title: A Cannulated Tri-Tapered Femoral Stem for Total Hip Arthroplasty: Clinical and Radiological Results at Ten Years.
abstract: We report the ten-year clinical and radiological outcomes of a novel cannulated, tri-tapered femoral stem, used in primary total hip arthroplasty (110 stems in 98 patients). At ten years, two Tri-taper stems had been revised for infection and dislocation. The mean Oxford Hip Score improved from 13.46 pre-operatively, to 37.04. Radiological analysis revealed radiolucent lines in 57 cases, but none exceeded 2 mm thickness. Stem subsidence was identified in 63 cases, with mean distal tip migration of 3.8 mm. Survivorship with revision for aseptic loosening as the end point was 100% at 10 years. Stem survival with revision for any cause was 98.2% (95% CI, 92.9% to 99.5%). The ten-year results of the Tri-taper stem are comparable to other polished, tapered femoral stems.
authors.affiliation: The Royal National Orthopaedic Hospital, Stanmore, Middlesex, United Kingdom; The Elective Orthopaedic Centre, Epsom, Surrey, United Kingdom.
authors.forename: Karthig
authors.initials: K
authors.lastname: Rajakulendran
authors.affiliation: The Elective Orthopaedic Centre, Epsom, Surrey, United Kingdom.
authors.forename: Francesco
authors.initials: F
authors.lastname: Strambi
authors.affiliation: Humanitas Clinical and Research Center, Milan, Italy.
authors.forename: Riccardo
authors.initials: R
authors.lastname: Ruggeri
authors.affiliation: The Elective Orthopaedic Centre, Epsom, Surrey, United Kingdom; St George's, University of London, Cranmer Terrace, London, United Kingdom.
authors.forename: Richard E
authors.initials: RE
authors.lastname: Field
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation*; D005260:Female; D005269:Femur / Q000601:surgery; D005500:Follow-Up Studies; D006621:Hip Joint / Q000000981:diagnostic imaging; D006622:Hip Prosthesis / Q000009:adverse effects / Q000706:statistics & numerical data*; D006801:Humans; D008297:Male; D011474:Prosthesis Design; D011859:Radiography; D012086:Reoperation / Q000706:statistics & numerical data; D016019:Survival Analysis; D016896:Treatment Outcome
keywords: cannulated femoral stem; femoral stem survivorship; total hip arthroplasty; total hip prosthesis; tri-tapered femoral stem