Question

When assessing for weakness in the lower extremity, a diminished patellar reflex is noted. This may indicate the possibility of lesions in which nerves? a) L3-L4 b) L4-L5 c) L5-S1 d) S1-S2

Answer 1

A diminished patellar reflex may indicate lesions in the L3-L4 nerves. Therefore, the correct option is A.

Step-by-step explanation:

The patellar reflex, also known as the knee-j*rk reflex, is primarily associated with the nerves of the lumbar region. The reflex involves the spinal nerves L2, L3, and L4, and the corresponding segments of the spinal cord.

When assessing for weakness in the lower extremity and observing a diminished patellar reflex, it suggests a potential issue with the nerves associated with the L3-L4 spinal segments. Therefore, the correct option in this case would be L3-L4

Diminished or absent patellar reflexes can be indicative of nerve compression or dysfunction in the lumbar region, particularly at the levels corresponding to L3 and L4.

Therefore, the correct option is A.