梨状肌综合征可刺激、压迫坐骨神经痛，引起下肢疼痛、麻木、无力等症状，与腰椎间盘源性腰腿痛症状相似，容易误诊。
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Piriformis syndrome occurs when the piriformis muscle spasms and irritates or compresses the sciatic nerve. It often causes symptoms similar to sciatica, though it is not caused by a spinal problem like sciatica is.
梨状肌综合征是梨状肌痉挛、激惹和压迫坐骨神经所引发的病症。它所引起的症状与坐骨神经痛相似，尽管不象坐骨神经痛一样由脊柱疾病引起。
The piriformis is a small muscle located deep in the buttock, behind the gluteus maximus. It runs diagonally from the lower spine to the upper surface of the femur, with the sciatic nerve running underneath or through the muscle. The piriformis muscle helps the hip rotate, turning the leg and foot outward.
梨状肌是位于臀部深层的一块小肌肉，在臀大肌深面。它从脊柱底端斜向股骨近端的表面，坐骨神经从该肌下方或中间穿过。梨状肌帮助髋关节旋转，使下肢和足外旋。
As a result of overuse, injury, or strain, the piriformis muscle can tighten, swell, or spasm. Sports that involve repetitive forward movement of the legs, or problems in surrounding joints like the sacroiliac joints are typical causes of piriformis syndrome.
当梨状肌过度使用、损伤或拉伤，会紧张、肿胀或痉挛。那些反复作下肢向前活动的运动以及象骶髂关节等关节周围的疾患，常常引起梨状肌综合征。
The location of the piriformis muscle near the sciatic nerve means that when the piriformis muscle is irritated or injured, it can affect the sciatic nerve as well.
梨状肌的位置与坐骨神经相邻，意味着当梨状肌受激惹或受伤，也会影响到坐骨神经。
Symptoms of piriformis syndrome include tenderness and pain in the buttock area, accompanied by sciatica-like pain, numbness, and weakness that runs down the back of the thigh, calf, and foot. Pain from piriformis syndrome is often worse when walking up stairs, after sitting, or while walking or running.
梨状肌综合征的症状包括臀部的压痛和疼痛，伴有坐骨神经痛相似的沿大腿后方、小腿和足的疼痛、麻木、乏力。由梨状肌综合征引起的疼痛往往在上楼梯、坐过以后、行走或跑步时加重。
Piriformis syndrome is often confused with other conditions, especially lumbar spine conditions. Attaining a proper diagnosis of piriformis syndrome is important when considering treatment for low back and leg pain.
梨状肌综合征常与其它疾病相混淆，尤其是腰椎疾患。当考虑治疗腰腿痛时，正确诊断出梨状肌综合征是非常重要的。
（胡佰文 译）
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