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
Which muscle is innervated by just the anterior rami of lumbar nerve root L1, L2, L3?
Psoas major/minor
Which muscle is innervated by the anterior rami of sacral plexus nerve root S1-S2
Piriformis
Obturator externus nerve/ nerve roots
Obturator Nerve posterior branch (L3-L4)
Obturator internus
Superior & Inferior Gemellus
Quadratus Femoris
L5, S1 Nerve to Obturator internus
Sartorius
Rectus Femoris
Vastus Lateralis, Medialis, Intermedius
Femoral nerve L2-L4 for the Quadriceps muscles
Sartorious muscle L2, L3
List the muscles of the posterior thigh that receive nerve supply from the Tibial division of the Sciatic branch, L5, S1, S2
One of them receives innervation from the common peroneal nerve.
Biceps Femoris LH
Semitendinosus
Semimembranosus
receive their nerve supply from this nerve and these nerve roots.
Biceps short head nerve
Pectineus muscle receives nerve supply from this nerve and nerve root
This muscle may also receive a branch from this nerve
Which muscle do the Femoral nerve, with nerve root L2-L3 supply?
This muscle may also receive a nerve branch from the Obturator nerve, L2-L3
This muscle group of the medial compartment of the thigh.
Two of these muscles receive nerve supply from the obturator nerve (anterior branch) nerve root _____
1 of these muscle receives supply from the obturator posterior branch
The adductor group muscles receive their nerve supply from _____, root L3-L4
Adductor Longus
Adductor Brevis = L2 & 3
Adductor Magnus = L4 (adductor part) receives its innervation from this nerve and branch
Nerve supply and nerve root of the Gracilis muscle?
This muscle is flat and broad, narrow and tapers down.
- has its origin in the symphysis pubis and arch
- Inserts into the medial condyle of the tibia
- Obturator nerve, L2-L3
This muscle group in the lateral compartment of the leg receive their nerve supply from the superficial peroneal(fibular) nerve; nerve root ______
Peroneus longus and brevis muscle, L5-S2
supplied by which nerve ?
These two extensor muscles (brevis) in the foot are innervated by the deep peroneal nerve with nerve roots_____
Extensor digitorum brevis
Extensor hallucis brevis muscle
S1-S2
Supplied by which nerve?
Nerve supply and root of Adductor Muscle Group?
Adductor Magnus:
- Adductor part: Obturator (posterior branch, L2-L3,L4)
- Hamstring part: Sciatic (tibial division, L4)
Adductor Brevis and Longus
- Obturator nerve (anterior branch L2,L3,L4)
Lateral plantar nerve root S2-S3 supplies these two deep muscles in the foot
Plantar Interossei
Dorsal Interossei
What are the nerves of the anterior thigh?
Their nerve origin and nerve roots
Femoral, Obturator and Lateral Cutaneous Nerve to Thigh
Which nerve supply the lateral compartment of the leg?
Superficial Fibular Nerve, L5, S1, S2
Name the 3 muscles share a common nerve and nerve root. All 3 muscles receive their nerve supply from the Femoral nerve (L2-L3).
Location of these muscles: anterior hip, medial thigh, anterior thigh. Can be recalled by the acronym SIP.
Sartorius muscle
Illiacus muscle
Pectinueus muscle
SIP
Where do The 6 Deep Lateral Hip Rotators (known by the Acronym POOS-IQ) Receive their nerve supply?
6 muscles with 4 different nerve supply.
Each muscles arises from 2 nerve roots
How many strips of P or OE?
Piriformis. Ventral Rami S1 & S2.
Obturator Externus. Obturator posterior, L3 & L4
Nerve to Obturator Internus & Superior Gemellus. L5, S1
Nerve to Quadrates femoris & Inferior Gemellus. L5, S1
