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Related Experiment Videos

Spastic pure motor monoparesis.

T Ashizawa, L A Rolak, M Hines

    Annals of Neurology
    |November 1, 1986
    PubMed
    Summary
    This summary is machine-generated.

    Pure motor monoparesis (PMM), affecting one limb, is distinct from pure motor hemiplegia (PMH). PMM is typically caused by a mass lesion in the brain, not infarction.

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    Area of Science:

    • Neurology
    • Neuroscience
    • Cerebral Imaging

    Background:

    • Pure motor hemiplegia (PMH) is commonly associated with lacunar infarction.
    • Pure motor monoparesis (PMM), characterized by isolated motor deficits in one limb, receives limited research attention.
    • Understanding the etiology of PMM is crucial for accurate diagnosis and treatment.

    Observation:

    • A prospective study focused on five patients presenting with pure motor monoparesis (PMM).
    • Clinical and radiological assessments were conducted to determine the underlying cause of PMM.
    • The study specifically investigated lesions in the superficial cerebral hemisphere.

    Findings:

    • Pure motor monoparesis (PMM) in the studied cohort was consistently linked to mass lesions.

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  • These mass lesions were located in the contralateral superficial cerebral hemisphere relative to the affected limb.
  • The findings differentiate PMM from PMH, suggesting distinct pathophysiological mechanisms.

    • Implications:

    • Pure motor monoparesis (PMM) should be considered a distinct neurological condition, not merely a variant of pure motor hemiplegia (PMH).
    • The identification of mass lesions as the cause of PMM necessitates specific diagnostic approaches, potentially including neuroimaging.
    • Further research into PMM can refine differential diagnoses and guide targeted therapeutic strategies for motor impairments.