Natural Course of Early Radiological Signs of Femoroacetabular Impingement in An Asymptomatic Population by Edoardo Monaco in Journal of Physical Fitness, Medicine & Treatment in Sports (JPFMTS) - Juniper Publishers
Background: During last years a lot of studies are investigating about femoroacetabular impingement (FAI) in athletes and its treatment. Few is known about the natural course of asymptomatic patients that present radiological FAI signs.
Purpose: The purpose of this study is to evaluate the radiological and clinical outcome of early-detected radiological signs predisposing towards FAI.
Study design: this is a cross sectional study.
Methods: All 2360 Computerized Tomography (CT) scans executed in our Emergency Department in 2006 were examined. Inclusion criteria were: age (20-40 years old), inclusion of both hips in the imaged range, absence of previous hip pathologies or trauma. The following bone abnormalities predisposing towards FAI were investigated: center edge angle, acetabular version angle, crossover sign. 44 patients (88 hips) were included in this study. At the 10-year follow-up, 42 patients were clinically evaluated using Hip Outcome Score. 19 patients also had repeated radiological examination.
Results: 34 out of 88 hips presented at least one radiological sign predisposing towards FAI. At follow-up, no patients developed symptoms. None of these 34 hips were found to have an increased number of signs at follow-up.
Conclusion: The role of early-detected radiological factors predisposing towards FAI remains unclear in asymptomatic patients and in the development time of FAI as a distinct clinical entity. The presence of radiographic signs of FAI is not predictive for the development of osteoarthritis at medium-long term.
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