excessive pressure on a nerve from surrounding tissues. The pressure can disrupt the nerve’s function and cause symptoms including pain, tingling, numbness or weakness.

a condition in which the piriformis muscle, located in the buttock, spasms and presses on the sciatic nerve. It can cause pain, numbness or tingling down the back of the leg and may extend into the foot.

an overuse injury along the inside part of the elbow, often caused by overhand throwing activity. Symptoms include pain, swelling and limited range of motion.

pain, weakness, numbness and tingling due to a pinched nerve root in the spinal column. It often occurs when the space near the nerve root becomes too small because of a herniated disc, bone spurs or stenosis (narrowing of the spinal column).

the extent to which a joint can move. When injured or arthritic, a joint may display limited range of motion, usually involving flexion (bending) and extension.

a physical disorder caused by overuse or improper use, often found in but not limited to the fingers, hands and wrists. This injury can involve muscles, tendons, ligaments, nerves or joints.

injury to the group of muscles and tendons surrounding the shoulder joint. Can cause a dull shoulder ache that often worsens when lying on the involved side. Occurs in people whose work or activity requires repetitive overhead motions.

a joint between the sacrum and the ilium bones of the pelvis, connected by strong ligaments. The sacrum creates a base for the spine and is supported on each side by an ilium.

the triangular bone formed by two fused vertebrae at the base of the spine between the hip bones. Provides support for the weight of the upper body.

pain from a compressed sciatic nerve, the largest nerve in the body, which branches from your lower back through your hips and buttocks and down each leg. It is usually due to a herniated disk, bone spur, stenosis (narrowing of the spinal column) or spasming of the piriformis muscle.