Therapeutic ultrasound at **1 MHz** is commonly used in physiotherapy for deep tissue healing. Here’s a quick breakdown:

### **Indications** (When it’s beneficial)
– **Pain relief**: Helps reduce chronic and acute pain.
– **Muscle relaxation**: Eases muscle spasms and stiffness.
– **Tissue healing**: Enhances recovery from injuries like sprains and strains.
– **Joint conditions**: Useful for osteoarthritis and rheumatoid arthritis.
– **Scar tissue breakdown**: Helps soften and remodel scar tissue.
– **Improved blood circulation**: Enhances local blood flow for healing.

### **Contraindications** (When it should be avoided)
– **Pregnancy**: Avoid use over the abdomen or lower back.
– **Cancerous tissues**: Should not be applied over tumors.
– **Infections**: Can worsen bacterial infections.
– **Metal implants**: Avoid direct application over metal prosthetics.
– **Pacemakers**: Can interfere with electronic implants.
– **Fractures**: Not recommended for fresh fractures.