Spinal cord lesions

Lesions in the spinal cord produce a combination of segmental and long tract (longitudinal) signs.

Segmental signs are related to:

Lesions of the anterior root or anterior horn cell giving rise to a myotomal distribution of flaccid weakness, atrophy and fasciculations;

Lesions of the dorsal root or dorsal root entry zone giving rise to a dermatomal distribution of sensory loss;

Loss of reflex function, caused by disruption of the mono-synaptic stretch reflex arc;

Dermatomal pain from dorsal root irritation.

Longitudinal signs comprise:

Upper motor neuron lesions characterised by spastic weakness, hyper-reflexia, clonus, extensor plantar responses and loss of superficial cutaneous reflexes (abdominal and cremasteric);

Sensory loss below a sensory level.

Was this article helpful?

0 0
Wake Up Now

Wake Up Now

For Those Who Can’t Wake Up On Time And Fatigue Throughout The Day. Now You Can Wake Up Early And Be Super Energetic Everyday.

Get My Free Ebook

Post a comment