title: Revision hip arthroplasty with a modular cementless stem: mid-term follow up.
abstract: Despite the increasing volume of revision total hip arthroplasty (THA) being performed in the United States, there are few studies reporting mid-term clinical and radiographic outcomes of modular fully porous-coated femoral stems. We retrospectively studied a consecutive series of patients who underwent revision THA with a modular extensively porous-coated femoral component at a single institution and by a single surgeon. The final study group included 54 hips (52 patients) followed for an average of 84 months. Ten-year survival rates with revision for any reason and revision for femoral loosening as endpoints were 94% and 100%, respectively. No complications regarding the modular junction were encountered. Of the 50 hips with adequate radiographs, all showed proximal ingrowth and 42 (84%) had both proximal and distal ingrowth. The modular, fully porous-coated femoral stem studied demonstrated excellent survivorship and bone ingrowth at mid-term follow up.
authors.affiliation: Department of Orthopaedic Surgery, Kaiser Permanente - Walnut Creek, CA, USA.
authors.forename: Stefan R
authors.initials: SR
authors.lastname: Jibodh
authors.forename: Ran
authors.initials: R
authors.lastname: Schwarzkopf
authors.forename: Shawn G
authors.initials: SG
authors.lastname: Anthony
authors.forename: Henrik
authors.initials: H
authors.lastname: Malchau
authors.forename: Kyle E
authors.initials: KE
authors.lastname: Dempsey
authors.forename: Daniel M
authors.initials: DM
authors.lastname: Estok
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D016062:Porosity; D011474:Prosthesis Design; D011475:Prosthesis Failure; D012086:Reoperation; D012189:Retrospective Studies; D015996:Survival Rate; D016896:Treatment Outcome
keywords: cementless femoral stems; fully coated femoral stems; modular femoral stems; revision hip arthroplasty