Femoroacetabular impingement: biomechanical and dynamic considerations

Femoroacetabular impingement: biomechanical and dynamic considerations

Authors

  • C. Dall'Oca Department of Orthopaedic Surgery and Traumatology of the University Hospital of Verona, G.B. Rossi Polyclinic of Verona
  • T. Maluta Department of Orthopaedic Surgery and Traumatology of the University Hospital of Verona, G.B. Rossi Polyclinic of Verona
  • G. M. Micheloni Department of Orthopaedic Surgery and Traumatology of the University Hospital of Verona, G.B. Rossi Polyclinic of Verona
  • T. Romeo Department of Orthopaedic Surgery and Traumatology of the University Hospital of Verona, G.B. Rossi Polyclinic of Verona
  • A. Zambito Department of Orthopaedic Surgery and Traumatology of the University Hospital of Verona, G.B. Rossi Polyclinic of Verona
  • R. Malagò Institute of Radiology, Integrated University Hospital of Verona, G.B. Rossi Polyclinic, Verona
  • B. Magnam Department of Orthopaedic Surgery and Traumatology of the University Hospital of Verona, G.B. Rossi Polyclinic of Verona

Keywords:

femoroacetabular impingement (F.A.I.), CAM, PINCER, CT scan, hip arthroscopy, femoroacetabular ante-retroversion

Abstract

Femoroacetabular impingement (F.A.I.) is a pathologic process caused by an abnormal shape of the acetabulum, of the femoral head, or both. F.A.I., often referred to as idiopathic, may be secondary to slipped capital femoral epiphysis, congenital hypoplasia of the femur, Legg-Calvé Perthes disease, post-traumatic mal-union and protrusio acetabuli. From 2009 to 2012 we studied 21 patients (14 males), with a mean age of 52 (33 y - 75 y), affected by idiopathic F.A.I. Every patient underwent pelvic and hip joint X-rays and CT scan with 3D reconstructions, in order to evaluate the morphology of the pelvis and the hip joint and the torsion of the lower limbs (Femoroacetabular ante-retroversion). Our results show an average femoral ante-version angle of 12,4° (15°-20° physiological range) in patients affected by CAM impingement and an average acetabular ante-version angle of 13,5° (15°-20° physiological range) for those with PINCER impingement. These values, in patients affected by F.A.I., are probably related to morphologic and biomechanical features that may lead to the onset of idiopathic femoroacetabular impingement. In the literature, other studies partially support our findings, suggesting a more critical approach to a patient with idiopathic F.A.I. extending evaluations to nearby articulations.

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Published

24-09-2014

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Section

ORIGINAL ARTICLES

How to Cite

1.
Femoroacetabular impingement: biomechanical and dynamic considerations. Acta Biomed [Internet]. 2014 Sep. 24 [cited 2024 Apr. 25];85(2):46-51. Available from: https://www.mattioli1885journals.com/index.php/actabiomedica/article/view/3892