Diarthrosis (synovial Joints)

Question 0

Condyloid

Answer 0

• Moves in all planes, but no rotation
• knuckles: joint between metacarpals and phalanges
• oval shaped condyle of one bone fits into oval shaped cavity of another bone

Question 1

Ball and socket joint

Answer 1

• Shoulder, hip
• circular movements
• moves in all planes
• rotation
• the ball shaped head of one bone fits into a depression of another bone

Question 2

Gliding joint

Answer 2

• Sliding and twisting in different planes
• joints between carpal bones (wrist ) and tarsal bones (ankle )
• flat or slightly curved surfaces join

Question 3

Hinge joint

Answer 3

• Convex surface joins with concave surface
• up and down motion in one plane (flex or extend)
• knee, elbow

Question 4

Pivot joint

Answer 4

• Cylinder shaped projection on bone is surrounded by a ring of another bone and ligament
• rotation is only movement possible
• joint between radius and ulna at elbow and axis at top of vertebral column

Question 5

Saddle joint

Answer 5

• Saddle shaped bones fits into the saddle shaped region of the opposite bone
• Can move in different planes but cannot rotate
• joint between carpal and metacarpal bones of the thumb