Introduction[edit | edit source]'Arthrokinematics' refers to the movement of joint surfaces. Arthrokinematics differs from Osteokinematics - in general Osteokinematics means bone movement and Arthrokinematics joint movement. Show
The angular movement of bones in the human body occurs as a result of a combination of rolls, spins, and slides.
The video below gives a good 2 minute outline. [1] Types of Arthrokinematic Motion[edit | edit source]
Why Arthrokinematics Matters[edit | edit source]The convex-concave rule is the basis for determining the direction of the mobilizing force when joint mobilization gliding techniques are used to increase a certain joint motion. The direction in which sliding occurs depends on whether the moving surface is concave or convex.
If the moving joint surface is CONVEX, sliding is in the OPPOSITE direction of the angular movement of the bone. If the moving joint surface is CONCAVE, sliding is in the SAME direction as the angular movement of the bone. Examples:
Glenohumeral posterior glide increases flexion and internal rotation Glenohumeral anterior glide increases extension and external rotation
Dorsal or posterior glide of the head of radius increases elbow extension Volar or anterior glide of the head of the radius increases elbow flexion
Hip posterior glide increases flexion and internal rotation Hip anterior glide increases extension and external rotation
Tibiofemoral posterior glide increases flexion Tibiofemoral anterior glide increases extension
Talocrural dorsal or posterior glide increases dorsiflexion. Talocrural ventral or anterior glide increases plantarflexion. Resources[edit | edit source]Kisner, C. & Colby, L.A. (2002). Therapeutic Exercise: Foundations and Techniques, 5th ed. F.A. Davis: Philadelphia. References[edit | edit source]References will automatically be added here, see adding references tutorial.
What determines the amount of movement possible at each joint?The amount of movement in these types of joints is determined by the length of the connective tissue fibers.
Is the range of movement possible at a joint?Range of motion is the capability of a joint to go through its complete spectrum of movements. It can be passive or active. Passive range of motion can be defined as what is achieved when an outside force, such as a therapist, causes movement of a joint. It is usually the maximum range of motion.
Does flexibility change body shape?Flexibility is an important component of physical fitness and has many positive effects on the body. For instance, it improves mobility, posture, muscle coordination, reduces the risk of injuries and muscle soreness. It even leads to a better overall “shape”.
What do you call the ability of our joints in a full range of motion?Flexibility is the ability of a joint or series of joints to move through an unrestricted, pain free range of motion.
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