Troublesome heterotopic ossification. Does the etiology have an impact on joint location and surgical complications

Introduction/Background Heterotopic ossification (HO) is a frequent complication after damage to the central nervous system (CNS), with an estimated prevalence of up to 76%. The primary site of HO is the hip joint (60,9%). The only effective treatment of troublesome HO is surgery. The main purpose of this study was to identify the relationship between the location of troublesome hip HO treated by surgery and the etiology of the cerebral damage. The secondary aim was to identify risk factor of sepsis and recurrences after the surgery. Material and method We retrospectively analyzed data from an anonymous prospective survey of patients undergoing surgery for troublesome HO from 1993 to 2016 (417 patients, 609 surgeries). Results The sites of HO on the hip joint were associated with its etiology ( P Conclusion The sites of hip HO, their recurrences and sepsis were associated with its etiology. The patients with SCI will develop most frequently anterior hip HO, with a risk of sepsis that is more frequent than in the other etiologies.