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ArticleEuropean journal of orthopaedic surgery & traumatology : orthopedie traumatologie2025

Preliminary observations on the coincidence of femoroacetabular impingement and/or acetabular retroversion with anterior ankle impingement.

Mohammad Reza Bahaeddini, Hamid Mirzamohammadi, Amir Aminian, Pouria Tabrizian, Elham Mohammadyahya, Shayan Amiri, Azadeh Amini Kadijani, Hamed Tayyebi, Kaveh Gharanizadeh

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Article in European journal of orthopaedic surgery & traumatology : orthopedie traumatologie, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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9 authors.

Mohammad Reza BahaeddiniIran University of Medical Sciences, Tehran, Islamic Republic of Iran.
Hamid MirzamohammadiIran University of Medical Sciences, Tehran, Islamic Republic of Iran.
Amir AminianIran University of Medical Sciences, Tehran, Islamic Republic of Iran.
Pouria TabrizianIran University of Medical Sciences, Tehran, Islamic Republic of Iran.
Elham MohammadyahyaIran University of Medical Sciences, Tehran, Islamic Republic of Iran.
Shayan AmiriIran University of Medical Sciences, Tehran, Islamic Republic of Iran.
Azadeh Amini KadijaniIran University of Medical Sciences, Tehran, Islamic Republic of Iran.
Hamed TayyebiIran University of Medical Sciences, Tehran, Islamic Republic of Iran. Hamedtayebi65@gmail.com.
Kaveh GharanizadehIran University of Medical Sciences, Tehran, Islamic Republic of Iran.

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6 · The paper itself

Abstract

backgroundThe coincidence rate of femoroacetabular impingement (FAI) or acetabular retroversion (AR) with anterior ankle impingement (AAI) is not known. In this preliminary study, we investigated the coexistence of FAI and AR in a cohort of patients presented with AAI.

methodsIn a cross-sectional study, 56 patients who presented with AAI and underwent arthroscopic surgery for AAI treatment were included. The concurrent FAI was assessed clinically and radiographically. The concurrent acetabular retroversion was investigated by the evaluation of the crossover sign and ischial spine sign.

resultsConcurrent FAI was observed in 43% (24 of 56 patients), which was bilateral in 67% (16 of 24 patients) and unilateral in 33% (8 of 24 patients). Out of 24 patients with concurrent hip impingement, only six (25%) patients had symptomatic hips. In total, concurrent FAI was observed in 40 hips, which was cam-type in 55% (22 of 40 hips), pincer-type in 30% (12 of 40 hips), and mixed-type in 15% (6 of 40 hips). Concurrent AR was detected in 52% (29 of 56 patients), which was unilateral in 28% (8 of 29 patients) and bilateral in 72% (21 of 29 patients). In 25% of patients (14 of 56 patients), AR coexisted with FAI.

conclusionA considerable number of patients presenting with AAI were found to have concurrent FAI and/or AR. While the clinical significance of this association remains uncertain, these findings may warrant further investigation into whether evaluating for hip deformities in AAI patients could be of diagnostic or preventive value. LEVEL OF EVIDENCE: IV.

Indexed as

AcetabulumAnkle JointBone RetroversionFemoracetabular ImpingementAdultArthroscopyCross-Sectional StudiesFemaleHumansMaleMiddle AgedRadiographyYoung AdultAnterior ankle impingementCam-typeCoincidenceFemoroacetabular impingement

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