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2673 pages added, reviewed or updated during the last month (last updated: 11/4/2021)


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lead - pipe rigidity

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Lead-pipe rigidity is the term used to describe the hypertonicity felt in a parkinsonian limb throughout the range of movements of a joint. It is indicative of increased tone in all the sets of muscles around a joint. Lead-pipe rigidity, as with other forms of parkinsonian rigidity, may be more pronounced on one side.

Lead-pipe rigidity persists throughout the range of movement of a particular joint, as distinct from clasp knife rigidity which varies.

Last reviewed 01/2018

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