Heterotopic bone formation in patients with DISH following total hip replacement.

Radiographs of 236 patients who underwent total hip replacement (THR) were evaluated for heterotopic bone formation. There was no significant difference in the presence and degree of ossification in patients with and without diffuse idiopathic skeletal hyperostosis (DISH). The authors conclude that DISH is not a significant risk factor in the development of heterotopic bone formation following THR.