Open MRI Assessment of Femoroacetabular Clearance in Active and Passive Impingement Provoking Postures

Description

In this presentation, Maryam Mohtajeb discusses the connection between cam and pincer morphologies at the femoral head-hip neck junction and acetabular over-coverage as potential precursors to hip osteoarthritis and non-arthritic hip pain. She emphasizes the need for a deeper understanding of the pathomechanisms leading to symptoms in selected hips with these deformities. To explore the hypothesis of anterior impingement as a key mechanism, 33 participants were recruited from a hip pain cohort, categorized into different groups based on their morphologies and symptoms. Utilizing an upright, open MRI scanner, participants underwent scans in specific postures thought to provoke impingement. Key findings indicated that symptomatic femoroacetabular impingement (FAI) presented significantly reduced beta angles during squatting compared to both asymptomatic and control groups, while sitting FADIR also showed reduced angles in both asymptomatic and symptomatic groups. The results lead to the conclusion that anterior impingement patterns are observable in FAI hips, with implications for understanding symptoms in these patients.

DOI: 10.1302/3114-210294

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