Flexion contractures of the knee associated with popliteal webbing.

Five children with popliteal webbing and flexion contractures of the knees are described. When their associated anatomical abnormalities are considered, classification into two distinct syndromes, multiple pterygium and popliteal pterygium, is possible and of importance in genetic counseling. Soft tissue surgical corrections of the flexion contractures were undertaken in each case. The operative technique, local abnormalities, and orthopaedic management are discussed.