title: [Squeaking as a cause for revision of a composite ceramic cup].
abstract: Squeaking in total hip arthroplasty (THA) has been observed only in hard-on-hard bearings, such as ceramic-on-ceramic or metal-on-metal. We report the case of a patient with a squeaking THA who had undergone multiple femoral head revisions combined with a composite ceramic cup (polyurethane, ceramic). Squeaking started 6 years postoperatively and acetabular revision was necessary to resolve the issue. Secondary deformation of the inlay resulted in clamping of the femoral head and increased friction. This should be considered when assessing and advising patients with squeaking THA when composite ceramic components are involved.
authors.affiliation: Berufsgenossenschaftliche Unfallklinik Murnau, Murnau. Ulf.Schlegel@med.uni-heidelberg.de
authors.forename: U J
authors.initials: UJ
authors.lastname: Schlegel
authors.forename: N
authors.initials: N
authors.lastname: Bishop
authors.forename: R
authors.initials: R
authors.lastname: Sobottke
authors.forename: C
authors.initials: C
authors.lastname: Perka
authors.forename: P
authors.initials: P
authors.lastname: Eysel
authors.forename: M M
authors.initials: MM
authors.lastname: Morlock
mesh_terms: D000077:Acetabulum / Q000601:surgery; D018771:Arthralgia / Q000209:etiology / Q000601:surgery; D002516:Ceramics; D003188:Composite Resins; D019544:Equipment Failure Analysis; D005260:Female; D017276:Friction; D006622:Hip Prosthesis; D006801:Humans; D008875:Middle Aged; D009622:Noise; D011140:Polyurethanes; D011183:Postoperative Complications / Q000601:surgery*; D011474:Prosthesis Design; D017755:Prosthesis Fitting; D012086:Reoperation
chemical_list: D003188:Composite Resins; D011140:Polyurethanes