Width of the Normal Ankle Joint

Abstract
An investigation of the talocrural joint was performed in 160 normal adults, 80 males and 80 females. The joint space was measured on films at 6 locations, 3 in the antero-posterior and 3 in the lateral view of the ankle. The average joint space in men was 3.4 mm and in women 2.9 mm, which is a significant difference (P < 0.001). The joint space was wider in the medial part when evaluating the antero-posterior view, but did not change with age.