Skeletal System: Types of Joints in the Body

Joints/Articulations

• Where two bones meet

• Some are movable and some are immobile

  • Ex. Immobile = Skull joints, Pubic Symphysis

  • Ex. Movable joints – knee, shoulder, hip, etc.  

    • Synovial Joints 

Synovial membrane and synovial fluid lubricate the joint

• Advantage:  Large range of motion

• Disadvantage:  Easily damaged because so mobile

What Holds Joints Together?

Tendons & Ligaments

Ball-and-socket

Hip, shoulder

Pivot

• Between Atlas(C-1) and Axis (C-2).

• Allows side to side movement.

• This is what allows you to make the “no” shake of your head

Hinge

Joint between the Occipital bone and the atlas (C-1) ; allows the up and down movement “yes”

Saddle

Carpometacarpal joint of the thumb; allows flexion / extension, abduction / adduction

Gliding

Between carpal bones, between vertebrae

Join Picture