title: Diagnosis and management of posttraumatic piriformis syndrome: a case study.
abstract: OBJECTIVE
  The aim of this study is to describe the clinical management of a young male patient with sciatica symptoms that developed after an avulsion of the ischial tuberosity. This is a rare injury, but complications may occur.
  
  
  METHODS
  A 19-year-old patient developed sciatica 6 months after a football injury. The patient described his symptoms as a shooting pain from the buttock to the lateral part of the foot, along the back of his thigh and calf, sometimes accompanied by paresthesia. Physical examination showed restricted hip range of motion and a positive Bonnet's test. X-ray analysis revealed a bony overgrowth of the right ischial tuberosity.
  
  
  RESULTS
  A treatment plan was designed to decrease the pain level, increase sacroiliac and lumbar joint mobility, and augment muscular extensibility. The patient received 20 treatments over a period of approximately 3 months. Complete recovery was observed 5 months later.
  
  
  CONCLUSIONS
  Although many differential diagnoses were contemplated, it is most likely that changes in muscular tension and gait pattern, resulting from the ischial tuberosity avulsion, contributed to overuse of the piriformis muscle leading to a piriformis syndrome.
authors.affiliation: Département de Chiropratique, Université du Québec à Trois-Rivières, Québec, Canada.
authors.forename: Nancy
authors.initials: N
authors.lastname: Mayrand
authors.forename: Joel
authors.initials: J
authors.lastname: Fortin
authors.forename: Martin
authors.initials: M
authors.lastname: Descarreaux
authors.forename: Martin C
authors.initials: MC
authors.lastname: Normand
mesh_terms: D000328:Adult; D001265:Athletic Injuries / Q000150:complications*; D005538:Football / Q000293:injuries; D050723:Fractures, Bone / Q000000981:diagnostic imaging* / Q000209:etiology / Q000628:therapy*; D006801:Humans; D007512:Ischium / Q000000981:diagnostic imaging / Q000293:injuries*; D008297:Male; D026882:Manipulation, Chiropractic; D011859:Radiography; D012585:Sciatica / Q000175:diagnosis* / Q000209:etiology / Q000628:therapy*; D013577:Syndrome