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3 Anatomical curves of the Spine
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Where is the COG (Center of Gravity) located?
Anterior to the 2nd sacral vertebra (s2)
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Torque
- The effectiveness of a force in a lever system; T=F X D
- -Greater force applied over greater distance = greater torque
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Base of Support (BOS)
The area on which an object rests and that provides support for that object
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Vertical line of gravity
- an imaginary vertical line that passes through the center of gravity of an object
- Humans: S2-->Feet
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Principles of Body mechanics when handling patients or equipment
- -Lower the torque necessary to complete
- the task by moving closer to an object
- -Further reduce the torque necessary by
- moving your COG close to the object's
- COG
- -Increasing your stabilty
- -Use large muscle groups and joints whenever possible (gluts, hamstrings, quads)
- -Allow motor planning to occur by
- preparing and planning for challenging
- lifting activities
- -Pushing prefferred to pulling &
- horizontal movements of vertical
- movements
- -Use forces to your advantage (ex.
- momentum)
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How to increase your BOS
- -Increasing BOS (widening Feet)
- -Maintaing your VLG w/in your BOS
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VLG
Vertical Line of Gravity
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3 Lifting Models
- -Traditional
- -Lumbar Lordosis
- -One Leg Stance
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Tradition Lifting Model
Use posterior pelvic tilt to reduce lordotic posture prior to initiating lift
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Lumbar Lordosis Models
Maintain the spines normal lordotic posture during lifts
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3 Examples of Lumbar Lordosis Models
- -Deep Squat: uses full squat with
- vertical trunk
- -Power Lift: uses partial squat witha
- more horizontal trunk
- -Straight leg lift: uses straight parallel
- lower extremeties
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Deep Squat (lordosis model)
Uses full squat w/ vertical trunk
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Power Lift (lordosis model)
Uses partial squat w/ a more horizontal trunk
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Straight Leg Lift (lordosis model)
Uses straight parallel lower extremities
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One Leg Stance
Used for light objects
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Pushing, pulling, ect.
- -Use parallel force
- -Plan for inertia
- -Use equipment, if necessary, to engage
- good body mechanics
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TRUNK MOVEMENT TO AVOID
Trunk flexion w/ rotation (don't flex at the waist and twist at the same time)
BEND AT THE HIPS, NOT THE WAIST
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Independent
Patient is consistently able to perform skill safely with no one present
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Surpervision
Patient requires some one w/in arms reach as a recaution; low probability of patient requiring assistance
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Minimum Assist (Min PA)
Patient is able to complete majority of the activity w/o physical assistance. patient completes at least 75% of activity (25% caregiver)
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Moderate Assist (Mod PA)
Patient is able to complete part of the activity w/o assistance 50% patient, 50% caregiver
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Maximum Assist (Mas PA)
Patient is unable to participate in teh activity; able to complete less than 25% of activity
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Close Guarding--Generally used for Walking
Person assisting is positioned as if to assist but not touching the patient; full attention on the patient with fair prabability of patient needing assistance
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Contact Guarding
Person assisting is positioned w/ hands on patient but not providing any specific physical assistance; high probability of patient requiring assistance
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Cues
Patient requires visual/ verbal cues to complete task
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Transfer
Safe movement of a person from one surface or location to another
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Mobility Activites refer to...
respositioning of a recumbent patient or to activities that precede a surface or location change
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Goals of transfer and mobility activities
- -move patient for purposeful activity
- -move patient to maintain joint & skin
- integrity
- -provide training and experience in
- functional rehabilitation activities
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Supine
Laying on dorsal surface (back)
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Prone
Laying on ventral surface (belly/stomach)
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Mobility activities
- -adjust patient's position
- -1st steps in restoring mobility
- -Patient should mentally & physically
- participate in these activites even
- when assistance is required
- -Use your knowledge of Body
- Mechanics when performing these
- activities
- -Can be used as part of a
- strengthening & rehab program
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Transfers (Dependant/Assisted)
- -Prepare the patient, the environment &
- yourself
- -Know your limits and get help when
- needed
- -Know your patient both physically and
- mentally
- -Organize your environment
- (start-->finish)
- -Explain all expectations to your
- patient. Be clear as to what your
- expectations of him/her are (lower
- cognition recieves simple instruction
- even w/ low expectation)
- -Confirm patients understanding (ask if
- they understand, ask them questions
- about the instruction & have them
- repeat it back to you)
- -Give clear instructions to anyone
- assisting w/ transfers
- -Assemble any necessary equipment
- -USE A SAFETY BELT WHENEVER YOU ARE MOVING A PATIENT FROM ONE SURFACE TO ANOTHER
- -Incorporate patient teaching whenever possible
- -Precautions:
- --Shoes
- --Belt
- --Monitor special medical equipment
- --Do not leave patients unattended
- at the end of transfer until safety
- is certain
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Weight Bearing Restriction
Physian based decision for patient recovering from surgery or procedure. Doctor decides how much weight can be placed on lower extremity.
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Hookline
Position-- laying supine, both knees bent, feet flat on the surface o_./\_
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Long Sitting
Knees extended
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Sitting Supported
Holding on to something or sitting w/ back against supporting surface (ex. back of chair)
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Sitting Unsupported
Hands on lap, not leaning on anything
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2 Types of Patient Positioning
Short Term & Long Term
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Short Term Positioning
- 1) Comfort
- 2) Visual & physical access to body part
- being treated
--20 to 30 minutes for treatment
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Long Term Positioning
- Used when patient is unable/unwilling to move themselves. They are dependant of someone else to move them
- -bed/chair bound
- -diminished sensation
- -diminished cognition/communication
- skills
- -Obese
- -Medically complex
- -recent surgery, fracture or acute
- illness
- -recent skin graft, burns or other skin
- related problems
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Aim of Long Term Positioning (3)
- 1) Prevent skin breakdown
- 2) Prevent Contractures
- 3) Maximize potential for return to
- functional mobility
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Draping
- Dressing of the Patients
- -Provides modesty and dignity to
- patients who are in treatment or at rest
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4 rules of Draping
- 1) Expose body part as needed for
- treatment
- 2) Maintain neat drape around the rest
- of the body
- 3) Provide clear instructions reguarding
- removal of clothing
- 4) Supply gowns w/ instructions as
- appropriate
- --only expose what is necessary. Have
- utmost respect for the privacy of the
- patients--
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