2ObjectivesRecognize principles of appropriate body mechanics, including safety, precautions, body alignment, and body mechanics.
3103.1 Body Mechanicsefficient use of body as a machine
4103.1 Body Mechanics Efficient use of body as a machine Purpose of good mechanicspromotes good musculoskeletal functionreduces required energypromotes balancepromotes safety of patient and healthcare worker
5Terms Alignment having parts in proper relationship to each other CervicalThoracicLumbarSacro-coccygeal
8Terms Gravity Center of gravity force that pulls object toward center of the earthCenter of gravityarea on which mass of object is centeredLine of Gravity vertical line that passes through center of gravity
9Terms Center of gravity and balance for an object/person to be in a stable position, the center of gravity must be above the base of support
10Posture position of body keep feet parallel, flat on the floor, shoulder width apartbend knees slightly to avoid strainact as shock absorbersGOODBAD
11Proper Posturepull buttocks in and hold abdomen in, helps keep straight backhold chest up and slightly forwardhold head erect with face forward and chin slightly inGOODBAD
12Body at Work use longest & strongest muscles (legs)to provide energy use internal girdle and make a long midriff to protect abdominal muscleskeep feet apart for a wide base of supportpush, pull or roll objects when possible
13Body at WorkBend at knees and hips, use leg muscles, and keep back straight when lifting
14Body at Work Avoid twisting and stretching muscles Rest between periods of exertion
15Concepts of Moving a Patient or Object Frictionforce that opposes motionForceenergy required to accomplish movementInertiatendency of an object at rest to stay at rest and an object in motion to remain in motionOuch!
16Concepts of Moving a Patient or Object Muscleproduce forces that move leversFulcruma fixed point about which a lever movesexample: elbow
17Concepts of Moving a Patient or Object Leverany one bone or associated joint that acts as simple machine so that force applied to one end tends to rotate the bone in opposite directionLever
18Principles of Body Mechanics USE MIND THEN YOUR MUSCLESmuscles act in groups to perform a functionlarge muscles fatigue less quicklymuscles are always slightly contractedstability is greater with a wide base of support, and low center of gravityadjust work area (beds) to waist level when possible
19Principles of Body Mechanics it is easier to push or pull than to liftfriction increases work, work on a smooth surfacechanges in activity or position decrease fatigueuse body weight and mechanical devices to decrease effort to include rocking or leaning forward or backwork close to object you are movingavoid twisting your body
20Principles of body mechanics If lifting a heavy object ask for help.Keep feet 12” apart when lifting.Rules of good body mechanics apply to moving objects and tranfering patients.
21Knowledge Assessment Define alignment and gravity. Discuss center of gravity.List considerations for a body at work.List concepts of moving a patient or an object.