Case Report
Ulnar Nerve Palsy–like Motor and Sensory Loss Caused by a Small Cortical Infarct

https://doi.org/10.1016/j.jstrokecerebrovasdis.2011.02.008Get rights and content

A 56-year-old man with a small infarct in the left precentral knob area induced both motor and sensory impairments that were similar to right ulnar nerve palsy. The only difference from ulnar nerve palsy was that the patient showed sensory disturbance not only on the ulnar side but also on the radial side of the right ring finger.

Section snippets

Discussion

A small cortical infarct of the precentral knob causes weakness similar to ulnar nerve palsy,1, 2 often called pseudoulnar palsy.3 A posterior wall lesion of the central sulcus results in sensory impairment on the ulnar side of the hand.4, 5 However, our patient had not only weakness like right ulnar nerve palsy but also hypesthesia in both right ring and little fingers. The patient appeared to have right ulnar nerve palsy. There has been a reported case presenting with motor and sensory loss

References (6)

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  • A. Gass et al.

    A diffusion-weighted MRI study of acute ischemic distal arm paresis

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  • T.G. Phan et al.

    Pseudoulnar palsy from a small infarct of the precentral knob

    Neurology

    (2000)
There are more references available in the full text version of this article.

Cited by (3)

  • Ischemic stroke of the “hand knob area”: A case series and literature review

    2019, Journal of Clinical Neuroscience
    Citation Excerpt :

    However, the majority (58%) were due to undetermined causes, while in the literature the most common causes are atheroembolism and cardioembolism, even though only few studies have used the TOAST classification for stroke mechanisms [1], and several reports did not clarify the possible cause of stroke [2,10,15,16,25,34]. Information regarding outcome is scarce, and many reports do not specify patient evolution, time of follow-up or established treatments [4,7,10,11,15,16,20,21,25,29,30,34,36]. The majority of our patients presented excellent recovery with mild or no sequelae, and recurrence was observed only in one patient, who was initially misdiagnosed as a peripheral pathology.

  • Is isolated hand weakness associated with subtypes of stroke?

    2019, Ideggyogyaszati Szemle

  • Isolated left hand weakness due to cortical infarction

    2015, Turk Geriatri Dergisi
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