title: The management of osteoarthritis in movement disorders: a case discussion.
abstract: BACKGROUND
  A 37-year-old female with a hyperkinetic movement disorder due to chorea-acanthocytosis developed severe painful degenerative arthritis of her left knee as a consequence of repetitive involuntary flexion and extension dystonic and ballistic movements.
  
  
  METHODS
  Despite profound limitation in her mobility a total knee replacement was successfully undertaken.
  
  
  CONCLUSIONS
  The case emphasizes that patients with progressive neurodegenerative disorders may derive relief or resolution of pain by joint replacement even if mobility does not improve following surgery. A multidisciplinary approach to care is essential.
authors.affiliation: Chelsea and Westminster Hospitals Foundation Trust, London, United Kingdom.
authors.forename: Giles H
authors.initials: GH
authors.lastname: Stafford
authors.forename: Robin S
authors.initials: RS
authors.lastname: Howard
authors.forename: Jonathon
authors.initials: J
authors.lastname: Lavelle
keywords: Neuroacanthocytosis; joint replacement; osteoarthritis