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The Journal of Sports Medicine and Physical Fitness 2021 Apr 19

DOI: 10.23736/S0022-4707.21.12274-1

Copyright © 2021 EDIZIONI MINERVA MEDICA

lingua: Inglese

Femoroacetabular impingement: correlation between imaging parameters, sport activity, and chondral damage

Andrea BISCIOTTI 1, FRANCESCO POGLIACOMI 1, Riccardo CEPPARULO 2, Gennaro FIORENTINO 3, Francesco DI PIETTO 4, Luca M. SCONFIENZA 5, 6, Alessandro BISCIOTTI 7, Gian Nicola BISCIOTTI 8

1 Department of Medicine and Surgery, University of Parma, Parma, Italy; 2 Santa Maria Hospital, Borgo Val di Taro, Parma, Italy; 3 Humanitas Gavezzeni Hospital, Bergamo, Italy; 4 Pineta Grande Hospital, Castel Volturno, Caserta, Italy; 5 IRCCS Istituto Ortopedico Galeazzi, Milan, Italy; 6 Dipartimento di Scienze Biomediche per la Salute, Università degli Studi di Milano, Milan, Italy; 7 Kinemove Reabilitation Center Pontremoli Pontremoli, Massa Carrara, Italy; 8 Paris Saint Germain FC, Paris, France


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BACKGROUND: Femoroacetabular impingement is characterised by an abnormal contact between the acetabulum and the femoral head-neck junction. Femoroacetabular impingement shows three main clinical frameworks: Pincer-FAI, Cam-FAI and Cam-Pincer mixed form. The aim of the study was to investigate the correlation between femoroacetabular impingement, imaging, activity and chondral damages.
METHODS: Forty-one patients, undergoing arthroscopic chondroartroplasty for Cam and Cam-Pincer mixed form were considered. All patients underwent an X-ray hip evaluation (G1 group), while 15 patients also underwent a pelvis MRI evaluation (G2 subgroup). For G1 patients, the superior-inferior offset ratio and alpha angle were calculated from the X-ray examinations. For G2 patients, the antero-posterior offset ratio was also calculated from pelvis MRI. Chondral damage was classified according to the Outerbridge classification.
RESULTS: The superior-inferior offset ratio and the antero-posterior offset ratio were respectively 0.50 ± 0.23 and 0.33 ± 0.19. The α angle predictive for a chondral damage of IV degree was 81.5°.The chondral damage of the patients suffering from Cam-FAI and Cam-Pincer mixed form were respectively 3.53±0.80 and 3.00±1.41.
CONCLUSIONS: From the results was possible to: - Elaborate two tables providing a reliable indirect calculation of the alpha angle. - Establish an alpha angle cut-off value indicative for a IV degree chondral damage. - Show that Pincer-FAI does not represent an aggravating factor for chondral damage - Show that the level of sports activity was related to the severity of chondral damage. - Show that a physically demanding occupation was not an aggravating factor for chondral damage.


KEY WORDS: Pincer-FAI; Cam-FAI; Arthroscopy; Chondropathy; Sport activity

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