J Korean Orthop Assoc.  1977 Dec;12(4):755-758. 10.4055/jkoa.1977.12.4.755.

Leprous bone Change of Ankle Joint: A Clinical Observation of 26 Cases


The leprous involvement of the ankle joint and the upper surface of the talus is said to be a rare entity and this is in sharp contract to the Charcot joint of other causes in which the ankle involvement is relatively common. This can partly be explained by the concept that the articular branch of tibial nerve to the ankle joint is usually spare din leprosy, although the fibular nerve is affected around the knee level. During the survey of nearly 3000 leprous patients in the National Leprosy Center we selected 26 cases with obvious bone change of the ankle joint and the clinical study on these 26 cases was made with the following results. 1. The 26 cases consisted of 15 males and 11 females 2. Average age of the patients was 56 years and those over 50 years numbered 20(77%)and undre 39 years of age there was only one involvement. 3. Ankle destruction can be classified according to the causative factors attributable to its occurrence as follows: destruction of ankle joint following fracture of which four were Potts type and eight hyperdorsif-lexion injury: those following idiopathic arthritis in four, and those following subtalar incongruity due to calcaneal flattening in ten. 4. The results of this study which clarify the pathogenesis of ankle involvement in leprous patients may offer reliable preventive measures for each case of ankle destruction.

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