Nerves Flashcards
Major Motor Nerves of the Pelvis/LE
Femoral
Obturator
Sciatic
Major Sensory Nerves of the Pelvis/LE
Ilioinguinal Iliohypogastric Genitofemoral Lateral femoral cutaneous Femoral Sciatic Pudendal
Function of Ilioinguinal Nerve
Origin of…
Motor: None
Sensory: Groin, symphysis
T12-L1
Function of Iliohypogastric Nerve
Origin of…
Motor: None
Sensory: Mons, lateral labia, upper inner thigh
T12-L1
Function of Genitofemoral Nerve
Origin of…
Motor: None
Sensory: Upper labia, anterior superior thigh
L1-L2
Function of Lateral Femoral Cutaneous Nerve
Origin of…
Motor: None
Sensory: Anterior and posteriolateral thigh
L2-L3
Function of Femoral Nerve
Origin of…
Motor: Flexion at hip, extension of knee
Sensory: Anterior and medial thigh, medial calf; LOSS OF PATELLAR REFLEX
L2-L4
Function of Obturator Nerve
Origin of…
Motor: ADDUCTION of thigh (ride a horse)
Sensory: Medial aspect of upper thigh
L2-L4
Function of Pudendal Nerve
Origin of…
Motor: None
Sensory: Perineum
S2-S4
Function of Sciatic Nerve
Origin of…
Motor: Hip extension, knee flexion
Sensory: Calf, foot
L4-S3
Function of Common Peroneal Nerve
Motor: Foot dorsiflexion, eversion (foot drop)
Sensory: Lateral calf, dorsum of foot
Function of Tibial Nerve
Motor: Foot plantar flexion, inversion
Sensory: Toes, plantar surface of foot
Nerve injuries in axillary dissection
Thoracodoral (C6-8) - Supplies latissimus dorsi —> cannot do push up or pull out of chair
Long thoracic (C5-7) - Supplies serratius anterior —> singed scapula, cannot lift hand above shoulder
Intercostal nerve —> upper arm numbness
What does superior gluteal nerve do?
Leg abduction (L4-S1)
Nerve supply to the vulva
Ilioinguinal (L1), genitofemoral (L1-2), pudendal (S2-4)
What deficit is seen with an upper brachial plexus injury? Mechanism of injury…
C5-7; Erb palsy, medial rotation and extension of the arm
Mechanism = exaggerated lateral flexion of the neck (think shoulder blocks)
What deficit is seen in lower brachial plexus injury? Mechanism of injury…
C8-T1; Klumpke palsy, loss of intrinsic muscles of the hand (“claw hand”)
Exaggerated abduction of the arm (think more than 90-degree angle on arm boards)
Deficit with ulnar nerve injury? Mechanism of injury…
C8-T1; Loss of sensation of 4th and 5th digits
Compression at medial epicondyle
