Effect of Lateral Heel Shift on the Angle of Articular Surfaces in Osteoarthritic Knees.

概要

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Precise correction is an important factor in high tibial osteotomy. It is known that the angle of the articular surfaces (condylar-plateau angle) in the standing position changes after HTO. Changes in the condylar-plateau angle resulting from lateral shift of the heel stuck to the sole was studied in medial compartmental osteoarthritis of the knee. When the line from the center of the femoral head to the heel (mechanical axis) passes through the point between 60%-75% of the width of the tibial articular surface from its medial margin, the condylar plateau angle decreases markedly. Our results suggested that the corrected mechanical axis should pass through over 75% of the width of the tibial articular surface in order to achieve satisfactory post operative results.
西日本整形・災害外科学会の論文