What is Ossification

Ossification of the posterior longitudinal ligament (OPLL) is most common in men, the elderly and found Asian patients. There are a lot of diseases. With OPLL as Crohn Forestier, ankylosing spondylitis and other spondyloarthritis Several factors have been reported with the development and progression OPLL, including genetic, hormonal, are affected by environmental factors and lifestyle. However, the pathogenesis of OPLL is still uncertain. Most symptomatic patients with OPLL present with neurological deficits such as myelopathy, radiculopathy and / or bowel and bladder symptoms. There are some reports of asymptomatic OPLL. Factors both static and dynamic linked to the development of myelopathy. X-ray, CT and MRI used enlargement of OPLL and evaluate the field of compression of the spinal cord. OPLL management remains controversial. Each surgical technique has advantages and disadvantages, and the choice of operation should be achieved from case to case, depending on the patient's condition, the degree of the disease, the nature of the OPLL and experience of the surgeon. In this article, the authors, the frequency, pathology, pathogenesis, natural history, clinical presentation, classification, radiological assessment and management of OPLL try to check.