Question

A clinician is assessing the muscle tone of a patient who has been diagnosed with a lower motor neuron (LMN) lesion. Which of the following assessment findings is congruent with the patient's diagnosis?
a. Hypotonia
b. Spasticity
c. Tetany
d. Rigidity

Answer 1

Answer:

a.Hypotonic

Explanation:

Lower motor neurons refer to the spinal and cranial motor neurons that directly innervate skeletal muscles.

When injury occurs to lower parts of the motor system , such as motor systems or their axons , deficits may be well localized. If the motor nerve to a muscle is damaged , that muscle develop paresis or complete paralysis. If their motor nerves are transected ,muscles become flaccid (atonia ) and eventually develops atrophy.

Damage to these neurons is associated with :

1) Flaccid paralysis

2) Muscle atrophy

3) Fasciculations

4) Hypotonia

5) Hyporeflexia.

Hence option A is the right answer.