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Avoid putting long-term pressure on the back or side of the knee. Treat injuries to the leg or knee right away. If a cast, splint, dressing, or other pressure on the lower leg causes a tight feeling or numbness, call the health care provider. [12] Avoid crossing legs; Move around actively and frequently; Wear knee protections if working on knee
Symptoms may include pain and numbness in the buttocks and down the leg. [2] [3] Often symptoms are worsened with sitting or running. [3] Causes may include trauma to the gluteal muscle, spasms of the piriformis muscle, anatomical variation, or an overuse injury. [2] Few cases in athletics, however, have been described. [2]
Upper motor neuron syndrome (UMNS) is the motor control changes that can occur in skeletal muscle after an upper motor neuron lesion. Following upper motor neuron lesions, affected muscles potentially have many features of altered performance including: weakness (decreased ability for the muscle to generate force)
Examples of this include twitching and spastic tendencies, which indicate disease of the upper motor neurons and the lessening or loss of control ordinarily exerted by higher brain centers of lower neural pathways. [citation needed] Spinal cord injury is the most common cause of hyperreflexia.
Spastic hypertonia involves uncontrollable muscle spasms, stiffening or straightening out of muscles, shock-like contractions of all or part of a group of muscles, and abnormal muscle tone. It is seen in disorders such as cerebral palsy, stroke, and spinal cord injury. Rigidity is a severe state of hypertonia where muscle resistance occurs ...
The cause of spasticity is thought to be where an imbalance occurs in the excitatory and inhibitory input to α motor neurons caused by damage to the spinal cord and/or central nervous system. The damage causes a change in the balance of signals between the nervous system and the muscles, leading to increased excitability in muscles.