What is Deep Tissue Class 4 Laser Therapy? Class 4 lasers are deep penetrating High Energy lasers, treatments are quick, usually 3-10 minutes depending on the size, depth, and acuteness of the condition being treated. High-power lasers are able to deliver a lot of energy in a small amount of time, so therapeutic dosages are achieved quickly. For people with packed schedules, patients and clinicians alike, fast and effective treatments are a must. and can cure all major musculoskeletal pains, including, slip disc, sciatica, disc pain, nerve pain, disc rupture, spinal canal stenosis, disc herniation, disc protrusion, knee pain, osteoarthritis, arthritis, frozen shoulder, muscle injuries, sports injuries, ligament injuries, ACL rupture, PCL rupture, meniscal tear, etc, Dr Paiwal's Physiotherapy Clinic provides treatment via world class 4th generation, Leora Laser Therapy Unit. better penetration, better healing of your painful tissue, better and faster recovery. If you can explain your pain, we can heal it from inside out totally.