement has enabled us to capture these same benefits with a total hip replacement by customizing the implant positioning to the patient-specific anatomy with a high degree of precision.”
Researchers matched 42 patients who underwent Birmingham hip resurfacing (BHR) with 18 patients who underwent THA using a propensity score determined by a multiple logistic regression model that incorporated age, BMI, gender, workers’ compensation claims and previous hip surgery. The average age for the BHR group was 49 years vs. 53 years for patients in the posterior THA group. Median follow-up was 36.2 months and 62.3 months, respectively, for the groups. Patient-reported outcome measures, forgotten joint score-12, modified Harris hip score, Veterans RAND (VR) 12-item survey physical and mental component scales and VAS were used to evaluate surgical outcomes.
Results showed the forgotten joint score for patients who underwent BHR was 78 and was 76 for patients who underwent THA. Investigators noted patients who underwent BHR compared with patients who underwent THA had significantly higher VR-12 mental component and SF-12 physical component scores. Patient-reported outcomes were not significantly different between the two groups.
According to researchers, there were two complications among patients who underwent BHR; however, there were no complications among those who underwent THA.
“As we seek to elevate our standard of success in hip arthroplasty to give the patient a hip that they will think of as ‘normal,’ we believe that preservation of the normal anatomy, femoral version and spatial relationship between femur and pelvis are paramount,” Domb said. – by Monica Jaramillo
: Ortiz-Declet reports no relevant financial disclosures. Please see the full study for a list of all other authors’ relevant financial disclosures.