- Discussion:
- also known as Forestier's disease;
- disease involves non-marginal syndesmophytes present at at three successful vertebral levels;
- commonly there will be no disc & joint narrowing & nor osteoarthritis;
- differentiated from AS, w/ marginal syndesmophytes;
- more common in elderly men;
- DISH is associated w/ low back pain and is more common in patients w/ diabetes and gout;
- prevelance of DISH may be as high as 28%;
- Associated Conditions:
- associatted with extrapsinal ossification in large joints;
- osteophytes are seen at extravertebral sites, esp margins of large joints;
- increased risk of hetertopic ossification following THR;
- Location of Syndesmophytes:
- can occur anywhere in the spine;
- most common in thoracic spine;
- more often seen on the right side;
- cervical spine involvement:
- frequently involved;
- characterized by thick, wavy ossification of anterior longitudinal ligament;
- relative preservation of the disk spaces;
- no vaccum phenomena or vertebral end plate sclerosis
Hyperextension Injuries of the Thoracic Spine in Diffuse Idiopathic Skeletal Hyperostosis. Report of Four Cases.