A Fluoroscopic Grid in Supine Total Hip Arthroplasty Improving Cup Position, Limb Length, and Hip Offset

University of Utah, Department of Orthopaedic Surgery, Salt Lake City, Utah 84108, USA.
The Journal of arthroplasty (Impact Factor: 2.67). 05/2012; 27(8 Suppl):111-6. DOI: 10.1016/j.arth.2012.03.027
Source: PubMed


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.

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