Abstract
Introduction: Most physicians agree that initial treatment for a newborn child with clubfoot should be nonoperative. Some children with rigid deformities, however, may need a soft tissue release operation at an early age. The optimal timing of such surgery and for whom remain controversial questions. We prospectively followed patients treated in our clinic under temporal protocol and analyzed results in order to answer these questions.
Methods: From 1979 to 1989, 132 infants with 185 club-feet visited the Hokkaido Univ. before they were three months old. Eighty eight patients with 124 feet were followed over a 10 year period. The averaged follow-up period was 15.2 years. Corrective casts were applied for no longer than 3 months. If the lateral tibio-calcaneal (TC) angle became less than 90°, a Denis Browne splint was used. If this angle was still larger than 90°, postero-lateral release was performed within a month after casting. Surgery was also performed for children whose deformities continued increasing after conservative treatment. McKay’s scoring system was used to evaluate the final clinical results. The results of patients needing major revision surgery were evaluated “failure”.
Results: Forty-nine feet were treated conservatively. Of these 35 were evaluated as good or excellent and seven were evaluated as poor or failure. Forty-three feet were underwent surgery before one year of age; an additional 32 feet underwent surgery after one year of age. Thirty-three feet were evaluated good or excellent and 19 feet were evaluated as poor or failure. At 6 months of age the lateral TC angle of the patients treated non-operatively and evaluated as good or excellent was 68.4 ± 14.3° (Mean ± S.D.), and the lateral TC angle of patients who underwent surgery after one year of age and patients who were treated non-operatively but evaluated as poor or failure was 80.0 ± 9.2°. There are statistically significant difference between these two groups. The age at surgery of patients evaluated as good or excellent was 12.6 ± 12.4 months old, and that of patients evaluated as poor or failure was 5.1 ± 3.0 months old.There are also statistically significant difference between these two groups.
Conclusion: Our results suggest that surgery is indicated for patients whose TC angle at 6 months of age is greater than 70°, and that the optimal timing for soft tissue release is later than 8 months of age.
The abstracts were prepared by Professor Jegan Krishnan. Correspondence should be addressed to him at the Flinders Medical Centre, Bedford Park 5047, Australia.
