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Ch4 Arthrokinematics

Clinical Kinesiology Chapter 4

JOINT SURFACE MOTION; in other words, the manner in which adjoining joint surfaces move on each other during osteokinematic joint movement: arthrokinematics
JOINT MOTION; how bones move in space: osteokinematics
Axial movements done under voluntary control: Voluntary osteokinematic motion (also known as classic or physiologic)
Resistance at the end range of a voluntary motion is called _______ ________. end feel
Linear movements WITHIN THE JOINT & surrounding tissues that are necessary for normal ROM, but can not be voluntarily performed: Accessory motion
Motions that accompany active motion, but are not under voluntary control: component motion (a type of accessory motion)
Passive movements between joint surfaces done by passively applying EXTERNAL FORCE (not under voluntary control): joint play (a type of accessory motion)
The type of accessory motion occurring at the joint depends on the ________ of the articulating surfaces. shape
Pertaining to shape, ALL joint surfaces are either _________ or ________. ovoid or sellar
Pertaining to shape, most synovial joints are ________. ovoid
An oviod joint has two bones forming a ________-_________ relationship. convex-concave ie)metacarpophalangeal joints
In a _________ shaped joint, each joint surface is concave in one direction and convex in another sellar (or 'saddle-shaped')ie) the MCP joint of the thumb
Name the types of accessory (arthrokinematic) motion: Roll, Glide, and Spin (or combo of all three)
The type of arthrokinematic motion in which new points on one surface meet new points on the opposing surface throughout the motion; always in the same direction as the moving bone: Roll ie) shoe on floor during walking
This type of arthrokinematic motion results in compression on one side of the joint and separation on the other; surfaces are incongruent: Roll
The type of arthrokinematic motion that is a linear movement of a joint surface parallel to the plane of the adjoining joint surface: Glide (or Slide)
The type of arthrokinematic motion in which the same point on one surface comes into contact with new points on the opposing surface; the surfaces are congruent. Glide (or slide)
The direction of gilding (sliding) depends on whether the moving surface is __________ or __________. concave or convex
The type of arthrokinematic motion is the rotation of a movable joint surface on a FIXED adjacent surface, often occurs in combination: spin
During this type of arthrokinematic motion, the same point on each surface remains in contact with each other: spin
Describe the convex-concave rule: - The concave joint SURFACE moves in the same direction as the body segment's motion. - The convex joint SURFACE moves in the opposite direction of the body segment's movement.
Name the 4 types of Accessory Motion forces: traction, compression, shearing, rotary
________ may also be called distraction or tension or tensile. This is the joint motion that occurs when outside force pulls joint surfaces away from each other. Traction
Also called approximation; joint movement that occurs when external force pushes joint surfaces closer together: Compression
This accessory motion force causes bone ends to move parallel to and in opposite direction from each other: Shear
The twisting motion that is a combination of compression and shear: Rotary
Created by: taranorwood