What Is the Peroneus Brevis Tendon?
The peroneus brevis tendon is a band of fibrous connective tissue that attaches to the peroneus brevis muscle in the lower leg. Like any tendon, it connects its attaching muscle to a specific bone or bones, thus acting like a lever that translates actions initiated by muscle contractions into movements at one or more joints. In this case, the peroneus brevis tendon connects the muscle, which begins at the fibula bone in the lower leg, to the foot and therefore produces motion at the joint it crosses: the ankle. Originating on the bottom two thirds of the lateral or outer side of the fibula, which is the smaller bone in the lower leg lateral to the tibia, the peroneus brevis is one of three peroneus muscles. The peroneus longus and tertius are also found on the outside of the lower leg, above the bony prominence on the outside of the ankle known as the lateral malleolus. All three descend to cross the ankle joint.
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