Fig. 3From: Simulated weightbearing computed tomography for verification of radiographic staging of varus ankle osteoarthritis: a cross-sectional studySubluxation of the talus. A difference between these two measurements of less than 1 mm was classified as no subluxation, while a difference of 1 mm or more was classified as subluxation. (a - b ≥ 1) was classified as anterior subluxation. (b - a ≥ 1) was classified as posterior subluxation. a Distance from the posterior margin of the tibia articular surface to the talar dome articular surface. b Distance from the anterior margin of the tibia articular surface to the talar dome articular surfaceBack to article page