Musculoskeletal Flashcards

1
Q

What nerve passes through the carpal tunnel?

A

Median nerve

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2
Q

What bones make up the carpal tunnel?

A
scaffoid
lunate
triquetrum
pisiform
hamate
capitate
trapezoid
trapezium
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3
Q

What bone in the hand/wrist is most commonly fractured in a fall of an outstretched wrist?

A

the scaffoid bone

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4
Q

`what bone can be palpated in the anatomical snuff box?

A

scaffoid bone

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5
Q

What is carpal tunnel syndrome?

A

entrapment of the median nerve in the carpal tunnel.

nerve compression –> paresthesia, pain, and numbness in the distribution of the median nerve

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6
Q

What is Guyon canal syndrome? in whom is it classically seen?

A

Compression of the ulnar nerve at the wrist or hand.

Classically seen in cyclists due to compression from handlebars

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7
Q

What nerve roots make up the median nerve?

A

C5-T1

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8
Q

What is the motor innervation of the median nerve?

A

thenar muscles
forearm flexors
radial (lateral) lumbricals

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9
Q

What is the sensory innervation of the median nerve?

A

Radial 2/3 of the palm

volar surfaces of thumb, 2nd, and 3rd digits, and radial half of 4th

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10
Q

What is the muscle and sensory innervation of the musculocutaneous nerve?

A

Innervates the arm flexors and provides sensory information to the anterolateral forearm

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11
Q

What is the motor innervation of the ulnar nerve?

A
hypothenar muscles
adductor pollicis
interosseus muscles
ulnar (medial) lumbricals (4 and 5)
ulnar flexors
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12
Q

What is the sensory innervation of the ulnar nerve?

A

ulnar half of the wrist and palm, 4th and 5th digits

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13
Q

What is the motor innervation of the radial nerve?

A

innervates the extensors of the arm and forearm

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14
Q

What is the sensory innervation of the radial nerve?

A

skin of the posterior arm and forearm

radial half of the dorsum of the hand (not including the fingertips)

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