Nerve Supply & Roots-- Lower Limbs Flashcards
Tibial Nerve
- Nerve Root
- Motor and Cutaneous supply
- anterior leg
- L4-S3
Posterior leg muscles:
- Gastrocnemius, Soleus, Tibialis Posterior,
- flexor hallucis longus, FHD,
- Popliteus muscles
Common Peroneal Nerve
nerve root, supply
(L4-S2).
- skin of the anterior lateral thigh
- the short head of the Biceps Femoris muscle.
Deep Peroneal Nerve
- the patch of skin between toes 1 and 2
The muscles of the anterior leg:
Tibialis Anterior
Extensor Hallucis Longus
Extensor Digitorum Longus
This nerve supply sensation to the sole of foot, and the tips of first 3.5 toes (medial)
Name the nerve.
Name the intrinsic foot muscles that this nerve innervates
Medial Plantar Nerve
Abductor H.
Flexor DB
Flexor H.
Lumbrical 1 & 2
Skin: sole of foot lateral 1.5 toes
Name the nerve and the intrinsic foot muscles that this nerve supply
Lateral Plantar Nerve
Adductor H.
Abductor DM
Flexor DM
Lumbricals 3 & 4
Trauma on the anterior side of this leg may result in the damage of this nerve.
(eg., Foot drop)
Deep Peroneal Nerve
Posterior Cutaneous Nerve of the Thigh
Skin = Posterior thigh, Lower buttock to the back of the knee
No motor supply
Pudental Nerve (S2-S4)
S = Perineum M = Levator And External Anal and Urethral Sphincters
Lateral Cutaneous Nerve of the Thigh (L2-L3)
S = Anterior Lateral Thigh M = None
Femoral Nerve (L2-4)
S = Anterior Thigh M = Sartorius, Quadriceps Muscles, and Pectineus
Obturator Nerve (L2-L4)
S = Medial thigh and Hip joint M = Gracilis, Obturator Externus, Adductor Muscles except the Hamstring part of the Adductor Magnus
Saphenous Nerve (from femoral N)
S = medial leg and ankle and knee joint M = none
Tibialis Posterior Muscle
Nerves and Nerve root/ branches
Receives its supply from the Tibial Nerve, from L4 & L5 branch
The tibial nerve supply these 7 muscles
Gastrocnemius Soleus Plantaris Popliteus Tibilais Posterior Flexor DL Flexor HL
List their nerve roots
S1, S2. = Gastrocnemius/ Soleus/ Plantaris/
S2 - S3 = Flexor DL/ Flexor HL
L4 - L5 = Tibilais Posterior
L4, L5, S1 = Popliteus
The anterior compartment of the leg is innervated by which nerve?
Deep peroneal nerve of the Common Peroneal Branch