Abstract
Purpose: We report our expeience with the medial and posteromedial approach to the humerus for plate fixation of fractures of the distal two-thirds of the humerus.
Material: Fifteen patients (eleven men and four women) were treated for fractures (n=13) or nonunion (n=2) situated below the proximal third of the humerus without radial nerve involvement.
Methods: Eight patients were installed in the supine position for median approach between the humerus bundle and the median nerve anteriorly and the ulnar nerve posteriorly. The posteriomedian approach, with the ulnar nerve posteriorly and the brachial triceps anteriorly, was used for seven other patients installed in the prone position. The fixation plate applied to the medial aspect allowed at least six corticals on either side of the fracture line. The patients were immobilised for 45 days. Passive rehabilitation exercises involved the elbow and the shoulder without external rotation. Clinical and x-ray follow-up data were available for all patients.
Results: One patient was lost to follow-up two months after surgery: at this time the x-ray had demonstrated bone healing. Function could not be assessed as the fracture had occurred on the same side as the hemiplegia also caused by the initial trauma. For the fourteen other patients, mean follow-up was 12 months (range 6 – 36). Three patients operated via the median approach presented paraesthesia in the median nerve territory which was regressive in two. There were no neurological complications in the posteromedian approach group. Function was good for elbow and shoulder except for two patients. Bone healing was achieved in all cases.
Discussion: These approaches allowed avoiding dissection of the radial nerve and provided a more aesthetic scar. Several difficulties were encountered with the median approach and reduction was difficult to control. In such cases it is advisable to widen the exposure to avoid stretching the median nerve. These approaches are contraindicated if radial nerve injury is identified preoperatively.
Conclusion: Osteosynthesis of the humerus via a median approach avoids the need for radial nerve dissection. Reduction appears to be easier via the posteromedian approach with less risk than with the median approach.
The abstracts were prepared by Docteur Jean Barthas. Correspondence should be addressed to him at Secrétariat de la Société S.O.F.C.O.T., 56 rue Boissonade, 75014 Paris.
