Heterotopic ossification after hip fracture, hemiarthroplasty seen in 44% of patients
BARCELONA, Spain — In one of the few known investigations on the presence of heterotopic ossification in conjunction with hemiarthroplasty after hip fracture, researchers at a level 1 trauma in Austria found this condition indeed occurred in some patients they studied. However, the investigators were unable to find a statistically significant association between the surgical approach and the occurrence of this disease, according to a presenter at the EFORT Annual Congress.
Gloria Hohenberger , MD , of Medical University of Graz in Austria and who presented the findings, said the two hip hemiarthroplasty surgical approaches treating surgeons used, which she and her colleagues analyzed, were the conventional lateral or anterolateral approach (CA) and the anterior minimally invasive approach (AMIS). The 54 patients evaluated had a mean age of 83 years. The CA was used in 52% of them, whereas AMIS was used in 48% of them.
“We found no significant differences concerning the occurrence of heterotopic ossifications between the minimal surgical approach and the anterolateral approach at our center,” Hohenberger said.
Two surgeons assessed the hips and pelvises of all patients in the study sample for the presence of heterotopic ossification (HO) based on the Brooker scale via radiographs taken at 7 days, 2 weeks, 6 weeks, 12 weeks, 6 months and 1 year after their hip hemiarthroplasty procedure. Cement augmentation was used in 37 patients (69%), which was decided upon “in concordance with the patients’ comorbidities,” Hohenberger said.
HO was present in 44% of patients, and in 50% of the CA group and in 42% of the AMIS group.
“The occurrence of heterotopic ossifications was 1.6-times higher in the sample with the anterolateral approach when compared to the AMIS sample,” she said.
This difference, however, was not statistically significant. Furthermore, the mean Brooker scale for both groups was also not statistically significantly different, according to Hohenberger. – by Susan M. Rapp
Hohenberger G, et al. Paper 2696. Presented at: EFORT Annual Congress; May 30-June 1, 2018; Barcelona, Spain.
Disclosure: Hohenberger reports no relevant financial disclosures.