Ch 4 Anatomy of the Hand and Wrist

Pataasin ang iyong marka sa homework at exams ngayon gamit ang Quizwiz!

how do we radiograph the thumb?

because the first metacarpal is considered part of the thumb, it must be included in the radiograph; from the distal phalanx to the base of the first metacarpal

proximal interphalangeal joint (PIP)

between proximal and middle phalanges

WHICH CARPAL DOES THIS METACARPAL ARTICULATE WITH? third metacarpal

capitate

what is the largest carpal bone?

capitate

what are the third and most proximal bones of the hand/wrist?

carpals

what do we call each finger/thumb?

digits

digit 2

index finger

what are the most distal bones of the hand?

phalanges

what is the singular term of phalanges?

phalanx

digit 1

thumb

what phalanges are on digit 1?

1. proximal 2. distal

what carpal bones are included in the proximal row?

- scaphoid - lunate - triquetrum - pisiform

what carpal bones are included in the distal row?

- trapezium - trapezoid - capitate - hamate

metacarpophalangeal joint (MCP)

connects metacarpals to the proximal phalanges; list digit # before naming joint

what are the four main groups of bones in the upper limb?

1. hand and wrist* 2. forearm* 3. arm (humerus) 4. shoulder girdle

what parts make up the metacarpal?

1. head (distal end) 2. body 3. base (proximal end, articulates with carpals)

what are the parts of each phalanx?

1. head (distal) 2. body (shaft) 3. base (proximal)

what are the names of the phalanges?

1. proximal (nearest to wrist) 2. middle 3. distal (farthest from wrist)

how are metacarpals numbered?

1. thumb area- metacarpal 1 2. index finger area- metacarpal 2 3. middle finger area- metacarpal 3 4. ring finger area- metacarpal 4 5. pinky finger area- metacarpal 5

how many bones do your phalanges (fingers and thumb) have?

14

how many phalanges does digit 1 have?

2

how many total bones are in your hand and wrist?

27

how many joints do the phalanges of digits 2-5 have?

3

how many phalanges are the digits 2-5 composed of?

3

how many bones do metacarpals (palm) have?

5

how many metacarpals are there?

5

how many bones do carpals (wrist) have?

8

break card

:)

carpometacarpal joint (CMC)

between the distal row of carpal bones and the metacarpal bones

WHICH CARPAL DOES THIS METACARPAL ARTICULATE WITH? fifth metacarpal

hamate

WHICH CARPAL DOES THIS METACARPAL ARTICULATE WITH? fourth metacarpal

hamate

what is the hook-like process on the hamate called?

hamulus

distal interphalangeal joint (DIP)

joint between middle and distal phalanges

interphalangeal (IP) joint

joint between proximal and distal phalanges of the first digit

first metacarpophalangeal (MCP) joint

joint between the first metacarpal and the proximal phalanx of the thumb

the second group of bones (palm) in the hand?

metacarpals

digit 3

middle finger

digit 5

pinky finger

what is the smallest carpal bone?

pisiform

what does the lunate articulate with?

radius

what does the scaphoid articulate with?

radius proximally

digit 4

ring finger

what is the largest bone in the proximal row of the carpals?

scaphoid

what is the most frequently fractured carpal bone?

scaphoid

WHICH CARPAL DOES THIS METACARPAL ARTICULATE WITH? first metacarpal

trapezium

carpal bones

trapezium, trapezoid, capitate, hamate, scaphoid, lunate, triquetrum, pisiform

WHICH CARPAL DOES THIS METACARPAL ARTICULATE WITH? second metacarpal

trapezoid

what is the smallest bone in the distal carpal row?

trapezoid


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