Unit 1 Anatomy- Types of joints

what are the two joint categories of

synarthroses

diarthroses

types of synarthrodial joints

fibrous and cartilaginous

types of fibrous joints

sutures

gomphoses

syndesmoses

types of cartilaginous joints

symphyses

synchondroses

sutures

thin layer of dense fiber

gomphosis

peg in a hole

syndesmosis joint

ligament/cord/membrane

symphyses joint (cartilaginous)

Bones united by fibrocartilage

synchondrosis (cartilaginous joint)

hyaline cartilage between 2 ossifying centers

what do all diarthrodial joints have

cavity

synovial fluid

joint capsule

synovial membrane

articular cartilage

hinge joint

Joint between bones (as at the elbow or knee) that permits motion in only one plane

condyloid

convex on concave

two planes of motion

ball and socket joint

concave and convex

three planes of motion

pivot joint

allows spinning around one axis

plane joint

allows only gliding movement.

three planes of motion

saddle joint

biplanar

surfaces are both concave and convex

arthrokinematics

movement of joint surfaces

three types of arthrokinematic movements are

roll

spin

slide

types of joint surfaces

ovoid and sellar

ovoid joints

one segment is convex and the other is concave

seller joint

both sides are convex and concave

what is the convex and concave rule

convex on concave rolls and slides in opposite directions

concave on convex rolls and slides same way

Close-packed position

ligament and joint capsule are maximally taut (think elbow extension)

curvilinear motion

motion along a curved line

moment arm

The perpendicular distance from the axis of rotation to the line of action of the force.