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hand > Bones of the hand > Flashcards

Bones of the hand Flashcards

1
Q

What are all the carpal bones of the hand?

A 
Scaphoid 
lunate 
triquetrium 
pisiform 
trapezieum 
trapezoid capate 
hamate
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2
Q

Which bone articulate with proximal carpals?

A

the radius

ulna do not articulate

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3
Q

How is the radius attached to the ulna?

A

triangular cartilage

it is an articulating disk

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4
Q

How is force generated at the hand to the ulna?

A

from the proximal carpals through a articulating disk to the ulna

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5
Q

What are the proximal carpals from lateral to medial?

A

Scaphoid
lunate
triquetrium /pisiform

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6
Q

What does the pisiform articulate with?

A

only articulates with the triquetrium is not an integral part of the proximal row

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7
Q

What does some clinicians refer the scaphoid bone as?

A

the navicular

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8
Q

What are the distal row carpals from lateral to medial?

A

Trapezium
trapezoid
capitate
hamate

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9
Q

What bone does the trapezium has a separate saddle joint articulation?

A

first metacarpal

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10
Q

Which distal row metacarpal is centerline of hand?

A

capitate

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11
Q

Which muscle is the hamate attached and how?

A

flexor retinaculum

it is attached by a hook (hamulus)

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12
Q

What does the base of the Metacarpals articulate with?

A

distal carpal bones

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13
Q

What does the head of the metacarpals articulate with?

A

proximal phalanges

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14
Q

Where is the motion in the carpometacarpal joint?

A

articulations with the base of metacarpals and distal carpals
little motion for digits 2-5

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15
Q

What permits movement in all three planes?

A

the carpometacarpal joint of digit 1 is a saddle joint

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16
Q

What are the phalanges for digit 1?

A

two

proximal and distal

17
Q

What does the Metacarpophalageal joint allow for in digit 2-5?

A

flexion/extension

abduction and adduction is present but limited in flexion

18
Q

What are the phalanges of 2-5?

A

proximal
middle
distal

19
Q

What does the two interphalgeal joints of digits 2-5 only allow for?

A

flexion and extension

20
Q

What allows for supination and pronation at the radioulnar joint?

A

The triangular fibrocartilage and associated ligaments

21
Q

What are the hand joints?

A 
radiocarpal 
intercarpal 
common carpometacarpal (2-5)
first carpometacarpal 
interphalageal joints
22
Q

Which digit has the greatest range of motion?

A

5th digit

23
Q

What does flexion of the wrist of the wrist require?

A

both radiaocarpal and inter carpal joints

60% intercarpal 40% radio carpal

24
Q

What does extension of he wrist require?

A

60% radiocarpal 40%intercarpal

25
Q

What does adduction and abduction of the wrist require?

A

rotation of scaphoid and lunate

scaphoid and triqoetrium around a central axis

hand (11 decks)

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