title: Fractures of Corin 'Taper-Fit' CDH stems used in 'cement-in-cement' revision total hip replacement.
abstract: We describe two cases of fracture of Corin Taper-Fit stems used for cement-in-cement revision of congenital dysplasia of the hip. Both prostheses were implanted in patients in their 50s, with high offsets (+7.5 mm and +3.5 mm), one with a large diameter (48 mm) head and one with a constrained acetabular component. Fracture of the stems took place at nine months and three years post-operatively following low-demand activity. Both fractures occurred at the most medial of the two stem introducer holes in the neck of the prosthesis, a design feature that is unique to the Taper-Fit stem. We would urge caution in the use of these particular stems for cement-in-cement revisions.
authors.affiliation: Department of Orthopaedics, Royal Cornwall Hospitals NHS Trust, Treliske, Truro, UK. tbriantevans@hotmail.com
authors.forename: T W
authors.initials: TW
authors.lastname: Briant-Evans
authors.forename: M R
authors.initials: MR
authors.lastname: Norton
authors.forename: E D
authors.initials: ED
authors.lastname: Fern
mesh_terms: D000077:Acetabulum / Q000601:surgery; D019644:Arthroplasty, Replacement, Hip / Q000379:methods*; D001843:Bone Cements; D005260:Female; D005269:Femur / Q000601:surgery; D006618:Hip Dislocation, Congenital / Q000601:surgery*; D006622:Hip Prosthesis; D006801:Humans; D008875:Middle Aged; D011475:Prosthesis Failure; D012086:Reoperation; D016896:Treatment Outcome
chemical_list: D001843:Bone Cements