Chronic leg and back stiffness in a young adult, especially with morning stiffness that improves with heat, suggests an underlying inflammatory or chronic mechanical musculoskeletal condition rather than an acute injury. Balance difficulty, stair problems, and occasional leg weakness may be related to muscle stiffness, altered gait mechanics, or core and hip muscle involvement. Even if imaging is normal, these symptoms can persist due to muscle tightness, postural strain, or early inflammatory spine involvement. A detailed clinical examination and correlation with imaging and blood tests are important to identify the cause.

Get done Blood Test - X-ray scan Dorsolumbar Spine AP/Lat View HLAb27, ANA, Anti CCP Antibody

Check some blood test Ra factor Esr Aso titre Vitamin d Anti ccp