Joints Classified by Shapes and Motions Allowed

Question 1

Translators motion across flat joint surfaces in opposition

Answer 1

Plane synovial joint

Question 2

Plane synovial joint example

Answer 2

Zygapophyseal joint

Question 3

Unilateral joint allowing motion with one degree of freedom

Answer 3

Ginglymus (hinge) joint

Question 4

Ginglymus joint example

Answer 4

Elbow joint

Question 5

Joint that only allows (uniaxial) rotation of a bone around a single axis

Answer 5

Trochoid (pivot) joint

Question 6

Trochoid joint examples

Answer 6

• Medial atlantoaxial joint
• Radioulnar joint

Question 7

Joint with two convex condyles articulating with two concave joint surfaces

Answer 7

Bicondyloid joints

Question 8

Bicondyloid joint movement

Answer 8

Mostly uniaxial with some rotatory movement

Question 9

Bicondyloid joint examples

Answer 9

• Femoral condyles and tibial plateau
• Temperomandibular joint
• Atlantooccipital joint

Question 10

Oval ellipsoid convex surface articulates with oval ellipsoid concave surface

Answer 10

Ellipsoid (condyloid) joints…😑

Question 11

Ellipsoid joint movement

Answer 11

Biaxial (flex and extend, adduct and abduct)

Question 12

Ellipsoid joint examples

Answer 12

• Distal radius with scaphoid
• Lunate in wrist

Question 13

Two concave-convex surfaces articulating with each other

Answer 13

Sellar (saddle) joints

Question 14

Sellar (saddle) joint movement

Answer 14

Multiaxial

Question 15

Sellar (saddle) joint example

Answer 15

Pollical carpometacarpal (thumb) joint

Question 16

Three degrees of freedom of motion, contain ball and socket

Answer 16

Spheroidal joint

Question 17

Spheroidal joint examples

Answer 17

• Glenohumeral joint
• Hip joint