Roentgenographic assessment of the hip-knee-ankle axis in medial gonarthrosis. A study of reproducibility.

Odenbring, S; Berggren, A M; Peil, L · Clin Orthop Relat Res · 1993

cross_sectional · Level IV

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Abstract

A preoperative reliable recording of the knee alignment is necessary to calculate the correct wedge at high tibial osteotomy for medial gonarthrosis. To determine the reproducibility of the hip-knee-ankle angle (HKA), a preoperative, whole lower limb roentgenogram was obtained twice in eight patients, and each roentgenogram was judged by two radiologists. Assessment of the HKA had a variability of at most 2 degrees, which is highly significant for a reliable calculation of the wedge at tibial osteotomy.

Medical subject headings

Anatomy