Joints

Question 1

What is the most easily dislocated joint in the body?

Answer 1

Glenohumeral Joint (Shoulder) - the more mobile a joint is, the easier it is to dislocate

Question 2

What are the ligaments in the glenohumeral joint?

Answer 2

Coracohumeral Ligament

Transverse Humeral Ligament

Glenohumeral Ligament (AKA Capsular Ligaments)

Question 3

What are the attachments of the coracohumeral ligament?

Answer 3

Coracoid process to the greater tubercle of the humerus

Question 4

What are the attachments of the transverse humeral ligament?

Answer 4

Spans the greater and lesser tubercles of the humerus and holds the tendon of the long head of the biceps in place

Question 5

What are bursae?

Answer 5

They are small fluid-filled sac lined by synovial membrane with an inner capillary layer of viscous fluid that allow greater ease of movement.

Question 6

What are the attachments of the glenohumeral ligament?

Answer 6

Supraglenoid tubercle to the lesser tubercle of the humerus

Question 7

What is the glenoid labrum?

Answer 7

A fibrocartilaginous ligament surrounding the margin of the glenoid cavity and it deepens the socket

Question 8

What are the ligaments in the acromioclavicular joint?

Answer 8

Acromioclavicular Ligament

Coracoclavicular Ligament

Question 9

What are the attachments of the acromioclavicular ligament?

Answer 9

Acromion to the clavicle

Question 10

What are the attachments of the coracoclavicular ligaments?

Answer 10

Coracoid process to the clavicle and they help to stabilize the clavicle

Question 11

Besides ligaments, what else serves to stabilize the shoulder joint?

Answer 11

Tendons of the rotator cuff muscles

Question 12

What are the ligaments in the humero-ulnar joint?

Answer 12

Ulnar Collateral Ligament of the Elbow

Question 13

What are the ligaments of the humeroradial joint?

Answer 13

Radial Collateral Ligament of the Elbow

Question 14

Attachments of the ulnar collateral ligament of the elbow.

Answer 14

Medial epicondyle to the coronoid process of the ulna and the olecranon of the elbow

Question 15

Attachments of the radial collateral ligament of the elbow.

Answer 15

Lateral epicondyle to the radial notch of the ulna and annular ligament (Relatively weak)

Question 16

What are the ligaments in the proximal radio-ulnar joint?

Answer 16

Annular Ligament

Question 17

Attachments of the annular ligament.

Answer 17

Surrounds the radial head and the radial notch of the ulna and keeps the head of the radius on the notch.

Question 18

What are the joints in the wrist?

Answer 18

Distal Radio-ulnar Joint

Radiocarpal Joint

Ulnarcarpal Joint

Intercarpal Joints

Question 19

What are the ligaments of the distal radio-ulnar joint?

Answer 19

Palmar Radioulnar Ligament

Dorsal Radioulnar Ligament

Question 20

What is the function of the palmar and dorsal radioulnar ligaments?

Answer 20

They extend transversely between the radius and ulna and the articular disc binds the bones together.

Question 21

What are the ligaments of the radiocarpal joint?

Answer 21

Palmar (Volar) Radiocarpal Ligament

Dorsal Radiocarpal Ligament

Radial Collateral Ligament of the Wrist

Question 22

What are the ligaments of the ulnar carpal joint?

Answer 22

Ulnocarpal Ligament

Ulnar Collateral Ligament of the Wrist

Question 23

What are the attachments of the ulnocarpal ligament?

Answer 23

Dorsal: styloid process of the ulna to the medial side of the triquetrum

Palmar: styloid process of the ulna to the pisiform and flexor retinaculum

Question 24

What are the attachments of the ulnar collateral ligament of the wrist?

Answer 24

Ulna to the triquetrum and pisiform

Question 25

What is the function of the intercarpal joints in the wrist?

Answer 25

They are synovial plane joints that allow sliding and gliding movements.

Question 26

What are the attachments of the CMC joints?

Answer 26

M = Metacarpal M2:Trapezoid M3:Capitate M4:Hamate M5:Hamate

Question 27

What are the attachments of the TMC?

Answer 27

M1:Trapezium

Question 28

What type of joint is the TMC?

Answer 28

Biaxial saddle joint

Question 29

What are the attachments of the metacarpophalangeal joints?

Answer 29

Metacarpals to their respective phalanges

Question 30

What is the function of interphalangeal joints?

Answer 30

They allow limited flexion and extension and do not allow any other movements (side to side movement of these joints is bad and abnormal)

Question 31

What are the joints of the shoulder?

Answer 31

Glenohumeral Joint Acromioclavicular Joint

Question 32

What are the joints of the elbow?

Answer 32

Humeroulnar Joint Humeroradial Joint Proximal Radioulnar Joint Interosseus Membrane

Question 33

What are the joints of the wrist?

Answer 33

Distal Radioulnar Joint Radiocarpal Joint Ulnarcarpal Joint Intercarpal Joints

Question 34

What are the joints of the hand?

Answer 34

Carpometacarpal Joints (CMCs) Trapeziometacarpal Joint (TMC) Metacarpophalangeal Joints Interphalangeal Joints

Question 35

What structure holds the head of the radius in place, allowing for pronation and supination if the forearm?

Answer 35

Annular Ligament

Question 36

Which ligament holds the long head of the biceps in place?

Answer 36

Transverse Humeral Ligament

Question 37

How is the interosseus membrane a joint?

Answer 37

It is a fibrous joint that unites the radius and the ulna and it divides the forearm into anterior and posterior compartments.