Elbow

Question 1

Articulations in the elbow

Answer 1

Humeroulnar joint
Radiohumeral joint
Proximal radioulnar joint (not strictly involved in elbow flex/ext)

Question 2

What type of joint is the humeroulnar joint

Answer 2

Uniaxial hinge joint

Question 3

What is the humeroulnar joint formed by..

Answer 3

the trochlea notch of ulnar and the trochlea of humerus

Question 4

Surface shape of humeroulnar joint

Answer 4

Saddle shaped
Concave in the sagittal plane
Convex in the frontal

Question 5

Superior radioulnar joint articular surface

Answer 5

Convex, cyclindrical shaped rim of the radial head

Concavityof the radial notch of the ulnar and annular ligament

Question 6

What type of joint is the radiohumeral joint

Answer 6

Triaxial ball and socket

Question 7

What does the radiohumeral joint lie between…

Answer 7

Capitulum of the humerus

Radial head

Question 8

Movements at the radiohumeral joint

Answer 8

Flexion-extension
Pronation-supination

Question 9

Name the ligaments in the elbow joint

Answer 9

Ulna collateral
Lateral ular collateral
Radial collateral ligament
Annular ligament

Question 10

Ulna collateral ligament

Answer 10

Runs on the inner side of the elbow

Connects inside of humerus to the inside fo your ulna and helps stabilse your arm

Question 11

Elbow flexion

Answer 11

Biceps
Brachialis
Brachioradialis

Question 12

Biceps brachi
Origin and insertion

Answer 12

Origin- short head - coracoid process
Origin - long head- supraglenoid tubercle and lip of glenoid cavity

Insertion- common tendon into radial tuberosity

Question 13

Brachialis
Origin and insertion

Answer 13

O - anterior surface of distal humerus; embraces insertion of deltoid muscle

I - coronoid process of ulna and capsule of elbow joint

Question 14

Brachioradialis
Origin and insertion

Answer 14

O- lateral supracondylar ridge at the distal end of humerus

I - base of radial styloid process

Question 15

Elbow extension

Answer 15

Triceps brachii
Anconeus

Question 16

Triceps brachi
Origin and insertion

Answer 16

O (long head)- infraglenoid tubercel of scapula
O (lateral head) - posterior shaft of humerus
O (media head) - posterior humeral shaft distal to radial groove

I - by the common tendon into the olecranon of ulna

Question 17

Anconeus
Origin and insertion

Answer 17

O - lateral epicondyle of humerus
I - Lateral aspect of olecranon of ulna

Question 18

Pronator muscles

Answer 18

Pronator teres
Pronator quardatus
Brachioradialis

Question 19

Pronator teres
Origin and insertion

Answer 19

O - medial epicondyleof humerus; coronoid process of ulna

I - by common tendon into lateral radius midshaft

Question 20

Pronator quadratus
Origin and insertion

Answer 20

O - distal portion of anterior ulnar shaft
I - distal surface of anterior radius

Question 21

Supination muscles

Answer 21

Supinator
Biceps brachii
Brachioradialis

Question 22

Supinator muscle

Answer 22

O - lateral epicondyle of humerus; proximal ulna

I - proximal end of radius

Question 23

Annular ligament

Answer 23

Stabilises the radial head within the radial notch of the ulnas it rotates during suprination and pronation of the forearm.

Question 24

Lateral ulnar collateral ligament

Answer 24

Static stabiliser of the elbow joint and as a primary restraint to varus fromace external rotatory stress

Question 25

Radial collateral ligament

Answer 25

Connects form the humerus to the radius

Stabilse against inner to outer stress

Question 26

Normal movment ranges - flexion

Answer 26

Males - 145
Females - 150

Question 27

Normal movmeent ranges - extension

Answer 27

Males- 1
Females - 5

Question 28

Normal movement ranges- pronation

Answer 28

males - 77
Females - 82

Question 29

Normal movement ranges-
Supination

Answer 29

males - 85
Females- 91

Question 30

Conditions of the elbow/forearm

Answer 30

Arthropathy (eg OA, RA, gout)
Traumatic injuries (eg fractures, dislocations)
Tennis elbow
Golfer’s elbow
Ulnar neuritis/entrapment (cubital tunnel syndrome)
Olecranon bursitis