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by Nandgaonkar's Therapy Services
Reduce pressure by increasing the area of force application.
Control parallel force system by increasing the mechanical advantage.
Use optimum rotational force when mobilizing a joint by dynamic traction.
Consider the torque effect on a joint.
Consider the relative degree of passive mobility of successive joints within the longitudinal segmental kinetic chain.
Consider the effects of reciprocal parallel forces when designing splints and placing straps.
Increase material strength by providing contour.
Avoid high shear stress.
Principles of using dynamic assist for mobilization
Identify optimum force parameters.
Identify optimum torque parameters.
Correlate physical properties of the dynamic assist with patient requirements.
Correlate physical properties of the dynamic assist with the design of the splint.
Consider the principles of mechanics and fit.
Control and maintain force magnitude.
General principles of design
Consider individual patient factors.
Consider the length of time the splint is to be used.
Strive for simplicity and pleasing appearance.
Allow for optimum function of the extremity.
Allow for optimum sensation.
Allow for efficient construction and fit.
Provide for ease of application & removal.
Consider the splint/exercise regimen.
Identify key joints.
Review the purpose: to immobilize, to increase passive motion, to substitute for active motion.
Determine if the wrist should be incorporated.
Consider kinetic effects.
Identify the areas of diminished sensibility.
Decide whether to use static or dynamic forces.
Determine the surface for splint application.
Use mechanical principles advantageously.
Adapt for anatomic variables.
Choose the most appropriate material.
Adapt to the general properties of the material.
Starve for good cosmetic effect.
Use equipment appropriate for the material.
Use type of heat & temperature appropriate to the material.
Use safety precautions.
Analyze the mechanical principles.
Stabilize joined surfaces.
Provide ventilation as necessary.
Use principles of mechanics.
Use optimum rotational force.
Use optimum leverage.
Accommodate bony prominences.
Incorporate dual obliquity concepts.
Consider ligamentous stress.
Align splint axis with anatomic axis.
Use skin crease as boundaries.
Allow for kinematic changes.
Employ kinetic concepts.
Develop patient rapport.
Change method according to properties of materials used.