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19 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Describe the dermatomes of the upper limb |
c6 = thumb c7 = index, middle, and ring fingers c8 = little finger |
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Describe the anatomical basis and clinical significance of the Allen test |
The Allen test is used to determine whether the ulnar and radial arteries are each a chief source of blood supply to a patient's hand. Must perform the Allen test because the ulnar and radial arteries are not always the chief source of blood supply |
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Describe where pulsations of the radial and ulnar arteries can be palpated |
On the anterior surface of the wrist |
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Describe the sensory and motor deficits typical of insidious onset of carpal tunnel syndrome |
Due to entrapment or compression o the median nerve
Insidious onset of pain and sensory deficits followed by motor deficits of the muscles of the thenar eminence = carpal tunnel syndrome |
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Describe skin areas of the hand whose sensory innervation is provided by the median, ulnar, and superficial radial nerves |
On the palmar surface: Ulanar: medial 1/3rd of palm and medial one and a half digits Median = lateral 2/3rd of the palm ad the lateral 3 and a half digits)
On the posterior surface: ulnar nerve supplies the medial 1/3 and the radial nerve supplies the lateral 2/3rds |
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Explain how paralysis of the muscles of the thenar eminence produces ape hand |
Flattening of the thenar eminence + excessive lateral rotation of the thumb = ape hand
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Explain how paralysis of the muscles of the thenar eminence produces clawhand |
Paralysis of the 3rd and 4th lumbricals results in hyperextension of the ring and little fingers at their metacarpophalangeal joints and flexion at the interphalangeal joints |
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Explain how paralysis of the muscles of the thenar eminence produces Klumpe's palsy |
due to excessive traction on the lower part of the brachial plexus leading to damage of the intrinsic hand muscles
Klumpes = combination of clawhand + ape hand |
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List the spinal nerve that controls abduction and adduction of the fingers |
TI |
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Collective action of the dorsal interossei |
Dorsal = ABduct its finger |
DAB |
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Collective action of the palmar interossei |
Palmer can ADduct its finger |
PAD |
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How to test the median nerve's motor supply?
What muscle is likely affected when there is damage to this nerve in the hand? |
Ask the patient to touch the base of the little finger with the thumb
Opponen pollicis |
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How to test the ulnar nerve's motor supply?
What muscle is likely affected when there is damage to this nerve in the hand? |
ask the patient to clench a piece of paper tightly between the middle and ring finger
If patient is unable, the palmar and dorsal interossei are paralyzed |
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Cubital Fossa Contenst |
from lateral to medial: Radial Nerve Biceps Tendon Brachial Artery Median Nerve |
Really Need Booze To Be At My Nicest |
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Carpal Bones |
Proximal row lateral to medial: Scaphoid, lunate, triquetrium, pisiform
Distal row lateral to medial: Trapezium, Trapezoid, Capate, Hamate |
Sally Like To Play The Tiny Chrome Harmonica |
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Hand: Nerve Lesions |
Drop = Radial Nerve Claw = Ulnar nerve Median = ape hand |
DR CUMA |
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Median Nerve:hand muscles innervated |
Lumbricals 1 & 2 Opponens pollicis Abductor pollicis brevis Flexor pollicis brevis |
The MEat LOAF muscles |
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How do flexor digitorum muscles insert? |
Remember this rhyme: Superficialis Splits in two, to permit profunduis passing through |
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Intrinsic muscles of the hand |
Thenar: Abductor pollicis longus Flexor Pollicis brevis Opponens pollicis Adductor pollicis
Hypothenar: Opponens digiti minimi Flexor digiti minimi Abductor digiti minimi |
All For One And One For All |
