Occult fracture-subluxation of the midtarsal joint.

In four women with occult fracture-subluxation of the midtarsal joint incurred in trivial accidents, the correct diagnosis was made promptly, assisted in one case by bone scintigraphy. Treatment was conservative, consisting of cast immobilization for six to eight weeks and a weight-bearing restriction. At the minimum follow-up time of 24 months, the functional results were rated good in three patients and fair in one. In the patient with a fair result, a compression fracture of the posterior facet of the calcaneus was diagnosed retrospectively. An occult fracture-subluxation of the mid-tarsal joint can be treated effectively by conservative means.