Introduction
THA, pain
SCAR
Total hip arthroplasty (THA), one of the most successful and frequently performed elective surgeries, can effectively relieve hip pain, significantly improve function, and improve quality of lifeOver the past decade, the direct anterior approach (DAA) has received increasing attention. Interest in surgical approach to THA continues to be high. Specific pros and cons of the DAA vs PLA have been debated in the literature with no clear consensusA modified minimal oblique incision using the groin cleavage line (bikini incision) for the DAA has recently demonstrated encouraging results, especially in improved cosmesis and postoperative scarringTo the best of our knowledge, no prospective RCT studies have been conducted to evaluate the early postoperative outcomes of the bikini incision for simBTHA. Furthermore, well-designed prospective randomized trials comparing the bikini incision and the posterolateral approach (PLA) for simBTHA in terms of postoperative recovery, components placement, and scar recovery satisfaction were absent in the literature. Therefore, we conducted a prospective randomized controlled trial (RCT) to compare perioperative and early postoperative outcomes between the bikini incision and the PLA among simBTHA patients. We hypothesized that bikini incision could enhance the early recovery, the accuracy of prosthesis orientation, early postoperative outcomes, and scar healing.