FINAL Flashcards
Nerve Injury
mildest for,, myelin sheath injury or ischemia, spared axons and connective tissue
NEUROPRAXIA
Nerve Injury
injury to axons and myelin sheath, surrounding connective tissue intact, wallerian degerneration occurs followed by axonal regrowth
Axonotemsis
Nerve Injury
Most severe, complete disruption of axon and support structures, no chance of regrowth
Neurotomesis
Compression at the suprascapular notch causes denervation of :
Supraspinatus and Infraspinatus
Compression at the spinoglenoid notch causes denervation of :
INFRASPINATUS
Suprascapular Nerve passes through what notch
Suprascapular and Spinoglenoid Notch
AXILLARY nerve crosses through what space?
Formed by posterior cord of brachial plexus
QUADRILATERAL Space
Along with posterior circumflex humeral artery
What innervates teres minor and deltoid?
AXILLARY Nerve
What syndrome is caused by compression of posterior humeral circumflex artery and axillary nerve?
Pt presents w/ deltoid weakness/exacerbated by shoulder abduction
Quadrilateral Space Syndrome
Musculocutaneous Nerve gives sensation to what part of the arm?
LATERAL FOREARM
continues distally as lateral cutaneous nerve
What nerve provides sensation to thenar eminence and radial thumb?
palmer cutaneous nerve branches 5cm before wrist
Median Nerve
What syndrome is suspected when there is nerve entrapment at the wrist?
Tinel Sign and Phalen Sign = + POSITIVE
CARPAL TUNNEL SYNDROME
When the patient is unable to form an O with thumb and index finger, what do you suspect?
Anterior Interosseus Nerve Entrapment
AIN Syndrome
What is syndrome is suspected when the elbow area is compressed, and there is paresthesia/weakness in the 4th/5th fingers?
Benedicition Hand, Wartenberg Sign, Froment Sign
Cubital Tunnel Syndrome
– Ulnar Neuropathy
When the patient is unable to bring their pinky back to midline, what test is positive?
Wartenberg Sign –Ulnar Neuropathy
What nerve gives branches to tricpes and anconeus before coursing posterior to spiral groove of humerus, descends in front of lateral epicondyle at the elbow?
Radial Nerve
Saturday Night Palsy is a radial neuropathy, due to compression where?
SPIRAL GROOVE
What nerve is considered the lifeline of the lower extremity?
SCIATIC Nerve
Piriformis Muscle syndrome can be caused due to which nerve entrapment?
buttock pain with walking, sitting can dec pain, + FAIR Test
Sciatic Nerve
Patient complains of deep ache near adductor origin on the pubic bone, excaerbated by excercise … you suspect?
Muscle changes associated with denervation
Obturator Nerve Entrapment
What nerve supplies the short head of biceps femoris in the thigh?
Common Peroneal Nerve
What are the most common sites of common peroneal nerve entrapment?
Fibular Neck and Peroneus Longus Muscle
Patient presents with paresthesia along lateral lower leg/dorsal foot, she has ankle dorsiflexion and foot eversion weakness, steppage gait and foot drop
Common Peroneal Nerve Entrapment