title: Fatigue fracture of the hinge pin in a semi-constrained total knee arthroplasty: a case report.
abstract: Material failure is a rare complication in total knee arthroplasty (TKA). This case report shows a fatigue fracture of the hinge pin as a consequence of a postoperative persisting valgus deviation in a semi-constrained TKA.
authors.affiliation: Department of Orthopaedic Surgery, University of Regensburg, Kaiser-Karl-V. Allee 3, 93077 Bad Abbach, Germany. hrspringorum@web.de
authors.forename: H R
authors.initials: HR
authors.lastname: Springorum
authors.forename: C
authors.initials: C
authors.lastname: Luring
authors.forename: J
authors.initials: J
authors.lastname: Beckmann
authors.forename: J
authors.initials: J
authors.lastname: Schaumburger
authors.forename: J
authors.initials: J
authors.lastname: Grifka
authors.forename: M
authors.initials: M
authors.lastname: Tingart
mesh_terms: D000368:Aged; D019645:Arthroplasty, Replacement, Knee / Q000009:adverse effects* / Q000379:methods; D001858:Bone Nails / Q000009:adverse effects*; D020878:Device Removal; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007720:Knee Prosthesis; D020370:Osteoarthritis, Knee / Q000000981:diagnostic imaging / Q000601:surgery*; D011474:Prosthesis Design; D011475:Prosthesis Failure; D011859:Radiography; D016059:Range of Motion, Articular / Q000502:physiology; D012086:Reoperation / Q000379:methods; D018570:Risk Assessment; D013314:Stress, Mechanical; D013997:Time Factors; D016896:Treatment Outcome