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The thicker side of the piriformis is medial (closer to the center of the body). The function of the piriformis is as an external thigh rotator. When the hip is extended, such as standing, the piriformis rotates the thigh outwards. When the hip is flexed, such as sitting, the piriformis abducts the hip (spreading the legs).
Pain near the rear of your hip could be a sign of sciatica, a ligament injury, or one of the numerous small muscles on the back outer portion of your hip socket (collectively called external ...
Sciatica is pain going down the leg from the lower back. [1] This pain may go down the back, outside, or front of the leg. [3] Onset is often sudden following activities such as heavy lifting, though gradual onset may also occur. [5] The pain is often described as shooting. [1] Typically, symptoms are only on one side of the body. [3]
Patients also frequently report persistent or intermittent pain or dysthesias in posterior hip, buttocks, or thigh. [4] Unlike discogenic sciatica (caused by the spine), patients with deep gluteal syndrome report exacerbation of symptoms with pressure in the buttocks, such as tenderness or pain on deep palpation, or pain on prolonged sitting.
The muscle extends to each side of your body and is used in almost every movement of the lower body. The sciatic nerve, which is the longest nerve in a person’s body, runs underneath the piriformis.
Pain caused by compression or irritation of the sciatic nerve by a problem in the lower back is called sciatica. Common causes of sciatica include the following lower back and hip conditions: spinal disc herniation, degenerative disc disease, lumbar spinal stenosis, spondylolisthesis, and piriformis syndrome. [5]