4 Bones of the hand and wrist Flashcards

1
Q

What are the three catergories of bones in the hand?

A

Carpal
Metacarpal
Phalanges

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2
Q

How many carpal bones are there?

A

8

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3
Q

What are the carpal bones of the proximal row? (lateral to medial)

A

Scaphoid
Lunate
Triquetrum
Pisiform

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4
Q

What is the pisifrom?

A

A sesamoid bone formed with the tendon of the flexor carpi ulnaris?

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5
Q

What are the carpal bones of the distal row? (lateral to medial)

A

Trapezium
Trapezoid
Capitate
Hamate

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6
Q

What do the metacarpals articulate with?

A

Proximal: distal row of carpal bones
Distal: Proximal phalanges

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7
Q

How are the metacarpals named?

A

Numbered I to V with thumb being metacarpal I

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8
Q

Which bone does metacarpal I articulate with proximally?

A

Trapezium

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9
Q

Which bone does metacarpal II articulate with proximally?

A

Trapezoid

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10
Q

Which bone does metacarpal III articulate with proximally?

A

Capitate

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11
Q

Which bone does metacarpal IV articulate with proximally?

A

Hamate

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12
Q

Which bone does metacarpal V articulate with proximally?

A

Hamate

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13
Q

What are the three main parts of metacarpals?

A

Base, shaft, head

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14
Q

What shape are the medial and lateral surfaces of the metacarpals?

A

Concave to allow for attchment of interossei muscles

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15
Q

How many phalanges does the thumb have?

A

Two, proximal and distal phalanx

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16
Q

How many phalanges do the digits have?

A

Three, proximal, middle and distal phalanx

17
Q

What are the names of the digits?

A

Thumb
Index finger
Middle finger
Ring finger
Little finger