Lumbar Nerve Roots

Question 1

Testing individual nerve root of L4

Answer 1

Disc Level of L3.
Muscle Test: Foot dorsiflexion and inversion: Tibialis anterior(deep fibular/peroneal nerve)
Reflex: Patellar Tendon
Sensation: Medial aspect of let, dorsum of foot, and medial aspect of big toe.

Question 2

Testing individual nerve root of L5

Answer 2

Disc level of L4
Foot dorsiflexion(tibialis anterior(peroneal nerve) and blank)
Big toe dorsiflexion: Extensor hallucis longus(deep fibular/peroneal nerve)
Toes 2, 3, 4 dorsiflexion: Extensor digitorum longus and brevis(deep fibular/peroneal nerve)
Hip and pelvis abduction: gluteus medius and minimus(superior gluteal nerve)
Reflex: None
Sensation: Lateral leg, dorsum of foot, and middle three toes.

Question 3

Testing individual nerve root of S1

Answer 3

Disc level of L5
Foot plantarflexion: Gastrocnemius and Soleus(Tibial Neve)
Foot plantar flexion and eversion: fibular/peroneus longus and brevis (superficial fibular/peroneal nerve)
Hip extension: Gluteus Maximus(inferior gluteal nerve)
Reflex: Achilles reflex
Sensation: Posterior aspect of the leg, lateral aspect of toot, and lateral aspect of little toe.

Question 4

Testing individual nerve root of S2

Answer 4

Disc level of S1
No reflex
Posterior aspect of thigh over popliteal fossa into posteriormecdial calf