A Swollen Inferior Gemellus Muscle with Hematoma Mimics Sciatica—A Case Report

Co-Yih Siow, Kuan Lin Chen

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Extra-spinal causes of sciatic pain are normally underdiagnosed, as they are extremely uncommon. Although pyriformis syndrome is recognized as one of the main causes of sciatic pain, other pelvic muscles that could cause sciatic pain are often overlooked. The present article describes a swollen inferior gemellus muscle with hematoma initially diagnosed with ultrasonography and later confirmed with magnetic resonance imaging (MRI) scan. Ultrasound revealed a swollen muscle with hematoma between the ischial tuberosity and the medial surface of the greater trochanter of the femur. MRI scan showed edematous change with an increased enhancement of the right inferior gemellus muscle. Ultrasound could be used to diagnose inferior gemellus pathology, but the muscle is easy to miss. Therefore, MRI could be preferred for conditions that impact deep or large areas in confirming inferior gemellus pathology.

Original languageEnglish
Article number1080
Issue number5
Publication statusPublished - May 2022
Externally publishedYes


  • inferior gemellus
  • magnetic resonance imaging
  • sciatica
  • ultrasound

ASJC Scopus subject areas

  • Clinical Biochemistry


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