Joint Classifications Part III

Question 1

What type of movement occurs in a pivot joint?

Answer 1

Rotation (e.g., radioulnar joint, C1-C2 vertebrae).

Question 2

What type of movement occurs in a condylar joint?

Answer 2

Flexion, extension, and rotation when flexed (e.g., knee, TMJ).

Question 3

What type of movement occurs in an ellipsoid joint?

Answer 3

Flexion, extension, abduction, adduction, and circumduction (e.g., wrist joint).

Question 4

What type of movement occurs in a saddle joint?

Answer 4

Flexion, extension, abduction, adduction, circumduction, and opposition (e.g. opposable thumb joint).

Question 5

What type of movement occurs in a ball & socket joint?

Answer 5

Flexion, extension, abduction, adduction, circumduction, and rotation (e.g., shoulder, hip).

Question 6

Which synovial joint feature ensures smooth, frictionless movement?

Answer 6

Hyaline (articular) cartilage

Question 7

Which synovial joint feature holds bones together?

Answer 7

Joint capsule and ligaments.

Question 8

What influences the possible movements at a joint?

Answer 8

Bone shape, ligament location/length, and body surface contact.