title: Congenital radioulnar synostosis. Study of a series of 37 children and adolescents.
abstract: The authors report a retrospective series of 37 patients (49 forearms) with congenital radioulnar synostosis followed and treated at Raymond Poincaré University Hospital. This disease is rare, but much more frequent than post-traumatic or humeroradial synostosis. A genetic factor was incriminated in 25% of patients. The clinical study was based on 31 files (40 forearms) with a subjective finding of hypermobility of the wrist in all patients. Shortening of the ipsilateral upper extremity < or = 2 cm was also observed in one third of patients, and a defect of elbow extension was observed in 35%. The radiological study, conducted on 30 files (38 forearms), confirmed the existence of several degrees of fusion within the synostosis and revealed an associated radiological abnormality in 92% of cases. The only valid correlation revealed was between the degree of fusion of the synostosis and the presence of a morphological abnormality of the radial head (r = 0.87), hence the proposal of a new radiological classification essentially based on this element. Functional adaptation was excellent in the majority of cases. The authors propose two main indications for surgery: hyperpronation > or = 90 degrees and bilateral synostosis; in both cases, the disability must be very severe. The operative technique used appeared to be very well adapted to this disease: "reed" radial osteotomy and transverse ulnar osteotomy. No complications or relapses were observed in six operated patients with a mean follow-up of 10 years, with a mean loss of derotation of only 5 degrees.
authors.affiliation: Service d'Orthopédie et de Traumatologie Pédiatriques, Hôpital Universitaire Raymond-Poincaré, Garches.
authors.forename: K
authors.initials: K
authors.lastname: Yammine
authors.forename: A
authors.initials: A
authors.lastname: Salon
authors.forename: J C
authors.initials: JC
authors.lastname: Pouliquen
mesh_terms: D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D010027:Osteotomy; D011183:Postoperative Complications / Q000000981:diagnostic imaging; D011859:Radiography; D011884:Radius / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000601:surgery; D013580:Synostosis / Q000000981:diagnostic imaging / Q000235:genetics* / Q000601:surgery; D014457:Ulna / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000601:surgery