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Fractures of Corin ‘Taper-Fit’ CDH stems used in ‘cement-in-cement’ revision total hip replacement



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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.


Correspondence should be sent to Mr T. W. Briant-Evans; e-mail: tbriantevans@hotmail.com

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