Journal
JOURNAL OF ARTHROPLASTY
Volume 30, Issue 11, Pages 1959-1962Publisher
CHURCHILL LIVINGSTONE INC MEDICAL PUBLISHERS
DOI: 10.1016/j.arth.2015.05.022
Keywords
total hip arthroplasty; anterior approach; posterior approach; cup angle; dislocation
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Funding
- Inova Health Systems, Inc.
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The purpose of this study was to compare cup position, jump distance, and rate of dislocations in 100 total hip arthroplasty (THA) cases performed with the direct anterior approach (DAA) and 100 cases performed with the posterior approach (PA). Abduction and anteversion angles were measured using Martell Hip Analysis software. The average cup anteversion in the DAA group (17.6 degrees) was significantly different than the PA average (22.6 degrees), P < .001. The average cup abduction angle was similar between groups (DAA 44.2 degrees vs. PA 44.3 degrees, P = .87), but the variance was significantly reduced with the direct anterior approach, P = .02. The use of intraoperative fluoroscopy with the DAA allowed for more accurate cup placement and eliminated severely vertical cups (>55 degrees) seen with the PA. (C) 2015 Elsevier Inc. All rights reserved.
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