The STA operation for the pronated foot in childhood.
The STA operation is a modified subtalar arthroereisis that uses an endoprosthesis manufactured from ultrahigh-molecular-weight polyethylene. It is fashioned into the shape of a small peg and implanted into the dorsal surface of the calcaneus. Its purpose is to eliminate abnormal pronation, correct heel valgus, and produce an increase of the medial longitudinal arch.
D000293:Adolescent; D002111:Calcaneus / Q000601:surgery; D002648:Child; D002675:Child, Preschool; D005413:Flatfoot / Q000601:surgery*; D006801:Humans; D007223:Infant; D011095:Polyethylenes; D019736:Prostheses and Implants
D011095:Polyethylenes