Low Level Laser Therapy Versus Short Wave Diathermy in Patients With Anterior Cruciate Ligament Tear

Low-Level Laser Therapy (LLLT) will be administered using an 830 nm wavelength and 150 mW power output with 5 W/cm² power density. The laser probe will be applied 2-3 times per week for 6 weeks over the affected knee. Treatment is performed using a direct skin contact method with 3-4 minutes of exposure per point around the knee joint. The goal is to reduce inflammation, enhance collagen synthesis, and support ligament healing in patients with partial anterior cruciate ligament (ACL) tears. This intervention is provided in addition to standard physiotherapy and shortwave diathermy.

Participants in this group will receive standard physiotherapy exercises combined with shortwave diathermy (SWD), without the application of Low-Level Laser Therapy (LLLT). The exercise protocol includes heel slides, supported partial knee bends, quadriceps sets, and step-ups, performed in 2 sets of 10 repetitions with 3-5 second rest intervals. SWD will be delivered 2-3 times, using a 27.12 MHz frequency for 20-30 minutes per session, targeting pain relief and enhanced soft tissue healing. This group functions as an active comparator to assess the additional therapeutic value of LLLT used in the intervention group.