Quinzi DA, Childs S, Kuhns B, et al. - This research was undertaken to investigate patient reported outcomes measurement information system (PROMIS) computer adaptive test (CAT) scores for domains of physical function (PF) and pain interference (PI) in individuals undergoing elective total hip arthroplasty (THA) from either a direct anterior or posterior surgical approach. Researchers enrolled a sum of 1,358 individuals who had undergone THA at the institution between 1/1/2015 and 12/1/2018. Researchers obtained visual analog scale pain scores, PROMIS CAT PF and PI data at the last preoperative visit as well as 6 weeks, 6 months, and 1-2 years postoperatively. For data comparison, literature-derived minimum clinically important difference (MCID) for PROMIS CAT PF metric with regard to THA was applied. The final analysis included a total of 409 individuals. This study's findings illustrate that neither the direct anterior nor posterior THA surgical technique conferred an advantage to postoperative improvements of PROMIS CAT PF and PI scores. It was considered that adult reconstructive surgeons should continue to conduct the direct anterior or posterior THA surgical techniques based upon personal preference. The potential for future innovation exists given the number of THA individuals who failed to achieve PROMIS PF MCID, despite surgeon confidence in THA.