title: Survival outcomes of cemented compared to uncemented stems in primary total hip replacement.
abstract: Total hip replacement (THR) is a successful and reliable operation for both relieving pain and improving function in patients who are disabled with end stage arthritis. The ageing population is predicted to significantly increase the requirement for THR in patients who have a higher functional demand than those of the past. Uncemented THR was introduced to improve the long term results and in particular the results in younger, higher functioning patients. There has been controversy about the value of uncemented compared to cemented THR although there has been a world-wide trend towards uncemented fixation. Uncemented acetabular fixation has gained wide acceptance, as seen in the increasing number of hybrid THR in joint registries, but there remains debate about the best mode of femoral fixation. In this article we review the history and current world-wide registry data, with an in-depth analysis of the New Zealand Joint Registry, to determine the results of uncemented femoral fixation in an attempt to provide an evidence-based answer as to the value of this form of fixation.
authors.affiliation: Michael Wyatt, Gary Hooper, Christopher Frampton, Alastair Rothwell, Department of Orthopaedic Surgery and Musculoskeletal Medicine, University of Otago, Christchurch, Canterbury 8011, New Zealand.
authors.forename: Michael
authors.initials: M
authors.lastname: Wyatt
authors.affiliation: Michael Wyatt, Gary Hooper, Christopher Frampton, Alastair Rothwell, Department of Orthopaedic Surgery and Musculoskeletal Medicine, University of Otago, Christchurch, Canterbury 8011, New Zealand.
authors.forename: Gary
authors.initials: G
authors.lastname: Hooper
authors.affiliation: Michael Wyatt, Gary Hooper, Christopher Frampton, Alastair Rothwell, Department of Orthopaedic Surgery and Musculoskeletal Medicine, University of Otago, Christchurch, Canterbury 8011, New Zealand.
authors.forename: Christopher
authors.initials: C
authors.lastname: Frampton
authors.affiliation: Michael Wyatt, Gary Hooper, Christopher Frampton, Alastair Rothwell, Department of Orthopaedic Surgery and Musculoskeletal Medicine, University of Otago, Christchurch, Canterbury 8011, New Zealand.
authors.forename: Alastair
authors.initials: A
authors.lastname: Rothwell
keywords: Cemented; Femoral fixation; Implamt survival; Joint replacement registry; Primary total hip replacement; Uncemented