CLASSIFICATIONS of the Synovial Joint Movements - Types of DIARTHROSIS Joints - under major classification

There are six dif. classifications of THE SYNOVIAL JOINTS which have MOVEMENT specifically —- meaning that we are focusing under the Diarthrosis classification of articulations / joints

Diarthrosis articulations is synonymous with Synovial Joints

The six different classifications of the SYNOVIAL JOINT MOVEMENTS 😀

• Plane (gliding)

• Hinge

• Condylar (ellipsoid

• Saddle

• Pivot

• Ball-and-socket

Plane J (gliding movement)

is when two FLATTENED or SLIGHTLY CURVED SURFACES Move against each other

Plane J limits movement / motion

;

When it comes to the FEET Specifically it ALLOWS for INVERSION AND EVERSION Movement

ex:

- CARPAL BONE - wrist

- TARSALS - foot

- CLAVICLE - collarbone

- ACROMION - part of your scapular

Hinge Joint - allows for Flexion and Extension Movement

more of an ANGULAR MOVEMENT

generally is between a Convex and Concave Shape!

Allows for Flexion and Extension

EX: TROCHLEAR of the Humorous upper arm bone and it articulates with the TRACHLEAR Notch of the Ulna forearm bone

when these ARTICULATE with eo then it ALLOWS for FLEXION OF THE ARM

Condylar Joint

Between a Shallow Depression and a Rounded Structure

allows for a COMBINATION of things

FLEXION, EXTENSION, ABDUCTION, ADDUCTION movement, and EVEN CIRCUMDUCTION Movement

ex: joints of toes, knuckles, joints of fingers,

ex: more specific - distal end of the radius ARTICULTES with certain Carpal bones like the scaphoid, lunate, and triquetrum. - which are ALL CARPAL Bones

Saddle Joint

(which are joints that fit together like a saddle)

Saddle joint allows for the FLEXION/EXTENSION, Abduction/adduction and circumduction Movement

ex:

sterno clavicular joint - sternum with ribs off of it

trapezium - carpal bone and 1st meta carpal bone in hand

Pivot Joint

means the TURNING or ROTATIONAL MOVEMENT

ex: C1 and C2 Vertebrae C1 - Atlas C2 - Axes (lab) component

Ball - and Socket JOint

Has a Round head that SITS in a CUP-SHAPED DEPRESSION

ex: Hip and Shoulder Joint

hip - head of femur that articulates with the

Head of Humerus which articulates with the region called glenoid cavity/fossa - fossa = depression
part of scapular / shoulder blade