Lower Limb Nerves Flashcards
What are the Nerves of the Lumbar Plexus?
1) Genitofemoral Nerve
2) Lateral Femoral Cutaneous Nerve
3) Femoral Nerve –> L2-L4
4) Obturator Nerve –> L2-L4
Location of the Genitofemoral Nerve
Descends along the Psoas Muscles towards the inguinal ligament
- Lies ontop of the Psoas Major
Location of the Femoral Nerve
Lateral to Psoas Major - Lies underneath the muscle belly
Location of Lateral Femoral Cutaneous Nerve
Emerges behind the Psoas major heading towards the ASIS
Obturator Nerve innervation
(Muscle and Cutaneous Supply)
Adductors (Magnus, Longus, Brevis)
Gracilis
Obturator Externus
Cutaneous Supply - superomedial thigh
Femoral Nerve Innervation
(Muscle and Cutaneous Supply)
Quadriceps Group
Sartorius
Iliacus
Pectineus
Cutaneous Supply - Centre of the thigh & Medial Knee
Lateral Femoral Cutaneous Innervation
Skin of the lateral thigh
Genitofemoral Nerve Innervation
“hands in pockets” area of skin in the superior thigh
Nerves of the Lumbosacral Plexus
1) Superior Gluteal Nerve
2) Inferior Gluteal Nerve
3) Sciatic Nerve –> L4-S3
4) Posterior Femoral Cutaneous Nerve
Superior Gluteal Nerve Innervation
Gluteus Minimus
Gluteus Medius
Tensor Fascia Lata
Inferior Gluteal Nerve Innervation
Gluteus Maximus
Sciatic Nerve Innervation
Hamstring Muscles (Semimem, Semitend, Biceps Femoris)
Hamstring Part of Adductor Magnus
Divisions of the Sciatic Nerve
Common Fibular
Tibial Nerve
Tibial Nerve Innervation
Is a branch of the Sciatic Nerve
Innervates:
- Gastrocnemius
- Soleus
- TP, FDL, FHL (Tom dick and Harry)
- Plantaris
- Popliteus
Common Fibular (Peroneal) Nerve innervation
2 Branches:
1) Superficial Peroneal - Peroneus Longus, Peroneus Brevis
2) Deep Peroneal - Deep anterior Muscles
- EDB
- TA, EHL, EDL, Fibularis Tertius
