Braxton Forde1, Kathleen Engeln2, Hany Bedair3, Nicholas Bene4, Carl Talmo5, Sumon Nandi6. 1. The Johns Hopkins University School of Medicine, Baltimore, MD, United States. 2. Baylor College of Medicine, Houston, TX, United States. 3. Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States. 4. Tufts University School of Medicine, Boston, MA, United States. 5. New England Baptist Hospital, Boston, MA, United States. 6. The University of Toledo College of Medicine and Life Sciences, Toledo, OH, United States.
Abstract
PURPOSE: Our aim was to determine if acetabular component position, femoral offset restoration, or leg-length equality is most important for total hip arthroplasty (THA) stability. METHODS: A matched case (n = 67)-control (n = 247) design and conditional logistic regression model were used to examine risk factors for dislocation in primary THA. RESULTS: When femoral offset was at least 3 mm greater than that of the contralateral hip, risk of dislocation was lower (p = 0.0192). Neither leg-length difference nor acetabular component abduction or version angle was associated with dislocation. CONCLUSIONS: Our data suggest restoring femoral offset is the most important technical factor in preventing THA dislocation.
PURPOSE: Our aim was to determine if acetabular component position, femoral offset restoration, or leg-length equality is most important for total hip arthroplasty (THA) stability. METHODS: A matched case (n = 67)-control (n = 247) design and conditional logistic regression model were used to examine risk factors for dislocation in primary THA. RESULTS: When femoral offset was at least 3 mm greater than that of the contralateral hip, risk of dislocation was lower (p = 0.0192). Neither leg-length difference nor acetabular component abduction or version angle was associated with dislocation. CONCLUSIONS: Our data suggest restoring femoral offset is the most important technical factor in preventing THA dislocation.
Entities:
Keywords:
Component position; Dislocation; Femoral offset; Total hip arthroplasty
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