ACETABULUM PEDIS .2. TALOCALCANEONAVICULAR JOINT SOCKET IN CLUBFOOT

Many pathoanatomic studies of clubfeet have been made. Bone changes an d ligament and tendon alterations are among the different deformities reported in the literature. The socket of the talocalcaneonavicular jo int is termed the acetabulum pedis (AP), and alterations of the joint have been reported previously as malformations associated with clubfoo t. We report pathoanatomic observations of AP in three human clubfoot specimens. Anomalies in AP were observed and compared with those in no rmal feet. In such cases, AP volume is restricted. Surface area is red uced on the acetabular floor and medial wall. Changes occur in the oss eous components as well as in the ligaments of the AP.