HIP AND PELVISObturator internus muscle abscess in a child: a case reportBansal, Manish; Bhaliak, Vijay; Bruce, Colin E.Author Information Alder Hay Hospital, Liverpool, UK Correspondence to Dr Manish Bansal, MBBS, MS (ORTH), MRCS, 51, Rodbourne Road, Birmingham, B17 0PN, UK Tel: +44 794 9805894; e-mail: [email protected] Journal of Pediatric Orthopaedics B: September 2008 - Volume 17 - Issue 5 - p 223-224 doi: 10.1097/BPB.0b013e3283068875 Buy Metrics Abstract The authors report a case of abscess in the obturator internus muscle, which is a rare occurrence. It was managed with antibiotics and surgical intervention was not necessary. Pyomyositis involving the muscles around the hip needs to be differentiated from septic arthritis and transient synovitis of the hip because these pathologies more commonly afflict this joint. However, when present, abscesses usually affect the psoas or the glutei. Only rarely is the obturator internus involved by the abscess. Magnetic resonance imaging is the imaging modality of choice to image the obturator internus and to ascertain the diagnosis. Lack of awareness of the existence of this condition leads to a delay in the correct diagnosis. © 2008 Lippincott Williams & Wilkins, Inc.