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- Talk
- 15/09/2021
- Canada
Correlation of Patient-Reported Outcomes after PAO with Femoral Head Coverage
Description
The presentation, delivered by Dr. Mazen Ibrahim, an Assistant Professor at the University of Ottawa, explores the findings of a study titled "Correlation of Patient Reported Outcomes after Periacetabular Osteotomy with Femoral Head Coverage-- A Single Center Cohort Study." Dr. Ibrahim begins by defining the historical context of acetabular dysplasia treatments, noting that focus has traditionally been on lateral coverage. The study aims to enhance understanding of acetabular dysplasia patterns in three dimensions to improve clinical outcomes following Periacetabular Osteotomy (PAO).
The research included 79 hips from 67 patients who underwent PAO for symptomatic acetabular dysplasia. The morphology of the hip joint was analyzed using a specialized platform called Hip2Norm, which facilitated the three-dimensional reconstruction of the joint. Findings classified 68% of hips as class G (global deficiency), 19% as class B (posterior deficiency), and 13% as class A (anterior deficiency). Dr. Ibrahim highlights significant improvements in functional outcomes for patients at an average follow-up of three years, with high response rates to various subscales of patient-reported outcomes.
The correlation analysis revealed that postoperative total femoral coverage, particularly posterior coverage, was linked to improved activity scores. In contrast, certain indices, like the extrusion index, were negatively associated with outcomes. A logistic regression model showed that specific measurements of femoral coverage and indices were predictive of achieving the minimum clinically important differences in patient-reported outcomes, emphasizing the importance of posterior coverage in clinical assessments of acetabular dysplasia correction.
Dr. Ibrahim concludes the presentation by stressing the critical need to optimize femoral head coverage while being cautious of undercoverage, particularly from a posterior perspective. The categorization of acetabular dysplasia based on Ottawa classification provides guidance for the required corrective actions, particularly in the context of anterior and posterior coverage that may otherwise be misdiagnosed as borderline dysplasia. He expresses gratitude for the opportunity to present and looks forward to further engagements in future forums.