13. Modalities Temperature Change Penetration Depth Heat pack 2-5 Degrees 1-2 cm (Max) Paraffin Wax 2-5 Degrees 1-2cm (Max) Infra-red 5-6 Degree 1-2mm 3mm on sole and palm SWD Condensor- 5 Degrees Inductor- 7-8 Degrees Depend on arrangement MWD 5-7 Degrees 3 cm Ultrasound 8 Degrees 3MHZ- 16mm 1MHZ- 50mm
14. Possible modalities Ultrasound Short wave Diathermy Microwave Nature of modality Conversive heat modalities Penetration Depth Depth of 5cm or more 4cm is the greatest absolute heating of deep tissues More superficial than SW; 3-4cm Temperature change Up to 8 deg 5 (condensor) 7-8 (inductor) 5-7 deg Duration of Temperature Change about 30-45 minutes for alll Physiological effects Reduce pain & muscle spasm Reduce pain, muscle spasm, stiffness, oedema Reduce pain, muscle spasm, soften tissues, accelerate healing
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