Dictionary > Lead-pipe rigidity

Lead-pipe rigidity

Definition
noun
A hypokinetic disorder characterized by the inflexibility or stiffness of the limb that is maintained equally throughout the passive flexion
Supplement
Lead-pipe rigidity is a type of movement disorder, i.e. a hypokinesia that pertains to decreased bodily movements. The loss is due to a disruption in the basal ganglia. An example of a condition exhibiting a hypokinetic disorder is the Parkinson’s disease. Patients suffering from Parkinson’s disease would experience rigidity in their muscles. They would also not be able to produce movement in the affected muscle. The various forms of hypokinetic disorders include akinesia, bradykinesia, dysarthria, dyskinesia, dystonia, freezing, neuroleptic malignant syndrome, postural instability, and rigidity.
Rigidity is characterized by an increase in muscle tone. This causes resistance to externally imposed joint movements.1 It affects both agonist muscles and antagonist muscles. It is associated with patients with Parkinson’s disease. Two forms of rigidity observed are the cogwheel rigidity and the lead-pipe type. The difference between the two is that in cogwheel rigidity there is tremor superimposed with background increase of tone whereas in lead-pipe rigidity there is a relatively uniform rigidity in both agonist and antagonist muscle group.2
See also:

  • Parkinson’s disease
  • hypokinesia

Reference(s):

1 O’Sullivan, Susan B.; Schmitz, Thomas J. (2007). “Parkinson’s Disease”. Physical Rehabilitation 5. Philadelphia: F.A Davis Company. pp. 856–857.

2 Teddy Poh. (2013). SPASTICITY VS RIGIDITY. Retrieved from https://teddybrain.wordpress.com/2013/01/01/spasticity-vs-rigidity/


You will also like...

Homeostatic Mechanisms and Cellular Communication
Homeostatic Mechanisms and Cellular Communication

Homeostasis is the relatively stable conditions of the internal environment that result from compensatory regulatory res..

Psychiatry and mental disorders
Psychiatry & Mental Disorders

Different mental disorders are described here. Read this tutorial to get an overview of schizophrenia, affective mood di..

DNA - schematic
Genetic Mutations

This tutorial looks at the mutation at the gene level and the harm it may bring. Learn about single nucleotide polymorph..

Crossing Over and Genetic Diversity
Inheritance and Probability

Gregor Mendel, an Austrian monk, is most famous in this field for his study of the phenotype of pea plants, including ..

Ploidy
Polyploidy

Humans are diploid creatures. This means that for every chromosome in the body, there is another one to match it. Howeve..

Genetic Mutations
Chromosome Mutations – II

This tutorial is a continuation of the first lesson on chromosomal mutation. Here, find out the chromosomal aberrations ..

Related Articles...

No related articles found

See all Related Topics