Abstract
Introduction: The Ilizarov external fixator has theoretical advantages over conventional revision surgery for the treatment of recurrent clubfoot deformity. The aim of this study was to assess the outcome of such treatment.
Materials & Methods: Patients were reviewed clinically and completed extensive questionnaires documenting pain, function and satisfaction before and after the frame at a mean follow-up of 44 months (range 14–131). All patient notes and radiographs were reviewed.
Results: There were 42 frames applied to 40 feet in 31 patients. Deformity was idiopathic in 29 cases. Pain and function scores after treatment improved in 67% and 72% of cases respectively. A subjective increase in stiffness was noted in 46%. Patient satisfaction with outcome was 61%. Pain and function scores were not significantly different in stiff versus non-stiff feet. The overall recurrence rate was 44%; these feet had been treated with the Ilizarov fixator at a younger mean age (7.8 years) than those feet which did not recur (12.6 years). Recurrence was highest in the idiopathic group (59%) compared with the constriction band group (17%) and the neuromuscular/syndromic group (0%), despite the fact that the idiopathic group were older overall. 71% of recurrences experienced significant pain post treatment, compared with only 36% of non-recurrent feet. Functional ability was, however, similar in the two groups. Further surgical treatment has currently been necessary in 6 patients, including 4 repeat Ilizarov frames. Complications included almost universal minor pin-site infections, flexion contractures of the toes in 5 feet and skin ulceration in 2 feet, 1 requiring a muscle flap.
Conclusions: Treatment of the relapsed clubfoot with the Ilizarov fixator can improve the appearance of the foot, correlating with improvement in pain and function. Risks include recurrence, particularly in young, idiopathic feet, an increase in stiffness of the ankle, which has implications for future surgery, and other complications.
Mr James Robb – BSCOS Honorary Secretary, Mr Geoffrey Mill – Host of the meeting, Mr Robin Paton – Editorial Secretary. Correspondence should be sent to BSCOS, c/o Royal College of Surgeons, 35-43 Lincoln’s Inn Fields, London, WC2A 3PN.
