title: The Stanmore knee arthrodesis prosthesis.
abstract: Knee arthrodesis is most commonly performed for failed total knee arthroplasty. Conventional arthrodesis techniques are associated with a high incidence of complications and are unsuitable in cases with extensive bone loss. We report our medium-term results using a custom-made cemented knee arthrodesis prosthesis in 10 patients with a mean follow-up of 56.4 months (range, 15-199 months). The prosthesis was implanted as a 1- or 2-stage procedure for infected revision knee arthroplasty or tumor endoprosthesis in 9 patients and as a primary procedure in 1 patient with angiosarcoma involving the knee extensor mechanism. The average combined femoral and tibial bone deficit was 170 mm (range, 56-220 mm). Implant survivorship was 90%. All patients with retained prosthesis had no evidence of residual infection or loosening and were able to mobilize independently. One prosthesis was revised though retained following a prosthetic fracture, and 1 patient underwent above-knee amputation for uncontrolled infection. We conclude that the Stanmore knee arthrodesis prosthesis provides reliable fusion in an otherwise difficult-to-treat group of patients.
authors.affiliation: London Sarcoma Unit, Royal National Orthopaedic Hospital, Stanmore, Middlesex, UK.
authors.forename: William
authors.initials: W
authors.lastname: Bartlett
authors.forename: Sridhar
authors.initials: S
authors.lastname: Vijayan
authors.forename: Robin
authors.initials: R
authors.lastname: Pollock
authors.forename: John
authors.initials: J
authors.lastname: Skinner
authors.forename: Gordon
authors.initials: G
authors.lastname: Blunn
authors.forename: Steve
authors.initials: S
authors.lastname: Cannon
authors.forename: Timothy
authors.initials: T
authors.lastname: Briggs
mesh_terms: D000328:Adult; D000368:Aged; D001172:Arthritis, Rheumatoid / Q000601:surgery; D001174:Arthrodesis / Q000295:instrumentation* / Q000379:methods*; D019645:Arthroplasty, Replacement, Knee / Q000009:adverse effects; D001859:Bone Neoplasms / Q000601:surgery*; D005260:Female; D006394:Hemangiosarcoma / Q000601:surgery*; D006801:Humans; D007720:Knee Prosthesis; D008297:Male; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000601:surgery; D012516:Osteosarcoma / Q000601:surgery; D016459:Prosthesis-Related Infections / Q000601:surgery*; D012086:Reoperation; D012189:Retrospective Studies; D017211:Treatment Failure; D016896:Treatment Outcome