Lower Limb Anatomy Flashcards
Roots of lumbar Plexus
T12 and L1 to L4
Branches of lumbar plexus
Iliohypogastric lioinguinal Genitofemoral Lateral Cutaneous Femoral Nerve Obturator Femoral
Sensation of liohyogastric nerve
Gluteal region above pubis
Sensation of ilioinguinal nerve
Penis/Scrotum/Mons/Labium Majius
Muscles of genito-femoral nerve (Genital branch)
Cremaster + Dartos
Sensation of genito-femoral nerve (Femoral branch)
Anterior, upper thigh
Sensation of lateral femoral cutaneous nerve
Lateral thigh
Muscles of obturator nerve
External obturator Adductor Longus Adductor Brevis Adductor Magnus Gracilis Pectineus
Sensory supply of obturator nerve
Medial thigh
Supply of femoral nerve (Ant. Branch)
Anterior thigh sensation
Supply of femoral nerve (Post. branch)
Quadriceps Femoris
Roots of Sacral Plexus
S 1 - 3
Branches of Sacral Plexus
Superior Gluteal Inferior Gluteal Posterior Femoral Cutaneous Piriformis Obturator Internus Quadratus Femoris Sciatic
Supply of superior gluteal nerve
Gluteus medius and minimus
Supply of inferior gluteal nerve
Gluteus Maximus
Supply of posterior femoral cutaneous nerve
Sensation posterior thigh
Sciatic nerve’s route out of pelvis
Below piriformis, through greater sciatic foramen
Supply of sciatic nerve in thigh
Biceps femoris, semitendinosus, semi-membrinosus
Divisions of sciatic nerve
Common fibular, Tibial
Supply of tibial nerve
Gastonemicus, Popliteus, Soleus, Plantaris, Tibialis Posterior, Flexor digitorum longus, flexor hallicus longus
Supply of medial plantar nerve
Medial 3.5 toes
Supply of lateral plantar nerve
Lateral 1.5 toes
Supply of Sural nerve
Sensation posterior-lateral leg
Formed from branches of tibial and common fibular nerve
Location of common fibular nerve division
Beneath peroneus longus
Supply superficial fibular nerve
Peroneus longus / brevis
Anterolateral leg
Dorsum of foot (Not first web space!)
Supply deep fibular nerve
Tibialis anterior Extnsor digitorum longus Peroneus tertius Extensor hallicus longus Extensor hallicus brevis Extensor digitorum brevis First web space
Lower Limb anterior muscular compartment
Tibialis anteriror
Extensor digitorum longus
Peroneus tertius
Extensor hallicus longus
Lower limb perennial muscular compartment
Peroneus longus
Peroneus brevis
Superficial Posterior compartment
Gastronemicus, Soleus
Deep posterior compartment
Flexor digitorum longus
Flexor hallicus longus
Tibialis posterior
Exterior marking of division of iliac arteries
L4
Supply of internal iliac
Hypogastric artery
Branches of external iliac artery
Inferior epigastric
Deep circumflex iliac
Femoral artery
External marking of iliac artery (Groin)
Midway between ASIS and Symphysis pubis
Mid-inguinal point
Branches of femoral artery
Deep external pudeneal (Scrotum) Profunda Femoris (Medial fascial compartment) Descending genicular arteries
Location of end of popliteal artery
Lower border popliteal muscle
Deepest structure within popliteal fossa
Popliteal artery
Branches anterior tibial artery
Dorsalis pedis
Psoas Muscle (Major / Minor)
Origin: T12 - L5 Transverse Processess Insertion: Lesser trochanter Innervation: Lumbar plexus Artery: Iliolumbar Action: Hip flexion
Iliacus
Origin: Iliac fossa (upper 2/3) Insertion: Lesser trochanter Innervation: Femoral nerve Artery: Medial femoral circumflex Action: Hip flexion
Gluteus Maximus
Origin: Sacrum Insertion: Gluteal Tuberosity Innervation: Inferior gluteal nerve Artery: Sup / Inf gluteal arteries Action: Ext rotation
Gluteus Medius
Origin: Ilium Insertion: Greater trochanter Innervation: Sup. gluteal nerve Artery: Sup. gluteal artery Action: Hip abduction
Gluteus Minimus
Origin: Ileum Insertion: Greater trochanter Innervation: Sup. gluteal nerve Artery: Sup. gluteal artery Action: Hip abduction
Quadratus femoris
Origin: Iscial tuberosity Insertion: Intertrochanteric crest Innervation: Nerve to quad fem Artery: Inf gluteal artery Action: Lateral rotation / Adduction
Obturator Internus
Origin: Ant. surface of sciopubic ramus Insertion: Medial greater trochanter Innervation: Nerve to ob. int. Artery: Inf gluteal artery Action: Hib abduction
Obturator externus
Origin: Posterior surface of obturator foramen Insertion: Trochanteric fossa Innervation: Obturator nerve Artery: Obturator artery Action: Adduction
Piriformis
Origin: Sacrum Insertion: Greater trochanter Innervation: Nerve to piriformis Artery: Inf. gluteal Action: External rotation