The purpose of this single-surgeon randomized study was to determine if functional recovery during the early postoperative period differs between the direct anterior (DAA) and posterior approaches (PA). An a priori power analysis indicated that 26 patients per group were needed, and 6-week follow-up data were available for 51 THAs to date. Hospitals stays were significantly shorter for the DAA group (1.4 vs. 2.0 days, P=0.01), and the change in Pain Scores was significantly greater for the DAA group (P=0.04). The DAA group also discontinued use of an assistive ambulatory device at an earlier time (33.0 vs. 43.1 days, P=0.03). Despite these differences, no other subjective or objective functional measures differed between the 2 groups at the 6-week follow-up.
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