Definition Sciatica refers to pain, weakness, numbness, or tingling in the leg. It is caused by injury to or compression of the sciatic nerve. Sciatica is a symptom of another medical problem, not a medical condition on its own. Alternative Names Neuropathy - sciatic nerve; Sciatic nerve dysfunction Causes, incidence, and risk factors Sciatica occurs when there is pressure or damage to the sciatic nerve. This nerve starts in the spine and runs down the back of each leg. This nerve controls the muscles of the back of the knee and lower leg and provides sensation to the back of the thigh, part of the lower leg, and the sole of the foot. Common causes of sciatica include: Piriformis syndrome (a pain disorder involving the narrow piriformis muscle in the buttocks) Slipped disk Degenerative disk disease Spinal stenosis Pelvic injury or fracture Tumors
Sciatica is pain that radiates along the path of the sciatic nerve and it's branches. Your sciatic nerve is the longest nerve in your body. It runs from your spinal cord to your buttock and hip area and down the back of each leg.
Sciatica is a symptom not a disorder. The pain associated with sciatica signals another problem involving the nerve, the most common being a herniated disc. Another common cause of sciatica is called periformis syndrome. The piriformis muscle extends from the side of the sacrum to the top of the thighbones at the hip joint and passes over the sciatic nerve. When a tight or short piriformis muscle is stretched it can compress and irritate the sciatic nerve. This can happen to athletes who overuse and stretch the piriformis. Other causes of piriformis syndrome are habitually standing with toes turned out, over use without proper warm up, prolonged sitting and obesity. It can also be caused by an injury or in many cases it develops from general wear and tear on ...
Alternative Names Swelling of the ankles - feet - legs; Ankle swelling; Foot swelling; Leg swelling; Edema - peripheral; Peripheral edema Prevention Avoid sitting or standing without moving for prolonged periods of time. When flying, stretch your legs often and get up to walk when possible. When driving, stop to stretch and walk every hour or so. Avoid wearing restrictive clothing or garters around your thighs. Exercise regularly. Lose weight if you need to. References Goldman L. Approach to the patient with possible cardiovascular disease. In: Goldman L, Ausiello D, eds. Cecil Medicine . 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 48.
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