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A series of 142 clubfeet in 113 children were treated by a one-stage medioposterior release for deformity persisting after vigorous physical therapy. The talonavicular joint and hindfoot are released to achieve correct alignment. Long-term good results were seen in 73% of the entire series and in 87% of the idiopathic subgroup.
Between 1971 and 1977, posteromedial release was performed on 47 feet of 30 children 9 months to 4 years of age. At review, full correction of equinus was achieved in 98%, heel varus in 91%, and cavus in 85%, but in only 50% of feet with forefoot adduction. Between 1978 and 1982, surgery was performed on 22 feet of 18 children 3-10 months of age. Recessions of the abductor hallucis and short plantar muscles and fascia were also performed at operation. Correction of equinus, heel varus, and cavus demonstrated results similar to those of the earlier group, but forefoot adduction was also satisfactorily corrected in 91% of feet.
Turco's one-stage posteromedial release with internal fixation has been performed in 51 children with a total of 73 congenital clubfeet since 1973. Thirty-one children (44 feet) followed for 4-12 years were evaluated using the McKay rating system. The occurrence of good and excellent results was 70%. The relationship between these results and angles measured from roentgenograms was analyzed using multiple regression. The results showed a closer relationship to the anteroposterior talocalcaneal angle, the tibiocalcaneal angle, and the MTR angle.
A two-phase study investigated vascularity in idiopathic clubfeet (talipes equinovarus, TEV) undergoing a comprehensive soft tissue release. Great toe O2 saturation was measured by pulse oximetry in a consecutive series of 50 TEV (34 patients) in three foot positions: in feet at rest, in feet in maximal passive correction, and in feet immediately postoperatively. Oxygen saturation was between 94 and 100% in 100% of feet at rest, 95-100% in 90% of feet at maximal passive correction, 95-100% in 98% of feet immediately postoperatively, and 97-100% in 100% of feet 3 weeks' postoperatively. Doppler ultrasound studies were performed on 38 TEV. Dorsalis pedis (DP), posterior tibial (PT), and peroneal (P) pulses were recorded at preoperative resting posture, preoperative maximal passive correction, and 3 weeks postoperatively. At rest, DP pulse was present in 37 of 38 feet, PT pulse was present in all feet, and P pulse was present in 20 of 30 tested (67%), whereas 72% PT, 61% DP, and 50% P pulses were unchanged. Pulse oximetry and Doppler assessment are readily available, noninvasive, and reproducible means of monitoring vascular integrity in TEV.
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Sixty-one idiopathic clubfeet in 46 patients of an older population were treated by one-stage posteromedial release. Follow-up roentgenograms revealed dorsal subluxation of the tarsal navicular in 43% of the clubfeet. This abnormality is probably due to both closed manipulation and casting, and improper positioning of the navicular during posteromedial release. However, dorsal navicular subluxation did not adversely affect the results of treatment observed over the follow-up period that averaged nearly 6 1/2 years. Medial subluxation of the navicular was associated with unsatisfactory results, whereas a centrally located or laterally subluxed navicular generally produced good or excellent results. Other abnormalities of the navicular noted included wedging and avascular necrosis. The long-term consequences of these various abnormalities of the roentgenographic appearance and position of the navicular are not known.
Between 1977 and 1989, 28 clubfeet were operated on, with follow-up ranging from 2 to 13 1/2 years and averaging 79 months. Group I (16 feet; average follow-up 104 months) underwent a modified Turco's posteromedial release. The functional result in this group was satisfactory in general, but approximately one third of this group required a secondary procedure for persistent intoeing or residual metatarsus adductus. Group II (12 feet; average follow-up 45 months) underwent a modified, complete subtalar release of McKay and Simons utilizing the Cincinnati incision. No patient in this second group required a secondary procedure. In our experience, the more complete subtalar release procedure of McKay and Simons resulted in better correction than the Turco posteromedial release. Although follow-up in group II was much shorter than that in group I, we felt that 2 years of minimum follow-up in group II was meaningful, since most of the recurrence or residual deformities were noticed within 18 months after surgery. The Cincinnati incision allowed better exposure and a more complete release. Skin flap necrosis was not a problem in this series.
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