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. 1992 Jul:(280):48-64.

Mechanical axis deviation of the lower limbs. Preoperative planning of uniapical angular deformities of the tibia or femur

Affiliations
  • PMID: 1611764

Mechanical axis deviation of the lower limbs. Preoperative planning of uniapical angular deformities of the tibia or femur

D Paley et al. Clin Orthop Relat Res. 1992 Jul.

Abstract

Angular deformities of the tibia or femur in the frontal plane lead to mechanical axis deviation of the lower limb and malorientation of the joints above and below the level of deformity. Accurate correction of the malalignment and of the joint orientation is important for function and to prevent joint degeneration. An accurate yet simple method to determine the apex of deformity and the type of correction required is based on the joint reference lines of the hip, knee, and ankle, and the individual mechanical axis lines of each bone segment. If the osteotomy is performed at the level of the apex of the deformity, then the only correction needed is angulation. If the osteotomy is performed at a level proximal or distal to the apex, then translation in addition to angulation is necessary to accurately correct the deformity.

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