title: Mid-term results of 155 patients treated with a collum femoris preserving (CFP) short stem prosthesis.
abstract: Short stem prostheses that preserve the femoral neck are becoming more and more popular. The CFP (collum femoris preserving) has been introduced especially for the treatment of younger patients. However, information about remodelling, complications and learning curve are thus far rare. We present a retrospective study of 155 patients (average age 59.3 ± 9.9 years) who underwent total hip replacement with the CFP prosthesis. Follow-up was obtained 74.3 ± 9.4 months postoperatively. The Harris hip score revealed excellent and good results in 96%. One stem had to be exchanged due to aseptic loosening revealing a survival rate of 99% and 100% for stem and cup, respectively. Radiological analysis showed typical patterns of remodelling with appearance of cortical thickening predominantly in the distal part of the prosthesis. Implant related revision rate was <1%, with further complication rate independent of the surgeon's individual experience. With regard to outcome, survivorship and complication rate, the medium-term results of the CFP prosthesis are promising.
authors.affiliation: Endoclinic Hamburg, Hamburg, Germany. briem@uke.de
authors.forename: Daniel
authors.initials: D
authors.lastname: Briem
authors.forename: Michael
authors.initials: M
authors.lastname: Schneider
authors.forename: Nicole
authors.initials: N
authors.lastname: Bogner
authors.forename: Nadine
authors.initials: N
authors.lastname: Botha
authors.forename: Matthias
authors.initials: M
authors.lastname: Gebauer
authors.forename: Thorsten
authors.initials: T
authors.lastname: Gehrke
authors.forename: Bernd
authors.initials: B
authors.lastname: Schwantes
mesh_terms: D000328:Adult; D000368:Aged; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation* / Q000379:methods / Q000534:rehabilitation; D005260:Female; D005272:Femur Neck / Q000601:surgery*; D006304:Health Status; D006621:Hip Joint / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery; D006622:Hip Prosthesis; D006801:Humans; D007592:Joint Diseases / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D016348:Osseointegration; D017060:Patient Satisfaction; D011474:Prosthesis Design; D011475:Prosthesis Failure; D011859:Radiography; D016059:Range of Motion, Articular; D012189:Retrospective Studies; D016896:Treatment Outcome