Key result
Surgical hip dislocation through a modified direct lateral approach showed no significant perfusion changes post-capsulectomy, but prolonged dislocation decreased perfusion (mean -28%, P=0.002).
Why the study?
This study aimed to measure femoral head perfusion during hip resurfacing arthroplasty through a trochanter-sparing modified direct lateral approach.
Does surgical hip dislocation through a modified direct lateral approach affect femoral head perfusion in patients undergoing hip resurfacing arthroplasty?
Population
26 patients (26 hips, age range 35-70 years) undergoing hip resurfacing arthroplasty
Comparison
Post-capsulectomy and post-dislocation/reduction vs pre-capsulectomy reference perfusion
Authors
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May warrant limiting dislocation duration; leaves open clinical sequelae and need for prospective validation.
Observational (n=26)
Does surgical hip dislocation through a modified direct lateral approach affect femoral head perfusion in patients undergoing hip resurfacing arthroplasty?
Effect estimate: mean -10% post-capsulectomy; mean +27% following dislocation and reduction
p-value: p=0.134 and 0.166
Surgical hip dislocation through a modified direct lateral approach is feasible and does not significantly compromise femoral head perfusion unless prolonged dislocation with maximal flexion and external rotation occurs.
Halawi et al. (2019) conducted an observational in Hip resurfacing arthroplasty (n=26). Surgical hip dislocation through a modified direct lateral approach vs. Pre-capsulectomy baseline was evaluated on Changes in femoral head perfusion post-capsulectomy and following femoral head dislocation and reduction (mean -10% post-capsulectomy; mean +27% following dislocation and reduction, p=0.134 and 0.166). Surgical hip dislocation through a modified direct lateral approach showed no significant perfusion changes post-capsulectomy, but prolonged dislocation decreased perfusion (mean -28%, P=0.002).
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