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The biomechanics and motor control of gait in Parkinson disease. Parkinson disease is a progressive neurological condition characterised by hypokinesia (reduced movement), akinesia (absent movement), tremor, rigidity and postural instability. These movement disorders are associated with a slow short-stepped, shuffling gait pattern. Analysis of the biomechanics of gait in response to medication, visual cues, attentional strategies and neurosurgery provides insight into the nature of the motor control deficit in Parkinson disease and the efficacy of current therapeutic interventions. In this article we supplement a critical evaluation of the Parkinson disease gait literature with two case examples. The first case describes the kinematic gait response of an individual with Parkinson disease to visual cues in the "off" phase of the levodopa medication cycle. The second case investigates the biomechanics and motor control of turning during walking in a patient with Parkinson disease compared with elderly and young control subjects. The results are interpreted in light of the need for gait analysis to investigate complex functional walking tasks rather than confining assessment to straight line walking, which has been the trend to date. Morris ME, Huxham F, McGinley J, Dodd K, Iansek R. School of Physiotherapy, La Trobe University, 3086, Bundoora, Australia 1: Clin Biomech (Bristol, Avon) 2001 Jul;16(6):459-70 PMID: 11427288 janet paterson: an akinetic rigid subtype, albeit perky, parky . pd: 54/41/37 cd: 54/44/43 tel: 613 256 8340 email: [log in to unmask] . snail mail: 375 Country Street, Apt 301, Almonte, Ontario, Canada, K0A 1A0 . a new voice: the nnnewsletter: http://groups.yahoo.com/group/janet313/ . a new voice: the wwweb site: http://www.geocities.com/janet313/ . ---------------------------------------------------------------------- To sign-off Parkinsn send a message to: mailto:[log in to unmask] In the body of the message put: signoff parkinsn