UMN signs
Upper motor neurone signs are the result of an interruption in the neural pathway above the anterior horn cell.
Characteristic of an upper motor neurone disease are:
- weakness - the extensors are weaker than the flexors in the arms, but the reverse is true in the legs
- muscle wasting is absent or slight - muscle wasting is prominent in a lower motor neurone lesion
- hyper-reflexia and clonus - reflexes are absent or reduced in a lower motor neurone lesion
- spasticity
- no fasciculations - fasciculations occur in a lower motor neurone lesion
- extensor plantar responses
Related pages
Create an account to add page annotations
Annotations allow you to add information to this page that would be handy to have on hand during a consultation. E.g. a website or number. This information will always show when you visit this page.