Neurological exam: lower extremity

Question 1

What dermatomes make up the anterior portion of the Leg?

Answer 1

L1-S1
L1-Anterior Iliac Crest and Inguinal area
L2-Superior/Anterior and medial thigh
L3-Middle of anterior thigh to medial femoral condyle
L4-Aterior thigh across knee to medial malleolus
L5-Anterior Leg to Hallux and 2nd metatarsal
S1-lateral dorsal foot lateral malleolus 3-5 metatarsals

Question 2

What dermatomes make up the posterior portion of the leg?

Answer 2

L4–Iliac Crest to S5 Gluteal Fold
L5-Lateral Thigh &medial plantar portion of foot
S1-medial.lateral posterior thigh, lateral 1/2 of leg
S2-medial posterior thigh and medial part of Leg
S3-S4-S5 Medial buttocks respectively

Question 3

According to ASIS what is the proper place to check dermatomes for the lower extremity?

Answer 3

L1 Proximal, medial thigh–adductor tendon
L2 Medial thigh mid 1/3
L3 medial femoral condyle
L4 medial malleolus
L5 dorsum of foot 3rd metatarsophalangeal joint
S1 posterior lateral calcaneus
S2popliteal fossa

Question 4

According to ASIS what are the proper myotomal test for the lower extremity?

Answer 4

L1 -Hip Flexion
L2-Hip Flexion
L3-Knee Extension
L4-Ankle dorsiflexion
L5-Log toe extensors-great toe extensors
S1 Ankle plantar flexion-eversion
S2-knee flexion-plantarflexioon

Question 5

What are the two major lower extremity reflexes?

Answer 5

L4-Patella tendon
S1-Achhilles tendon
Lower motor neuronal test!

Question 6

Others for Lower extremity

Answer 6

Babinski–sign of upper motor neuron involvement!