An Experimental Study on the Talar Deformities of Club Foot in Young Rabbits

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The following experiment was conducted in order to investigate pathological anatomy of the talus in the club foot.Surgical procedures were carried out on the left feet of young rabbits. The procedures consisted of the three methods; tenodesis of the achilles tendon in the position of plantar flexion, transection of the peroneal muscles and lateral capsulotomy of the calcaneocuboid joint. In addition, the dynamic adduction was forced by connecting with the thread between the skin of buttock and forefoot.The deformities of the foot and the talus were studied radiographically and microscopically during 12 weeks after this operation.The results obtained were as follows;1. By this means, rigid club foot deformities were accomplished at 4 weeks after the operation.2. The talar neck deviated medially and downward. The long, wide and high ratios of the talus in the club foot were smaller than those in the control.3. On the medial side of the talar head where the navicular bone was deviated, hyperplasia or metaplasia was seen, on the other hand dysplasia occured on the lateral side.
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