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Figures 43a and 43b show the clinical photographs of a 4-month-old child with bilateral popliteal pterygium. The fixed knee contractures measure 100 degrees bilaterally. What future treatment is most likely to successfully correct this deformity?
Serial casting of both knees weekly
Physiotherapy and dynamic splinting
Soft-tissue releases of the knees, including Z-plasties of skin, excision of fibrotic bands, hamstring lengthenings, and posterior knee capsulotomies
Femoral shortening osteotomies combined with soft-tissue releases of the knees (Z-plasties of skin, excision of fibrotic bands, hamstring lengthenings, and posterior knee capsulotomies)
Gradual correction with a circular external fixator without soft-tissue release
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