Diffuse Idiopathic Skeletal Hyperostosis: Epidemiology and Clinical Management

Diffuse idiopathic skeletal hyperostosis (DISH) is a non-inflammatory enthesopathy characterised by progressive ossification of spinal ligaments and the formation of flowing anterior osteophytes. It predominantly affects individuals over 50 years of age, with a higher prevalence in men, and has been linked to metabolic disorders such as obesity, type 2 diabetes and hypertension. Radiographically, diagnosis requires the presence of contiguous ossifications spanning at least four vertebral levels without significant disc space narrowing or sacroiliac changes typical of inflammatory spondyloarthropathies. Clinically, many individuals remain asymptomatic, but some experience axial stiffness, reduced spinal mobility, and pain. Complications include an elevated risk of unstable spinal fractures even after low-energy trauma, spinal canal narrowing with cord impingement, dysphagia and, in rare cases, airway obstruction. Management is multidisciplinary: conservative measures focus on analgesia, physical rehabilitation and optimisation of metabolic risk factors; surgical intervention is reserved for neurological compromise, decompression of haematoma or resection of osteophytes causing dysphagia; and fracture management often involves stabilisation and decompression to prevent delayed neurological deterioration.

Research from Nature Portfolio

Recent genetic analyses using large-scale imaging cohorts have revealed a substantial prevalence of DISH above the age of 45, with multiple osteophytes identified in approximately one in five men and one in twelve women. These studies demonstrate strong phenotypic and genetic correlations with increased bone mineral density throughout the skeleton and implicate several loci governing osteogenic pathways, suggesting that overactive bone formation drives the disease process. In parallel, advanced computed tomography studies have delineated key radiological features distinguishing DISH from ankylosing spondylitis: patients with DISH more commonly exhibit anterior and posterior bony bridging around the sacroiliac joint of the “candle-wax” type, whereas smooth-type bridging and complete sacroiliac fusion predominate in inflammatory disease. Detailed assessment of ligamentous bridging patterns and facet joint fusion enhances diagnostic accuracy and informs appropriate management strategies.

Diffuse Idiopathic Skeletal Hyperostosis: Epidemiology and Clinical Management publication trend

The graph below shows the total number of articles in diffuse idiopathic skeletal hyperostosis: epidemiology and clinical management across all publications each year (not limited to Nature Index journals).

Technical terms

Osteophyte: Bony outgrowth that forms along the margins of joints or ligaments.

Enthesis: Site where a tendon, ligament or joint capsule attaches to bone.

Ankylosis: Pathological fusion of adjacent bones across a joint, leading to stiffness.

Epidural haematoma: Accumulation of blood in the space between the dura mater and the inner surface of vertebral canal.

References

1. Genetics implicates overactive osteogenesis in the development of diffuse idiopathic skeletal hyperostosis. Nature Communications (2023).
2. Comparison of radiological characteristics between diffuse idiopathic skeletal hyperostosis and ankylosing spondylitis: a multicenter study. Scientific Reports (2023).
3. Post-traumatic spinal hematoma in diffuse idiopathic skeletal hyperostosis (DISH). European Radiology (2023).
4. Diffuse idiopathic skeletal hyperostosis of the cervical spine causing dysphagia and airway obstruction: an updated systematic review. The Spine Journal (2022).
5. Diffuse idiopathic skeletal hyperostosis: Etiology and clinical relevance. Best Practice & Research Clinical Rheumatology (2020).