1 PNS: lower limb Lower-limb nerves Thigh Anterior: Femoral N Medial: Obturator N Posterior: Sciatic N Popliteal fossa Sciatic N → bifurcation Leg Anterior: Fibular (peroneal) N Posterior: Tibial N Tibial nerve Fibular nerve Right leg Ant. view Post. view
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Thigh Anterior: Femoral N Medial: Obturator N Posterior: Sciatic Nhomepage.ntu.edu.tw/.../teacher/hsieh/ANOTOMY/PNS_Lower.pdf · 2019-09-30 · PNS: lower limb 1 Lower-limb nerves
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1 PNS: lower limb
Lower-limb nerves Thigh Anterior: Femoral N Medial: Obturator N Posterior: Sciatic N
Popliteal fossa Sciatic N → bifurcation
Leg Anterior: Fibular
(peroneal) N Posterior: Tibial N
Tibial nerve
Fibular nerve
Right leg
Ant. view Post. view
2 PNS: lower limb
Nerves in leg (Anterior)
Lateral Common fibular n Deep fibular n Superficial fibular n
Medial Saphenous N (from Femoral N, sensory)
Saphenous
medial side
Right leg (ant. view)
3 PNS: lower limb
Nerves in leg (posterior)
Common fibular N from sciatic N Tibial N Sural N (lateral)
Right leg (post. view)
4 PNS: lower limb
Lumbar plexus
from ventral rami of L1-4; with Obturator N (L2-4) Femoral N (L2-4) Lumbosacral trunk (L4-5) Ilioinguinal (L1) Iliohypogastric (L1) Genitofemoral (L1-2) Lat. femoral cutaenous (L2-3)
5 PNS: lower limb
Lumbar plexus
6 PNS: lower limb
Femoral nerve
From lumbar plexus (L2-4), deep to midpoint of inguinal ligament Motor Anterior thigh muscles: Quadriceps femoris
Sensory Thigh (Anterior-Medial surface)
7 PNS: lower limb
8 PNS: lower limb
Obturator nerve
Lumbar plexus (L2-4) through obturator foramen Ant. br: adductor longus,
adductor brevis, gracillis, pectineus Post. br: obturator ext.,
adductor magnus Right thigh (ant. view)
9 PNS: lower limb
Sacral plexus; Lumbosacral plexus ventral rami of S1-4; joined with lower lumbar nerves
via lumbosacral trunk Sciatic N (L4-S3) Superior gluteal N (L4-S1): gluteus med and min
(greater trochanter; abduction of hip joint) Inferior gluteal N (L5-S2): gluteus max (gluteal
tuberosity; extension, lateral rotation of hip joint) Pudendal N (S2-4) Muscular nerves Cutaneous nerves