3 L9 Elbow, Forearm and Hand

Question 1

What bones contribute to elbow joint

Answer 1

Humerus - Ulna - Radius

Question 2

3 joints contained inside the elbow common capsule

Answer 2

Humeroulnar - Radiohumeral - Proximal radioulnar joint

Question 3

Describe the Humeroulnar joint

Answer 3

Trochlea (humerus- convex) - Trochlea notch (ulna- concave) - Good bony congruency

Question 4

Describe the Radiohumeral joint

Answer 4

Capitulum (humerus- convex) - Head of radius- convex - Less bony congruency

Question 5

Elbow joint type and movements

Answer 5

Synovial- Hinge - Flexion and Extension

Question 6

What attaches to the olcreon process

Answer 6

Triceps

Question 7

What articulates with the radial notch

Answer 7

Radial head

Question 8

What attaches to the radial tuberosity

Answer 8

Biceps brachii

Question 9

What attaches to the ulnar tuberosity

Answer 9

Brachialis

Question 10

Bony components of proximal radioulnar joint

Answer 10

Head of radius - Radial notch

Question 11

Proximal radioulnar congruency and associated ligament

Answer 11

Poor- reliant on the annular ligament for stability

Question 12

Proximal radioulnar joint type and movement

Answer 12

Synovial- Pivot - Rotation (supination and pronation of forearm)

Question 13

Describe annular ligament

Answer 13

Laxity in childhood - Yanking movements can dislocate head of radius

Question 14

Two collateral ligaments

Answer 14

Radial (lateral) - Ulnar (medial)

Question 15

Describe the elbow joint capsule and ligaments

Answer 15

Outer fibrous, Inner synovial - Large, loose, weak - Blends with annular ligament - Has no direct attachment to radius

Question 16

What does the radial ligament restrict

Answer 16

Varus forces

Question 17

What does the medial ligament restrict

Answer 17

Valgus forces

Question 18

Middle radioulnar joint type

Answer 18

Fibrous

Question 19

Distal radioulnar joint type

Answer 19

Synovial- Pivor

Question 20

Pronator muscles

Answer 20

Pronator teres - Pronator quadratus

Question 21

Supinator muscles

Answer 21

Biceps brachii - Supinator

Question 22

Describe the structure of carpal wrist bones

Answer 22

Two rows that form the carpal arch

Question 23

Intercarpal joint type

Answer 23

Synovial- Plane joints

Question 24

Carpal bone names

Answer 24

Proximal- Scaphoid, Lunate, Triquetrum, Pisiform
Distal- Trapezium, Trapezoid, Capitate, Hamate

Question 25

Most commonly injured carpal bone

Answer 25

Scaphoid

Question 26

What bones form the hand

Answer 26

Metacarpals and phalanges

Question 27

Wrist (radiocarpal) joint type and movement

Answer 27

Synovial- Ellipsoid - Circumduction (all movements)

Question 28

Where are the radial and ulnar collateral ligaments found

Answer 28

Wrist and elbow joints

Question 29

Interphalangeal joint type and movements

Answer 29

Hinge- Flexion and Extension

Question 30

Metacarpophalngeal joint type and movements

Answer 30

Ellipsoid- Circumdation and all that it entails

Question 31

Carpometacarpal joint 1 (thumb) joint type and movement

Answer 31

Synovial- Saddle- Opposition

Question 32

Intrinsic hand muscles names and function

Answer 32

Thenar- moves thumb Hypothenar- moves little finger Interossei- ab/adduction of digits

Question 33

Anterior muscle function

Answer 33

Flexor of wrist and hand- Stabilises elbow

Question 34

Anterior nerve

Answer 34

Median (mostly) - Ulnar

Question 35

Anterior blood supply

Answer 35

Radial and ulnar artery/vein

Question 36

Posterior muscle function

Answer 36

Extensors of wrist/hand - Stabilises elbow

Question 37

Posterior nerve

Answer 37

Radial

Question 38

Posterior blood supply

Answer 38

Posterior interosseous artery/vein

Question 39

Carpal tunnel structure

Answer 39

Floor- carpal bones Roof- flexor retinaculum

Question 40

What passes through the carpal tunnel

Answer 40

Median nerve - Long flexor tendons that go to fingers and thumb

Question 41

What do extender tendons pass under at the wrist

Answer 41

Extensor retinaculum

Question 42

What nerve mostly supplies the anterior compartment of the forearm

Answer 42

Median nerve

Question 43

What nerve mostly supplies the intrinsic muscles of the hand

Answer 43

Ulnar nerve

Question 44

What does the radial nerve supply

Answer 44

Posterior compartments of arm and forearm

Question 45

Describe how and where the brachial artery branches

Answer 45

Branches just below elbow joint into radial and ulnar arteries