When the piriformis muscle shortens or spasms due to trauma or overuse, it can compress or strangle the<unk> nerve beneath the muscle. Generally, conditions of this type are referred to as nerve entrapment or as entrapment neuropathies; the particular condition known as piriformis syndrome refers to<unk>  symptoms not originating from spinal roots and/or spinal disc compression, but involving the overlying piriformis muscle. In 17% of an assumed normal population the<unk> nerve passes through the piriformis muscle, rather than underneath it; however, in patients undergoing surgery for suspected piriformis syndrome such an anomaly was found only 16.2% of the time leading to doubt about the importance of the anomaly as a factor in piriformis syndrome. Some researchers discount the importance of this relationship in the etiology of the syndrome. MRI findings have shown that both hypertrophy (unusual largeness) and atrophy (unusual smallness) of the piriformis muscle correlate with the supposed condition. Piriformis syndrome may also be associated with direct trauma to the piriformis muscle, such as in a fall or from a knife wound.
medical cause of Sciatica
medical cause of Piriformis syndrome
symptom of Sciatica
causes of Sciatica
symptom of Legius syndrome
symptom of Carpal tunnel syndrome
symptom of Ankylosing spondylitis
complications of Patellar dislocation