The Impact of Leg Length Discrepancy on Clinical Outcome of Total Hip Arthroplasty: Comparison of Four Measurement Methods |
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Authors: | Matej Ker&scaron ičDrago Dolinar,MD,PhD,Vane AntoličBlaž Mavčič,MD,PhD |
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Affiliation: | Department of Orthopaedic Surgery, University Medical Centre Ljubljana, Ljubljana, Slovenia |
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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. |
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Keywords: | arthroplasty hip leg length inequality patient outcome assessment |
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