Diffuse vô căn xương hyperostosis (DISH) là một rối loạn phổ biến của nguyên nhân chưa biết được đặc trưng bởi đau lưng và cột sống cứng khớp. Có thể có đau nhẹ nếu ankylosis đã xảy ra. Điều kiện được công nhận radiographically bởi sự hiện diện của hóa xương "chảy" dọc theo lề anterolateral đốt sống liền kề nhau | Diffuse Idiopathic Skeletal Hyperostosis Musculoskeletal Manifestations Theodore A. Belanger MD and Dale E. Rowe MD Abstract Diffuse idiopathic skeletal hyperostosis DISH is a common disorder of unknown etiology that is characterized by back pain and spinal stiffness. There may be mild pain if ankylosis has occurred. The condition is recognized radiographically by the presence of flowing ossification along the anterolateral margins of at least four contiguous vertebrae and the absence of changes of spondyloarthropathy or degenerative spondylosis. Even in patients who present with either lumbar or cervical complaints radiographic findings are almost universally seen on the right side of the thoracic spine. Thus radiographic examination of this area is critical when attempting to establish a diagnosis of DISH. The potential sequelae of hyperostosis in the cervical and lumbar spine include lumbar stenosis dysphagia cervical myelopathy and dense spinal cord injury resulting from even minor trauma. There may be a delay in diagnosis of spinal fractures in a patient with DISH because the patient often has a baseline level of spinal pain and because the injury may be relatively trivial. The incidence of delayed neurologic injury due to such fractures is high as a result of unrecognized instability and subsequent deterioration. Extraspinal manifestations are also numerous and include an increased risk of heterotopic ossification after total hip arthroplasty. Prophylaxis to prevent heterotopic ossification may be indicated for these patients. J Am Acad Orthop Surg 2001 9 258-267 In 1950 Forestier and Rotes-Querol described a disorder characterized by spinal stiffness osteophytosis and flowing new-bone formation about the thoracic spine. They termed it senile ankylosing hyperostosis and distinguished it from ankylosing spondylitis. They documented clinical and radiographic findings in a series of 200 patients as well as descriptions of pathologic specimens. Over the years .
