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Preoperative leg-length inequality and hip osteoarthrosis: a radiographic study of 100 consecutive arthroplasty
K Tallroth1, M Ylikoski, H Lamminen
1Department of Radiology, ORTON Orthopaedic Hospital, Tenholantie 10, 00280,, Helsinki, Finland. kaj.tallroth@invalidisaatio.fi
Objective:
To assess the leg-length inequality in patients with hip osteoarthrosis (OA) and to evaluate a possible association between the length disparity and side of OA.
Design And Patients:
Weight-bearing radiographs of 100 consecutive patients undergoing arthroplasty for primary OA were examined and measured for inequality of leg length, pelvic tilt and severity of OA.
Results:
The radiographic results showed that preoperatively OA occurred more frequently in the hip of the longer (84%) than the shorter (16%) leg. However, the development of OA did not show a linear relationship with the magnitude of leg-length inequality.
Conclusion:
As hip OA occurred more frequently in the longer leg the authors speculate whether leg-length inequality might predispose to OA in the hip of the longer leg.
