Does the Direct Anterior Approach in THA Offer Faster Rehabilitation and Comparable Safety to the Posterior Approach?
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Newer surgical approaches to THA, such as the direct anterior approach, may influence a patient’s time to recovery, but it is important to make sure that these approaches do not compromise reconstructive safety or accuracy.
We compared the direct anterior approach and conventional posterior approach in terms of (1) recovery of hip function after primary THA, (2) general health outcomes, (3) operative time and surgical complications, and (4) accuracy of component placement.
In this prospective, comparative, nonrandomized study of 120 patients (60 direct anterior THA, 60 posterior THAs), we assessed functional recovery using the VAS pain score, timed up and go (TUG) test, motor component of the Functional Independence Measure™ (M-FIM™), UCLA activity score, Harris hip score, and patient-maintained subjective milestone diary and general health outcome using SF-12 scores. Operative time, complications, and component placement were also compared.
Functional recovery was faster in patients with the direct anterior approach on the basis of TUG and M-FIM™ up to 2 weeks; no differences were found in terms of the other metrics we used, and no differences were observed between groups beyond 6 weeks. General health outcomes, operative time, and complications were similar between groups. No clinically important differences were observed in terms of implant alignment.
We observed very modest functional advantages early in recovery after direct anterior THA compared to posterior-approach THA. Randomized trials are needed to validate these findings, and these findings may not generalize well to lower-volume practice settings or to surgeons earlier in the learning curve of direct anterior THA.
Level of Evidence
Level II, therapeutic study. See Instructions for Authors for a complete description of levels of evidence.
KeywordsHeterotopic Ossification Functional Independence Measure Direct Anterior Approach Posterior Group General Health Outcome
We thank Kelly Stets MD, Raman Thakur MD, Anitha Jacob PA-C, Julie Pate PA-C, Leah Verebes PA, Neil Moskowitz PT, Daniel Gross DPT, PT, and Kshitij Agrawal MD for their help with this study.
- 6.Bergin PF, Doppelt JD, Kephart CJ, Benke MT, Graeter JH, Holmes AS, Haleem-Smith H, Tuan RS, Unger AS. Comparison of minimally invasive direct anterior versus posterior total hip arthroplasty based on inflammation and muscle damage markers. J Bone Joint Surg Am. 2011;93:1392–1398.PubMedCrossRefGoogle Scholar
- 12.Guide to the Uniform Data Set for Medical Rehabilitation (Adult FIM), Version 4.0. Buffalo, NY: State University of New York at Buffalo; 1993.Google Scholar
- 15.Kosinski M. Scoring the SF-12 physical and mental summary measures. Medical Outcomes Trust Bulletin. 1997;5:3–4.Google Scholar
- 21.Mayr E, Nogler M, Benedetti MG, Kessler O, Reinthaler A, Krismer M, Leardini A. A prospective randomized assessment of earlier functional recovery in THA patients treated by minimally invasive direct anterior approach: a gait analysis study. Clin Biomech (Bristol, Avon). 2009;24:812–818.PubMedCrossRefGoogle Scholar