J Korean Acad Rehabil Med.  2009 Feb;33(1):131-134.

Obturator Internus Myofascial Pain: A Cause of Undiagnosed Chronic Pelvic Pain Syndrome: Case reports

• Kim SH
• Kim CH
• Lee JH
• Shin YS

Abstract

Chronic pelvic pain is difficult to diagnose and usually has a poor outcome. However, if it was identified early it might have a better prognosis. We treated three patients whose trigger points in obturator internus were diagnosed as origin of myofascial pain. The first patient complained of coccygodynia with pain that radiated up his left leg when walking. The second patient had coccygeal pain that radiated to the left thigh area. The last patient was troubled with coccygeal and pelvic pain at anytime. In all of the cases MRI studies of the lumbar spine and pelvis were unrevealing. Electrodiagnostic studies were normal. The impression was that the patients had the myofascial pain syndrome, therefore injections with local anesthetics and cortisone at the myofascial pain originated in obturator internus. Although each of the patients had different symptoms, they all had a good response to treatment.

Keyword

Pelvic pain; Myofascial pain syndrome; Obturator internus muscle

MeSH Terms

Anesthetics, Local
Cortisone
Humans
Leg
Myofascial Pain Syndromes
Pelvic Pain
Pelvis
Prognosis
Spine
Thigh
Trigger Points
Walking
Anesthetics, Local
Cortisone