Nerve plexus’ Flashcards
Lumbar plexus - nerve roots, major motor branches, motor and sensory function, clinical effects injury 5
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Ilioinguinal- L1- skin genitalia/ upper medial thigh
Genitofemoral- L1/2- femoral branch skin upper anterior thigh
Lateral femoral cutaneous nerve of thigh- L2/3- cutaneous sensation anterolateral thigh to knee
Femoral nerve- L2/3/4- skin anterior thigh (anterior femoral cutaneous), skin medial leg (saphenous branch), muscles anterior thigh
Obturator nerve- L2/3/4- skin medial thigh, muscles medial thigh
Sacral plexus- major motor branches, nerve roots, motor/ sensory functions, clinical effects injury
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Superior gluteal N- L4/5, S1- glut med and min and tensor fascia lata
Inferior gluteal N- L5, S1/2- glut max
Sciatic N- L4/5, S1/2/3- muscles posterior thigh -> superior end popliteal fossa -> tibial N skin posterolateral leg/ lateral foot/ sole, motor deep and superficial posterior leg AND common peroneal N short head biceps femoris, motor lateral and anterior leg, skin anterolateral leg/ dorsum. Both form sural N -> posterolateral leg and lateral foot.
Posterior femoral cutaneous N- S1/2/3- skin posterior thigh and leg
Pudenal- S2/3/4
UPPER Brachial plexus injuries cause, effects, palsy
XS increase angle neck and shoulder
Trauma
Birth baby- shoulder impacted pelvis, Xs traction baby’s neck
C5 & C6 sensory alteration in dermatomes and paralysis muscles supplied (deltoid, teres minor, biceps brachii, brachioradialis, brachilais, coracobrachialis)
Medial rotation and adduction arm, extension elbow ‘waiters tip’ ERB’S PALSY
Lower brachial plexus injury how, palsy, effects, deformity
Forced hyperextension/ hyperabduction, falls from height and grabs a tree or baby’s arm delivered first traction KLUMPKE’S palsy
C8-T1 weakness movements
Claw hand deformity - hyperextension metacarpophalangeal joints, flexion interphalangeal joints, abduction thumb and wasting interossei
