Hi Surbhihere, An example would be this: Your patient complains of numbness along the side of their lower leg. This area is innervated by the nerve root L5 and the peripheral nerve superficial peroneal. In order to diagnose which of the 2 is causing the problem you would perform the motor, reflex and sensory evaluation for both. (continued...)

I am taking my PT boards this week and this couldn't have come at a better time. Smoothing out all the wrinkles. Thank you!!

AhhhhH!!! I've consulted half a dozen resources and had spoken to several classmates, but this video was the missing link! I THINK I understand the difference between Dermatome and Cutaneous innervation now! Thank you so much, NeuroDocUniverse!!!!!!

I am and NP grad student thank you for creating this video that has tied it all together.

Excellent video. Thank you for posting........

For the superficial peroneal nerve the motor evaluation is only the peroneus longis and brevis muscle, there is no relfex and the sensory evaluation is the pure patch of the side of the lower leg. If the peroneus lobgis and brevis is weak (added to the complaint of numbness over the side of the lower leg, it would suggest a superficial peroneal nerve lesion. For L5 the motor evaluation is the extensor hallicus longis and brevis (there are secondary muscles which include (continued....)

Hello Doc, does L5 also cover the ball of the foot and toes? Thank you.

the toe extensors and hip abductors), the reflex is the medial hamstring, and the dermatome is the side of the lower leg and the top of the foot. Any problems in these areas would suggest an L5 lesion. The differential diagnosis is important because is dictates the area that needs to be addressed in the treatment plan. Please let me know if you require any further explanation. I hope this helps!

Hello Dr . i have herniated L5 S1 on the left the pain from buttock Run down to the heel . Got cortisone injection but the heel pain still . How to treat the nerves with S1

I failed my EMG and I keep falling straight down i think it starts behind my knees

You're welcome :-)

Great job Angie keeping

Hi Shyquietcare, I'm so sorry, but it's not possible for me to diagnose and recommend treat for your problem over this webpage. As a general observation, I would recommend a another opinion. If you have only tried the medical route, consider examination by a good chiropractor as chiropractic looks for functional problems and would not consider lack of radiographic findings to be the absence of a functional problem. Best to you and hoping for your treatment success...

Hi.i have some kind of tingling at a patch at side of left and right legs as you said at sup. Pero. Nerve. What is the cause of tingling at Sup. Pero. Nerve ?

i think L5 innervates for thumb, not L4?

very good vedio , but you explain the anterior compartment only pls post the vedio of posterior compartment of leg also thank you

Hallux. Hallucis is genitive.

Talks too much about stuff not important. Annoying

For the superficial peroneal nerve the motor evaluation is only the peroneus longis and brevis muscle, there is no relfex and the sensory evaluation is the pure patch of the side of the lower leg. If the peroneus lobgis and brevis is weak (added to the complaint of numbness over the side of the lower leg, it would suggest a superficial peroneal nerve lesion. For L5 the motor evaluation is the extensor hallicus longis and brevis (there are secondary muscles which include (continued....)

the toe extensors and hip abductors), the reflex is the medial hamstring, and the dermatome is the side of the lower leg and the top of the foot. Any problems in these areas would suggest an L5 lesion. The differential diagnosis is important because is dictates the area that needs to be addressed in the treatment plan. Please let me know if you require any further explanation. I hope this helps!

Hi Surbhihere, An example would be this: Your patient complains of numbness along the side of their lower leg. This area is innervated by the nerve root L5 and the peripheral nerve superficial peroneal. In order to diagnose which of the 2 is causing the problem you would perform the motor, reflex and sensory evaluation for both. (continued...)