Seijas R, Alvarez P, Ares O, Sallent A, Barastegui D, et al. (2018) Hip Alpha Angle in Asymptomatic Population. J Musculoskelet Disord Treat 4:058.


© 2018 Seijas R, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

ORIGINAL ARTICLE | OPEN ACCESS DOI: 10.23937/2572-3243.1510058

Hip Alpha Angle in Asymptomatic Population

Roberto Seijas1,2*, Pedro Alvarez1,2,3, Oscar Ares2,4,5, Andrea Sallent5,6, David Barastegui1,3 and Ramón Cugat1,3

1Orthopaedic Surgery, Artroscopia GC - Fundación García Cugat, Hospital Quirón Barcelona, Spain

2Universitat Internacional de Catalunya, Sant Cugat, Spain

3Mutualitat de Futbolistes de la Federación Española de Fútbol, Delegación Catalunya, Barcelona, Spain

4Orthopaedic Department, Hospital Clinic, Barcelona, Spain

5Hospital Teknon Barcelona, Spain

6Hospital Vall d'Hebron Barcelona, Spain



Hip osteoarthritis is related to the deformity caused by femoroacetabular impingement (FAI). This lesion is related too with an increased performance of sports activities, such as soccer. Alpha angle is a possible measurement of the deformity caused by FAI, especially Cam-type lesion. The purpose of the present study is to describe the alpha angle measured in AP and axial projections in a group of soccer players, being able to compare it with the general population and populations of adult soccer players.


Alpha angle was collected in a professional group of soccer players (mean age 12.7 years old) with a minimum sports practice of 5 years, to compare to the previously published, both in the general population and professional soccer players.


Alpha angles in a population of 20 soccer players show pathological values (> 55°) in 32.5% of the players. Pathological alpha angles described in general population are around 14%, whereas the adult soccer players are over 40%.


Alpha angle can be an objective value to detect at-risk players of developing FAI.