The extensor carpi radialis longus (ECRL) is a muscle in your forearm that works in conjunction with the other muscles and tendons in your arm to help move your wrist and hand. It is in the same ...

The extensor retinaculum refers to the set of ligaments inside the ankle that connect the tibia and fibula, which are the bones of the lower leg. The Achilles tendon and tissue inside the sole of the ...