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Three radiographic parameters showed differences between asymptomatic, symptomatic FAI patients
Use of anterior rim angle, anterior wall angle and anterior margin ratio yielded statistically significant differences between asymptomatic and symptomatic patients with pincer-type femoroacetabular impingement, according to results.
Researchers reviewed the anteroposterior pelvis radiographs of patients who had no hip complaints between December 2009 and December 2011, as well as the anteroposterior pelvis radiographs of patients who underwent a rim-trimming procedure for pincer femoroacetabular impingement (FAI) between December 2010 and December 2011. Both groups were matched for age, sex and BMI, and researchers collected and compared Tönnis angle, lateral center-edge angle of Wiberg, anterior rim angle, anterior wall angle and the anterior margin ratio.
Overall, 72 asymptomatic hips (61% female patients) and 72 symptomatic hips (56% female patients) were measured. Results showed a mean difference of 5.92° in the anterior rim angle between symptomatic and asymptomatic groups. Researchers also found a mean difference of 4.22° in the anterior wall angle and of 0.07 for the anterior margin ratio between the groups. – by Casey Tingle
Disclosures: Hellman reports no relevant financial disclosures. Please see the full study for a list of all other authors’ relevant financial disclosures.