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[Congenital tarsal synostosis].

Tarsal coalition results from the fusion of at least two tarsal bones. The clinical and radiological pictures depend on the anatomic location of the coalition. Calcaneonavicular and talonavicular coalitions are the most frequent features which may result in peroneal spastic flat foot; however they are symptomless in most cases. Tarsal coalitions are usually evident on plain X-ray films using appropriate incidences. In selected cases, partial talocalcaneal coalition requires CT scan or MRI. No treatment is needed for asymptomatic conditions. Painful spastic flat foot must be treated conservatively by limiting sport activity as a first step treatment. In case of persistent symptoms, cast with correction of deformities under general anesthaesia is recommended. Surgery is needed only in case of failure of previous treatment, requiring resection of the bony bridge and sometimes triple foot arthrodesis.

Child↗

The use of a proximally based posterior interosseous adipofascial flap to prevent recurrence of synostosis of the elbow joint and forearm.

We report on four children in whom a proximally based, posterior interosseous artery adipofascial flap was used as an adjunct to surgical resection of synostoses of the forearm and elbow. Three traumatic radio-ulnar and one congenital humero-radial synostoses were treated. The postoperative pronation to supination arc of motion was excellent in all of the traumatic cases and fair in the congenital case.

Adolescent↗

Surgical treatment of congenital metacarpal synostosis of the ring and little fingers.

Fifteen hands with congenital metacarpal fusions were treated operatively by osteotomy combined either with the use of a silicone block or a distraction device. The aim of the silicone block was to separate the fused metacarpals, but it was buried in the metacarpals at follow-up, with recurrence of fusion. By the distraction technique, 13 mm of lengthening was obtained. The average length of the little metacarpal was 88% of that of the long finger metacarpal. Both methods were effective in correcting the abduction deformity of the little finger by a mean of 34 degrees, and increasing the range of motion of the metacarpophalangeal joint to 28 degrees of active flexion. Although the distraction method took longer than the silicone block method, the final appearance of the hand was better.

Child↗