Roentgenographic assessment of the hip-knee-ankle axis in medial

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gonarthrosis. A study of reproducibility. Odenbring-S. Berggren-A-M. Peil-L. Department of Orthopedics, Central Hospital, Kristianstad, Sweden. Clin-Orthop. 1993 Apr. (289). P 195-6. 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. Author-abstract.