The document discusses various lumbar pathologies including spinal stenosis, spondylosis, and spondylolisthesis. Spinal stenosis narrows the spinal canal and causes leg pain that is relieved by rest and bending forward. Spondylosis is age-related degeneration of the lower back that causes muscle spasms and pain. Spondylolisthesis is vertebral slippage that can be caused by injury or disease. Physiotherapy treatments focus on exercises and manual therapy to relieve pain and improve function.