This study compares three common treatments for frozen shoulder when added to a standard exercise program: High-Intensity Laser Therapy (HILT), a corticosteroid (steroid) injection into the shoulder joint, and hands-on manual therapy by a physical therapist. A fourth group will receive only the standard exercise program. The goal is to see which combination works best to reduce shoulder pain and improve shoulder function over 6 months. The main outcomes are changes in pain (VAS scale) and shoulder disability (SPADI questionnaire) at 12 weeks.