Difference between upper motor lesion and lower motor lesion
MOTOR NEURON LESION
An upper motor neuron lesion may be a of the neural pathway over the front horn of the spinal rope or engine cores of the cranial nerves. A Lower motor neuron lesion could be a which influences nerve filaments traveling from the front horn of the spinal rope to the related muscle(s).
UPPER MOTOR NEURON LESION SIGNS:
•Weakness – the extensors are weaker than the flexors within the arms, but the invert is genuine within the legs •Muscle squandering is missing or slight
•Hyperreflexia with clonus
•Spasticity
•No fasciculation’s •Babinski sign positive – extended hallux and flaring of remaining digits •Hoffmann’s sign is positive on the off chance that flexion and sudden discharge of the terminal phalanx of the center finger result in reflex flexion of all the digits. Usually a sign of the nearness of reflex action. It is positive in, but not particular to, upper motor neuron lesions.
•Pronator float – Quiet is inquired to hold completely expanded arms straight out in front with palms confronting upward. In case a injury is show when the understanding is inquired to shut his/her eyes the arm on the affected side pronates due to the distinction in strong tone between pronators and supinators.
LOWER MOTOR NEURON LESION FINDINGS:
•Weakness – restricted to central or root innervated pattern
•Muscle Squandering – unmistakable in a central pattern
•Reflexes – missing or decreased in a lower motor neuron lesion
•Fasciculation’s show within the related muscle group •Babinski sign truant – descending going digits
