title: The CLS uncemented expansion cup: six cases of component failure.
abstract: We report six cases of fracture of the metal backing of the CLS expansion cup. The aim of this paper is to draw attention to this mode of failure and recommend that in cases of unexplained hip pain in those with a CLS acetabular component X-rays in at least two planes are performed. (Hip International 2004; 14: 28-33).
authors.affiliation: Hip Surgery Unit, Department of Orthopaedics and Trauma, Kingston Hospital, Surrey UK.
authors.forename: G
authors.initials: G
authors.lastname: Heilpern
authors.forename: B
authors.initials: B
authors.lastname: Parker