title: Bilateral piriformis syndrome after total hip arthroplasty.
abstract: We present the case of a 39-year-old man with bilateral piriformis syndrome 4 and 6 years after two cementless total hip arthroplasties, respectively. During surgical exploration, each sciatic nerve was found to be entrapped by a tense piriformis muscle and hypertrophic posterior hip capsule. The sciatic-type pain was relieved after sectioning each piriformis muscle with external neurolysis. This is the first reported case of piriformis syndrome after total hip arthroplasty.
authors.affiliation: Department of Orthopaedics, Shimane Medical University, Izumoshi, Shimaneken, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Uchio
authors.forename: U
authors.initials: U
authors.lastname: Nishikawa
authors.forename: M
authors.initials: M
authors.lastname: Ochi
authors.forename: N
authors.initials: N
authors.lastname: Shu
authors.forename: K
authors.initials: K
authors.lastname: Takata
mesh_terms: D000328:Adult; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects* / Q000379:methods; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D009135:Muscular Diseases / Q000209:etiology* / Q000503:physiopathology; D009408:Nerve Compression Syndromes / Q000000981:diagnostic imaging / Q000209:etiology* / Q000601:surgery*; D011859:Radiography; D012584:Sciatic Nerve; D013577:Syndrome; D013848:Thigh / Q000294:innervation*