J Korean Pain Soc.  1995 Nov;8(2):341-346.

Four Cases of the Piriformis Syndrome Treated by Trigger Point Injection on the Piriformis Muscle

• Park JS
• Song CW
• Kim JW
• Shin DY
• Hong KH

Abstract

Piriformis Syndrome is characterized by pain of the low back, groin, perineum, buttock, hip, posterior thigh, leg and foot. Symptoms are aggravated by sitting, prolonged combination of hip flexion, adduction, the medial rotation, or by activity. In addition, patient may cornplain of painful swelling of the limb and sexual dysfunction-dyspareunia in female, and impotence in male. It currently appears that three specific conditions may contribute to the piriformis syndrome (a) myofascial pain, (b) nerve and vascular entrapment; (c) dysfunction of the sacroiliac joint. The important keys of diagnosis are history and physical examination. There is no known objective diagnostic method. We deseribed the clinical features of four cases of piriformis syndrome and reviewed foreign literature.

Keyword

Entrapment; Myofascial; Nerve; Piriformis syndrome; Vascular

MeSH Terms

Buttocks
Diagnosis
Erectile Dysfunction
Extremities
Female
Foot
Groin
Hip
Humans
Leg
Male
Perineum
Physical Examination
Piriformis Muscle Syndrome*
Sacroiliac Joint
Thigh
Trigger Points*