Upper Limb II Flashcards Preview

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Flashcards in Upper Limb II Deck (28):
1

Describe what 5 things make up the forearm

Radius, Ulna, Carpals, Metacarpals, Phalanges

2

Describe the position of the ulna

lies medially on the side of the little finger

3

Describe the olecranon process of the ulna

found at the posterior proximal end of the ulna, forms the prominence of the elbow, this along with the coronoid process articulates with the trochlea of the humerus

4

Describe the coronoid process of the ulna

an anterior projection, this along with the olecranon process articulates with the trochlea of the humerus

5

Describe the trochlear notch of the ulna

the curved area lying between the olecranon process and the coronoid process, receives the trochlea of the humerus

6

Describe the radial notch of the ulna

a depression located laterally and inferiorly to the trochlear notch, receives the head of the radius

7

Describe the ulnar tuberosity

inferior to the coronoid process, provides a point of attachment for biceps brachii muscle

8

Describe the distal end of the ulna

consists of a head that is separated from the bones of the wrist by fibrocartilage disc

9

Describe the styloid process of the ulna

at the distal end, on posterior aspect

10

Describe the radius

smaller lateral bone of the forearm, located on the side of the thumb

11

Describe the head of the radius

disc-shaped, found at proximal end of radius, articulates with the capitulum of the humerus and the radial notch of the ulna

12

Describe the neck of the radius

inferior to the head of the radius, constricted area

13

Describe the radial tuberosity

inferior to the neck of the radius on the medial side, raised roughened area, point of attachment for tendon of biceps branchii muscle

14

Describe the shaft of the radius

widens distally to form a concave inferior surface, articulates with the lunate and the scaphoid bones of the wrist

15

Describe the styloid process of the radius

at the distal end, on lateral border, can be palpated just proximal to the thumb

16

Describe the ulnar notch of the radius

concave, medial, articulates with the distal end of the ulna

17

Describe the articulations at the elbow joint

head of the radius articulates with the capitulum of the humerus, trochlea notch of the ulna articulates with the trochlea of the humerus

18

Describe the articulations between the radius and the ulna

Between the shafts of the 2 bone there is an interosseous membrane (a sheet of fibrous connective tissue) - site of attachment for some of the tendons of the forearm,
Proximally the head of the radius articulates with the radial notch of the ulna forming the proximal radioulnar joint
Distally the head of the ulna articulates with the ulnar notch of the radius forming the distal radioulnar joint

19

Describe which 3 carpal bones the distal end of the radius articulates with

lunate, scaphoid, triquetrum - forms the radoiocarpal joints

20

Describe the Colles Fracture - 3 points

a fall on an outstretched hand causing the radius to bear the brunt of the force transmitted through the hand resulting in a transverse fracture of the distal radius, hand is displaced backwards & upwards

21

Describe the Smiths Fracture (or 'reverse Colles') - 4 points

injury to the radius near the wrist joint, bone is displaced so the wrist joint rests in front of its normal anatomical position, most commonly due to a fall onto the back of the hand, Smith's Fracture = quite unstable, almost always needs fixation by some method (ORIF)

22

Describe the 8 carpals of the wrist

lay in the proximal region of the hand, 2 transverse rows of 4, joined together with ligaments and articulate with each other at interracial joints, mostly the scaphoid that gets broken due to force of fall being transmitted form the capitate through the scaphoid into the radius

23

Name the 4 proximal carpal bones from lateral to medial

scaphoid, lunate, triquetrum, pisiform

24

Name the 4 distal carpal bones from lateral to medial

trapezium, trapezoid, capitate, hamate

25

Describe the metacarpals of the hand - 5 points

5, form the intermediate area of the hand, number I-V beginning with the thumb moving from lateral to medial, each consist of a proximal base/intermediate shaft/distal head

26

Describe the articulations of the metacarpals of the hand

the bases articulate with the carpal bones forming the carpometacarpal joints
the heads articulate with the phalanges forming the metacarpalphalangeal joints

27

Describe the phalanges of the hand

make up the 5 fingers, in total = 14 phalanges in 5 digits because the thumb has 2 and the other 4 fingers have 3, labelled I-V, each phalanx has a proximal base/intermediate shaft/distal head

28

Name the joints between the phalanges

the interphalangeal joints