Simplified Biplanar Classification for Heterotopic Ossification Is More Predictive of Patient-Reported Outcomes Than the Brooker Classification After Anterior Total Hip Arthroplasty
Authors
Onsen LT, Ouyang VW, Jimenez AE, Monahan PF, Lall AC, Domb BG
DOI: 10.1177/11207000211039173
Background
Heterotopic ossification (HO) is the abnormal growth of bone after hip surgery, such as total hip arthroplasty (THA). The study compares the effectiveness of two classification systems for assessing HO in predicting patient outcomes.
Methods
The study reviewed 513 THA patients, evaluating HO using both the Brooker classification and a simplified biplanar classification system. Patient-reported outcomes (PROs) were analyzed two years after surgery.
Key Findings
The biplanar classification was found to be more reliable and predictive of post-surgery outcomes than the Brooker classification. Grade 2 HO in the biplanar system was associated with worse outcomes in terms of pain and function.
Conclusions
The simplified biplanar classification provides a better prediction of patient outcomes after THA than the Brooker classification, especially for non-bridging HO.
What Does This Mean for Patients
If you are undergoing or have had THA, understanding how HO is classified using the biplanar system can help doctors predict your recovery and whether you might experience more pain or functional limitations post-surgery.