Abstract
Purpose of study: To report the use of a forearm fascial strip to repair the annular ligament and treat late diagnosed or irreducible Monteggia fracture.
Methods: Through Boyd’s approach nineteen patients with Monteggia fractures were treated with a technique to reconstruct the annular ligament using forearm fascia, retaining its proximal attachment to the ulna. The radial head was dislocated and the fascial strip wound around the neck of the radius. After reducing the radial head, forearm rotation was checked. The strip was sutured to the residual annular ligament on the proximal ulna after correction of any ulna deformity. In late diagnosis, the ulna deformity was managed with ulna lengthening of approximately 0.5 cm and stabilization with a 4- or 5- hole semi-tubular AO plate. The stability of the radial head was then assessed using intra-operative fluoroscopy.
Results: Stability of the radial head was achieved in all cases. According to the Anderson classification, the final outcome was excellent in ten cases satisfactory in eight cases and unsatisfactory in one late diagnosed patient with an associated radioulnar synostosis secondary to a compartment syndrome. There were no failures. Two radiocapitellar K-wires broke while in plaster in the initial period, so the use of a K wire was subsequently abandoned.
Conclusions: We have found this technique to be reliable for stabilizing the proximal radioulnar joint. The length of the incision is less than that required for the Bell Tawse (triceps tendon) technique and permits a tourniquet on the upper arm. Poorer results were achieved with delay in diagnosis beyond 6 months.
Patients must be warned of potential reduction of forearm rotation.
Correspondence should be addressed to: Mr J. B. Hunter, BSCOS, c/o BOA, The Royal College of Surgeons, 35–43 Lincoln’s Inn Fields, London WC2A 3PE.
