To assess the outcome of Wilson’s osteotomy of the first metatarsal to correct Hallux Valgus. Two hundred and forty feet in 172 patients who had surgery for pain were reviewed clinically and radiologically. Age ranged from 28 to 82 years (mean 55 years) and duration of follow-up ranged from 2 to 15 years (mean 6 years). A mini external fixation was used to stabilize the osteotomy. The average AOFAS score improved from 51.6 to 89.5 points at the last follow-up. In 96% of the cases, the final outcome was satisfactory as far symptomatic improvement was concerned. A 4% only was dissatisfied with the outcome of the surgery due to metatar-salgia, restricted first metatarsophalangeal joint motion or lack of correction. There were no cases of avascular necrosis of the metatarsal head. We had five cases of delayed union but they didn’t need further surgery. The average preoperative HVA and IMA were 34.80 (range: 180–540) and 15.10 (range: 100–290), while the average postoperative HVA and IMA were 16.10 (range: 70–280) and 7.20 (range: 30–90) respectively. Wilson’s osteotomy as a method of treatment of Hallux Valgus is technically straightforward, effective and with a predictable outcome. We believe that the external fixation offered increased stability at the osteotomy site and could be the reason why patients had a very low incidence of postoperative metatarsalgia and returned to their normal activities faster, thus giving a higher satisfaction rate.
Seventy patients (49%) were under 20 years old, 85 (59%) were men and traffic accident was the main cause of fracture in 58 (41%) patients. 108 patients were treated with GK nail, 14 patients with modified GK nail and 20 patients with S2 nail. All patients were allowed postoperatively full weight bearing with crutches till the fracture healing. Patients were evaluated clinically and radiographs were reviewed every three weeks till fracture healing. Last follow-up was at two years postoperatively. The functional results were evaluated with the Iowa Ankle-Evaluating System.
Complications included one superficial infection at the entry point of the nail and one iatrogenic fracture at the time of the intramedullary nailing. The fractures united at an average of 12.5 weeks. The functional outcome was determined at one and two years postoperatively. There was improvement in the Iowa Ankle-Evaluating System scores with time.