Back Arthrology

Question 1

Synovial joint types (5)

Answer 1

Planar 
Ginglymus (Hinge)
Trochoid (Pivot)
Condyloid
Sellar (Saddle)
Speroidal (Ball and socket)

Question 2

Planar joint

Answer 2

Allows sliding movement.

ex: acromioclavicular joint

Question 3

Ginglymus (Hinge)

Answer 3

Allows flexion and extension only.

ex: elbow joint

Question 4

Trochoid (Pivot)

Answer 4

Allows for pivoting.

ex: atlantoaxial joint, proximal radioulnar joint.

Question 5

Condyloid joint

Answer 5

Biaxial. Allows for flexion/extension and abduction/adduction.
ex: metacarpophalangeal joint

Question 6

Sellar (Saddle) joint

Answer 6

Biaxial. Allows for flexion/extension and abduction and adduction, but is capable of false curcumduction without rotation.
ex: carpometacarpal joint

Question 7

Spheroidal (Ball and Socket) joint

Answer 7

Multiaxial. Fits like ball and socket.

ex: hip joint

Question 8

Fibrous joint types (4)

Answer 8

Suture joint
Gomphosis
Schindylesis
Syndesmosis

Question 9

Suture joint

Answer 9

Joining of two skull bones.

Question 10

Gomphosis

Answer 10

Peg-in-socket.

ex: teeth

Question 11

Syndesmosis

Answer 11

Two bones separates by filamentous cartilage.

ex: radius and ulna

Question 12

Cartilaginous joint types (2)

Answer 12

Synchondrosis

Symphysis

Question 13

Synchondrosis

Answer 13

Usually transient (while bone is growing, then bone fuses and joint is gone). Few exceptions.

Question 14

Sympysis

Answer 14

Bone-cartilage-bone.

Vertebral body-disk-vertebral body.

Question 15

Compound joint

Answer 15

More than one joint.

Question 16

Ligaments of vertebra (5)

Answer 16

Supraspinous L.
Intraspinous L.
Ligamentum Flavum
Aneterior longitudinal L.
Posterior longitudinal L.