The McKenzie method (or mechanical diagnosis and therapy, MDT) is a system of diagnosis and treatment for spinal and extremity musculoskeletal disorders. The McKenzie method was introduced in 1981 by Robin McKenzie (1931–2013), a physical therapist from New Zealand . A feature of the method is emphasizing patient empowerment and self-treatment.

The McKenzie Method of Mechanical Diagnosis and Therapy, often called the McKenzie Method or McKenzie exercises, is a specialized assessment and treatment protocol that your physical therapist (PT) might recommend for you. The McKenzie method includes several exercises for helping diagnose and manage low back pain or sciatica. 1