Chapter 15: Types of Joints

The classifications of joint and examples of each

Joint

Where two or more bones meet

Main types of Joints

Fibrous, Cartilaginous, Synovial

Fibrous Joint

Held together by fibrous material, no joint cavity

ex. Cranium sutures, tooth sockets, tibiofibular joints, interosseous (between length of ulna-radius)

Cartilaginous Joints

Joined by cartilage, no joint cavity

ex. vertebral disks, pubis symphysis, epiphyseal plates

Synovial Joints

Fluid filled joint cavity, has articulation

ex. shoulder, wrist, knee, thumb

Spheroidal Joint

aka ball and socket joint

Ball at one bone fits into socket of another

Triaxial

ex. humerus in glenoid cavity (hip)

Arthrodial Joint

aka Gliding joint

Connects flat/slightly curved bone surfaces that glide

Non-axial

ex. between tarsals, among carpals

Ginglymus Joint

aka hinge joint

Convex part of one bone fits into concave part of another

Uniaxial

ex. joint between ulna + humerus

Trochoid

aka pivot joint

Rounded part of one bone fits into groove of another

ex. joint between C1-C2

Saddle Joint

Not rotation, movement in two planes

Flexion/extension + abduction/adduction

Biaxial

ex. capo-metacarpal articulation of thumb

Ellipsoid Joint

Biaxial

ex. knuckle joints, wrist joints