Objective: This research examines individual differences in the wrist postures adopted
during the use of two pointing devices (mouse and trackball). Design: A multiple case study
of twelve participants was employed. Background: The use of pointing devices may lead to
musculoskeletal discomfort and injury as a consequence of prolonged exposure to postures
involving wrist extension and ulnar deviation. Methods: Wrist flexion/extension and
radial/ulnar deviation was measured while twelve participants completed two standardised …