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The Chebychev–Grübler–Kutzbach criterion determines the number of degrees of freedom of a kinematic chain, that is, a coupling of rigid bodies by means of mechanical constraints. [1] These devices are also called linkages .
The degrees of freedom, or mobility, of a kinematic chain is the number of parameters that define the configuration of the chain. [2] [5] A system of n rigid bodies moving in space has 6n degrees of freedom measured relative to a fixed frame. This frame is included in the count of bodies, so that mobility does not depend on link that forms the ...
Movement assessment means to estimate inability, means to examine something based on different factors. A good examination of joint movement, in addition to helping the physical therapist diagnose the patient's functional loss, can provide an objective criteria to determine the effectiveness of a treatment program.
The general mobility of a mechanism is the difference between the unconstrained freedom of the links and the number of constraints imposed by the joints. It is described by the Chebychev–Grübler–Kutzbach criterion .
The Timed Up and Go test (TUG) is a simple test used to assess a person's mobility and requires both static and dynamic balance. [1]It uses the time that a person takes to rise from a chair, walk three meters, turn around 180 degrees, walk back to the chair, and sit down while turning 180 degrees.
Hypermobility, also known as double-jointedness, describes joints that stretch farther than normal. [2] For example, some hypermobile people can bend their thumbs backwards to their wrists and bend their knee joints backwards, put their leg behind the head or perform other contortionist "tricks".
The Tinetti Test (TT), or Performance Oriented Mobility Assessment (POMA), is a common clinical test for assessing a person's static and dynamic balance abilities. [1] It is named after one of the inventors, Mary Tinetti .
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