title: Posterior femoral neck impingement secondary to excess acetabular anteversion in hip resurfacing arthroplasty.
abstract: Component malposition in resurfacing arthroplasty can cause impingement, reduced range of motion, increased metal wear, and early failure. It is therefore important that any component malposition is recognized early and monitored carefully. We present a case of delayed diagnosis of excess acetabular component anteversion causing posterior femoral neck impingement and pain. We correlate the degree of damage found intraoperatively with the degree of component malposition on the radiographs. This is used as a platform to discuss the optimum positioning of hip resurfacing components and the radiographic methods used to determine component position postoperatively.
authors.affiliation: Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, UK.
authors.forename: Benan M
authors.initials: BM
authors.lastname: Dala-Ali
authors.forename: Matthew
authors.initials: M
authors.lastname: Welck
authors.forename: Ian
authors.initials: I
authors.lastname: Osborne
authors.forename: Sarah K
authors.initials: SK
authors.lastname: Muirhead-Allwood
mesh_terms: D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects* / Q000379:methods*; D005260:Female; D057925:Femoracetabular Impingement / Q000209:etiology*; D005272:Femur Neck; D006801:Humans; D008875:Middle Aged