Abstract
Appropriate clinical studies that address the efficacy and effectiveness of orthotic treatment in general are difficult to identify, particularly in postoperative treatment of congenital clubfeet. Clinical experience, however, seems to necessitate casting and splinting for a certain time after surgical correction to prevent relapses.
Although treatment recommendations range from three months to two years after surgery, duration and intensity of orthotic therapy may depend on the severity of the clubfoot deformity, underlying disorders and the surgeon’s experience.
Knee-ankle-foot orthoses with a knee flexion of 90 are most commonly prescribed after the removal of postoperative casts. They allow appropriate abduction of the foot, and daily stretching exercises that can be performed by the parents in combination with physical therapy. Most splints are made of polyethylene or polypropylene, and current designs include static or rigid ankle and forefeet.
Some authors also recommend significantly smaller orthoses that are used in metatarsus varus treatment: Denis-Browne bars and orthoses with locking or elastic swivel joints that allow the hindfoot and forefoot components to be adjusted in relation to each other. However, since they do not have a moulded heal, they tend to slip off and cannot prevent recurrence of the equinus. Their application is also restricted to pre-walking infants unless considered for use at night.
Outflare shoes (anti-varus shoes) also keep the forefoot in the “corrected position”. To obtain a necessary 3-point correction, however, certain construction principles are mandatory. The hindfoot must be kept in high heel cup and the first metatarsal is pushed laterally against the counter-pressure that is exerted on the cuboid by the most distal and lateral part of the heel cup.
After introduction of continuous passive motion (CPM) into the treatment of congenital clubfeet, some groups have published encouraging results. Although the advocates of this treatment state that the duration of plaster cast immobilisation can be shortened after surgery, further evaluation of outcome and cost-effectiveness of this approach is necessary.
The abstracts were prepared by David P. Davlin. Correspondence should be addressed to him at the Orthopedic Clinic Bulovka, Budínova 2, 18081 Prague 8, Czech Republic.
