Kinematics of the ankle: a hinged axis model.

Abstract

Dear Editor: I read with interest the recent article "Kinematics of the Ankle: A Hinged Axis Model" by Singh et al. (Foot & Ankle 13:439-446, 1992). The authors may have misquoted my article. Our research' on kinematics of the ankle studied only tibial-talar motion and did not involve the subtarsal and midtarsal joints. In their article, the authors attempt to determine a single axis through cadaver specimens, but do not take into account the livingpatient. Our study was undertaken on live patients during weightbearing. There can be little comparison between such a study on living patients and those of cadaver specimens.