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J Arthroplasty. 2012 Sep;27(8 Suppl):111-6. doi: 10.1016/j.arth.2012.03.027. Epub 2012 May 3.

A fluoroscopic grid in supine total hip arthroplasty: improving cup position, limb length, and hip offset.

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  • 1University of Utah, Department of Orthopaedic Surgery, Salt Lake City, Utah 84108, USA.

Abstract

We hypothesized that use of a novel fluoroscopic grid would decrease operative time and component positioning variability during anterior supine total hip arthroplasty (THA). We reviewed 99 anterior supine THAs: 39 using a fluoroscopic grid, and 60 using fluoroscopy alone. Goals were cup abduction of 40° ± 10° and limb length and hip offset within 10 mm of the contralateral side. Surgical time was decreased in the study group (79 vs 94 minutes, P = .002). In the study group, more components met the goal for cup abduction (97% vs 83%, P = .046), limb length (100% vs 88%, P = .04), hip offset (85% vs 67%, P = .047), and all 3 combined (82% vs 52%, P = .002). We demonstrated decreased component positioning variability during anterior supine THA with assistance of a fluoroscopic grid.

PMID:
22560563
DOI:
10.1016/j.arth.2012.03.027
[PubMed - indexed for MEDLINE]
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