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PHTH 517 > Wrist-Hand Overview > Flashcards

Wrist-Hand Overview Flashcards

1
Q

How many bones combined?

A

28 bones

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2
Q

How many muscles in the wrist and hands?

A

19 extrinsic
20 extrinsic

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3
Q

What is the purpose of the radio-ulnar ligaments?

A

makes the anterior/posterior capsule stronger

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4
Q

What capsule does supination tighten?

A

anterior

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5
Q

What capsule does pronation tighten?

A

Posterior

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6
Q

Where is the palmer radio-carpal ligament located?

A

Radius to proximal row of carpals

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7
Q

Where is the dorsal radio-carpal ligament located?

A

The same attachment to palmer but weaker !!

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8
Q

Where is the radio collateral ligament located?

A

styloid to scaphoid/retinaculum

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9
Q

Where is the ulnar collateral ligament located?

A

styloid to pisiform and triquetral

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10
Q

What is the open and closed pack position of the distal radio-ulnar joint?

A

5-10 degrees of supination

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11
Q

What is the open pack of the wrist?

Wrist - radiocarpal joint with TFCC/Ulna

A

Neutral and slight ulnar deviation

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12
Q

What is the closed pack position of the wrist?

Wrist - Radiocarpal joint with TFCC/Ulna

A

Full extension with radial deviation

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13
Q

What is the function of the distal radio-ulnar joint/TFCC?

A

Transfer loads from hand to the forearm

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14
Q

How many DOF is does the distal radial-ulnar joint have?

A

1 degree

Supination and pronation

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15
Q

How many degrees of freedom for the radiocarpal joint?

A

2 degrees of freedom

Flexion/extension (sagittal)
Radial/ulnar deviation (frontal)

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16
Q

If a patient has radial pain that indicated post-trauma, what is it suggesting?

A

Fx of scaphoid

17
Q

If there is no trauma, what is it indicating?

A

Pain with tenderness over the radial styloid will most likely be deQuervain tenosynovitis

18
Q

A patient is complaining of generalized pain at the back of the hand, what is it associated with?

A

radial carpal arthritis

19
Q

There is a mass over the posterior radial aspect of the wrist, what is the dx?

A

ganglion cyst

20
Q

If they c/o of ulnar pain after a trauma, what would be possible dx?

A

tear of the triangular fibrocartilage complex

21
Q

What is the law of repetitive motion?

An acroynm

A

I - NF/AR
I - insult
N - number of reps
F - force or tension of each repetition
A - amplitude of each repletion
R - relaxation time between reps

PHTH 517 (16 decks)

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