title: Short stem metaphyseal-engaging femoral implants: a case-controlled radiographic and clinical evaluation with eight year follow-up.
abstract: A prospective comparison of 148 hips in 139 consecutive patients treated with an off-the-shelf uncemented metaphyseal engaging (91-105 mm) stem and 69 hips in 61 patients treated with a custom uncemented metaphyseal engaging short stem was conducted to evaluate the mid-term clinical and radiographic results of an off-the-shelf metaphyseal-engaging short stem implant. All implants were radiographically stable with proximal bony in-growth. There was no significant difference in post-operative HHS (P <. 001) or WOMAC scores (P < .001) between cohorts. An off-the-shelf short femoral stem designed to fit and fill the metaphysis provides reliable fixation up to eight years with equivalent clinical and radiographic results to a customized implant.
authors: Department of Orthopaedic Surgery, Feinberg School of Medicine, Northwestern University, Chicago, Illinois.
authors: Ian
authors: I
authors: Chow
authors: Department of Orthopaedic Surgery, Feinberg School of Medicine, Northwestern University, Chicago, Illinois.
authors: Ronak M
authors: RM
authors: Patel
authors: Department of Orthopaedic Surgery, Feinberg School of Medicine, Northwestern University, Chicago, Illinois.
authors: S David
authors: SD
authors: Stulberg
mesh_terms: D000328:Adult; D000368:Aged; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation* / Q000379:methods; D016723:Bone Remodeling; D016022:Case-Control Studies; D004867:Equipment Design; D005260:Female; D005269:Femur / Q000601:surgery*; D005500:Follow-Up Studies; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D011474:Prosthesis Design; D016896:Treatment Outcome
keywords: metaphyseal engaging total hip arthroplasty; short stem femoral implants