title: Metal on metal total hip arthroplasty and a large groin mass: Not always adverse reaction to metallic debris.
abstract: Due to their improved wear rates, Metal-on-metal bearings have been increasingly used in the past decade by orthopaedic surgeons carrying out total hip arthroplasty. However there is increasing evidence that there are significant complications associated with such implants. One well documented complication is that of metallic debris leading to pseudotumour formation, however there is less known about associations with other tumours within the pelvis. We present two cases where an intra-pelvic mass in patients with metal-on-metal implants were diagnosed as being of a different aetiology. This highlights the need for careful assessment of such patients in order to guide appropriate management.
authors.affiliation: Spr Trauma and Orthopaedics, Northwick Park Hospital, UK. Electronic address: harry.krishnan02@imperial.ac.uk.
authors.forename: Harry
authors.initials: H
authors.lastname: Krishnan
authors.affiliation: SpR Trauma and Orthopaedics, Royal National Orthopaedic Hospital, UK. Electronic address: Apm0044@gmail.com.
authors.forename: Alex
authors.initials: A
authors.lastname: Magnussen
authors.affiliation: SpR Trauma and Orthopaedics, Royal National Orthopaedic Hospital, UK.
authors.forename: Aadhar
authors.initials: A
authors.lastname: Sharma
authors.affiliation: Consultant Truma and Orthopaedics, Royal National Orthopaedic Hospital, UK.
authors.forename: John
authors.initials: J
authors.lastname: Skinner
keywords: Adverse reaction to metallic debris; Metal-on-metal; Pseudotumour; Revision arthoplasty