... Moves around x-axis. Ex) Flex and ext the knee 3) Transverse or horizontal-separate tope from bottom. Moves around y-axis. Ex) rotation of head, trunk, hand DEGREES OF FREEDOM-number of elements in system that are free to vary. 1) Uniaxial joint-1 plain of motion ex)elbow has 1 DF, sagital motion over x-axis 2) Biaxial joint-2 plains of motion or 2 DF. Ex)wrist has sagital and coronal plain of motion. Ex) MCP joint-sagital and coronal. 3) Triaxial joint-glenohumeral and hip joint has 3 DF or 3 or multiaxial axis or rotation, 3 plains of motion. OPEN KINEMATIC CHAIN-distal moves on proximal, while proximal is stable. Ex) Hand movement CLOSED KINEMATIC CHAIN-proximal moves on distal, while distal is stable. Ex) dorsiflexion of ankle, when stand while trying to sit down tibia and fibula moves while distal bones are stable. Ex)push up, pull against the wall, help get up from chair. ARTHROKINEMATICS 3 ANATOMIC CLASSES OF JOINTS Synarthrosis-have no movement ex) sutures in the ...

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