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J Arthroplasty. 2014 Jan;29(1):137-41. doi: 10.1016/j.arth.2013.04.004. Epub 2013 May 13.

The impact of leg length discrepancy on clinical outcome of total hip arthroplasty: comparison of four measurement methods.

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1
Department of Orthopaedic Surgery, University Medical Centre Ljubljana, Ljubljana, Slovenia.

Abstract

In a single-surgeon series of 119 patients with unilateral primary uncemented total hip arthroplasty, four leg-length discrepancy measurement methods (absolute, relative, trochanteric, standardized-trochanteric) were analyzed for their impact on WOMAC score, Oxford Hip Score and self-perceived leg-length discrepancy. After adjustment for age, gender and BMI, postoperative WOMAC scores correlated only with clinical absolute measurements of leg elongation (P=0.05). Self-perceived leg-length discrepancy corresponded best to the clinically measured relative leg-length discrepancy (11 mm perceived vs. 7 mm unperceived; P=0.04) while there was no significant correspondence with radiographic measurements or leg elongation magnitudes. Within the <10 mm range of mean postoperative leg length discrepancy in the studied series, its impact on the overall clinical satisfaction was detectable but not considerable.

KEYWORDS:

arthroplasty; hip; leg length inequality; patient outcome assessment

PMID:
23680505
DOI:
10.1016/j.arth.2013.04.004
[Indexed for MEDLINE]
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