Joint Types

Question 1

What are the different types of synovial joints? And give an example of where they are found

Answer 1

Planar (b/w tarsals)

Hinge (b/w humerus and the ulna)

Pivot (b/w vertebrae)

Ellipsoidal / Condyloid (b/w metacarpals and phalanx)

Saddle (b/w metacarpals and carpals)

Ball and socket (b/w hip and femur)

Question 2

Types of joints that are solid joints

Answer 2

Fibrous

Cartilaginous

Question 3

Example of fibrous joints

Answer 3

Sutures: Skull
Synostosis: ossified (bone formed) suture that is immoveable (usually abnormal fusion of two bones)

Syndesmosis: sheet of fibrous tissue between bones (e.g. interosseous membrane between the tibia and fibula)

Gomphosis: teeth

NO MOVEMENT

Question 4

Example of cartilaginous joints

Answer 4

Symphysis - connected by fibrocartilage e.g. IV discs and pubic symphysis

Synchrondosis - hyaline cartilage connection (joints with epiphyseal growth plates I.e. long bones, costochondral joints (ribs to sternum))

LITTLE OR NO MOVEMENT

Question 5

What does it mean to be a solid joint?

Answer 5

No synovial cavity

Question 6

What are sutures?

Answer 6

A type of fibrous joint that is only found in the skull

Question 7

What are the different cranial sutures?

Answer 7

Metopic (bindi)
Coronal (front 3rd, either side of the anterior fontanelle)

Saggital

Lambdoid (closer to the back of the head, either side of the posterior fontanelle)