One of the causes of death in rheumatoid patients is cord compression following atlanto-axial subluxation. Dislocations in the cervical spine are common with patients who have rheumatoid arthritis. Anterior subluxation occurs in up to 35%, followed by vertical subluxation in 22.2%, lateral subluxation in 20.6% and rarely posterior subluxation. A case report is presented to
Skeletal metastatic disease is usually a disastrous cause of musculoskeletal pain. Although much has been learned concerning metastatic disease, patients presenting with skeletal pain or neuropathy and a history of carcinoma should be regarded with great suspicion. An overview, and study of one such case is discussed. (JCCA 1988; 32(3):127-132) Key Words: metastatic disease, back
Assimilation of the atlas is an osseous abnormality which occurs at the base of the skull in the region of the foramen magnum. It is demonstrated by the union of the atlas with the occipital bone. This may be a partial or complete union. Assimilation of the atlas is the most common anomaly found at
An anterior atlanto-dental interspace (ADI) of greater than 3mm in an adult indicates atlanto-axial subluxation (AAS) and instability. A number of pathological processes are known to cause AAS. Trauma, specifically injuries with a component of hyperflexion, may produce sprain or avulsion of the transverse atlantal ligament (TAL). More often, however, the odontoid process will fracture