Classification of Joints

Question 1

Fibrous Joints

Answer 1

• little permissible movement
• joined by fibrous connective tissue
• e.g.: sutures of the skull

Question 2

Cartilaginous Joints / Synchondroses

Answer 2

TWO TYPES: Hyaline & Fibrocartilage

Question 3

Hyaline

Answer 3

Primary joint

• when a bar of hyaline cartilage joins two bones
• e.g.: joint between the ribs and sternum

Question 4

Epiphysyeal Plates are examples of…

Answer 4

hyaline joints

Question 5

Fibrocartilage

Answer 5

Secondary Joints

-e.g.:intervertebral discs of vertebral column

Question 6

Synovial Joints

Answer 6

provide free and easy movement

Question 7

Articular Cartilage

Answer 7

feature of synovial joint

• hyaline cartilage
• smooth and friction free

Question 8

Synovial Membrane + Fluid

Answer 8

also known as synovial capsule

• reates joint space
• secretes synovial fluid, lubricates cartilage covered surfaces

Question 9

Fibrous Capsule

Answer 9

provides stability to joint

-located superficially to synovial capsule, made of dense connective tissue

Question 10

Ligaments (function of)

Answer 10

• restrict movement around joint

- connect bone to bone

Question 11

Discs

Answer 11

• shock absorber
• aligns bony surfaces
• allows for complex movement
• example: dics in acromioclavicular joint

Question 12

Uni-Axial Joint

Answer 12

only moves in one plane

• hinge: elbow, knee
• pivot: proximal radioulnar joint

Question 13

Bi-Axial Joint

Answer 13

move in two planes

-knuckles and wrist

Question 14

Multi Axial Joint

Answer 14

most mobile and easily damaged joints, permits movement in all directions

Question 15

Ball + Socket

Answer 15

multi axial joint

-hip and shoulder joint

Question 16

Saddle Joint

Answer 16

base of the thumb

-person in saddle can bend forward, lean sideways, swivel

Question 17

Planar Joints

Answer 17

permit sliding between two relatively flat surfaces, limited twisting
-apophyseal/facet joints