Symptomatic tendons.

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A symptomatic tendon affects more than the local area it finds itself, it "affects the neuromuscular control on the involved side but not the non-involved side. The muscle–tendon unit on the tendinotic side exhibits a lowered temporal efficiency, which leads to altered CNS control. The altered CNS control is then expressed as an adapted muscle activation pattern in the lower leg". - Yu-Jen Chang and Kornelia Kulig