Brachial palsy is a weakness or paralysis of the arm due to brachial plexus injury. The brachial plexus is a network of nerves near your neck that connect your spinal cord to your arms. These nerves ...

What Is Upper Limb Spasticity? Upper limb spasticity is a condition that affects the way you move your arms. It makes your muscles stiff and flexed. Sometimes, your arms will twitch or move in a way ...

The arm extends from the shoulder to the wrist, including the upper arm and forearm. Different muscles may work together in intricate ways to help the arm, wrists, fingers, and hands function. Knowing ...

Scientists have made strides turning stem cells into motor neurons, but a motor neuron by itself is not much use—it’s only when it innervates a muscle that it can get things moving. Now, for the first ...

The muscular system works to control the movement of our body and internal organs. Muscle tissue contains something called muscle fibers. Muscle fibers consist of a single muscle cell. They help to ...

You’re relaxing on the sofa when suddenly your eyelid starts twitching. Or perhaps it’s a muscle in your arm, your leg, or your foot that begins to spasm – sometimes for a few seconds, sometimes for ...