12/24/2023 0 Comments Acquired flat foot![]() These muscles then contribute to the progressive deformity seen with this disorder. When the posterior tibial tendon fails, the other muscles and tendons become relatively overpowering. Under normal circumstances, the result is a balanced ankle and foot with normal motion. Several muscles and tendons around the ankle and foot act to counter-balance the action of the posterior tibial tendon. The ligaments at the inside of the ankle also can become stretched and contribute to the progressive flattening of the arch. In addition to tendons running across the ankle and foot joints, a number of ligaments span and stabilize these joints. The posterior tibial tendon plays a central role in maintaining the arch of the foot when you stand and walk. This muscle then turns into the posterior tibial tendon, which passes behind the inside of the ankle and attaches to the navicular bone along the instep of the foot. The posterior tibial muscle originates on the bones of the lower leg (tibia and fibula). ![]() This problem may progress from early stages with pain and swelling along the posterior tibial tendon to complete arch collapse and arthritis throughout the hindfoot (back of the foot) and ankle. It has many other names such as posterior tibial tendon dysfunction, posterior tibial tendon insufficiency, and dorsolateral peritalar subluxation. Adult acquired flatfoot deformity (AAFD) is a progressive flattening of the arch of the foot that occurs as the posterior tibial tendon wears down. ![]()
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