This lesson covers function strength testing for the lumbar spine, including flexion, rotation, extension, and lateral flexion. Also covered are reflex testing for L3 and 4, tibias strength for L4, Big toe extensor strength for L5, everter strength for S1, the slump test, upper and lower abdominal strength testing, straight leg raise, mobility testing for extension and rotation, thoracic spring testing, Si joint spring testing, femoral nerve test and how to test for vertebral positioning.