[Surgical treatment of camptodactyly].

Almost all anatomical structures of the hand have been held responsible for non-traumatic, non-paralytic flexion deformity of the proximal interphalangeal joint. Together with Millesi and Flatt, we define camptodactyly as a disorder of flexor-extensor equilibrium in the PIP. This definition determined our therapeutic approach. 59 patients with one or several fingers affected by camptodactyly were followed between 1975 and 1989. In 3 cases, the anomaly was associated with another malformation of the hand and 56 cases, it was isolated. 11 children did not receive any active treatment, but were followed and manipulated. 17 (27 fingers) were treated by static or dynamic splints. 31 (43 fingers) were operated according to the following technique: total anterior tenoarthrolysis leading to recession of the flexor apparatus and lengthening of the skin on the palmar surface of the first phalanx by a rotation flap. This operation was preceded and followed by application of a dynamic extension splint onto the operated finger. Of the 20 fingers treated by manipulations and reviewed, 11 had improved, 7 were stable and 2 had deteriorated. Of the 24 fingers treated by splints and reviewed, 14 had improved, 5 were stable and 5 had deteriorated. Of the 30 fingers operated and reviewed, 30 had improved, 7 were stable and 2 had deteriorated. Although recent anatomical studies tend to indicate that anomalies of the lumbrical muscles are frequent in operated camptodactyly, these studies do not take into account the numerous anomalies of these muscles observed in the general population. The therapeutic conclusion resulting from these studies are also unconvincing. The technique which we propose cannot be applied to every case. The milder forms only require orthopaedic treatment. C camptodactyly in adolescents or adults with joint blocking are only slightly improved by surgery and only require corrective osteotomy. In all other cases, especially in young children, anterior tenoarthrolysis of the finger with cutaneous elongation allows reduction or correction of the deformity.