Nicola C Casartelli1, Romana Brunner2, Nicola A Maffiuletti2, Mario Bizzini2, Michael Leunig3, Christian W Pfirrmann4, Reto Sutter4. 1. Human Performance Lab, Schulthess Clinic, Switzerland; Laboratory of Exercise and Health, Department of Health Sciences and Technology, ETH Zurich, Switzerland. Electronic address: nicola.casartelli@kws.ch. 2. Human Performance Lab, Schulthess Clinic, Switzerland. 3. Department of Orthopaedic Surgery, Schulthess Clinic, Switzerland. 4. Department of Radiology, Orthopaedic University Hospital Balgrist, Switzerland; Faculty of Medicine, University of Zurich, Switzerland.
Abstract
OBJECTIVES: Aim of this study was to evaluate the flexion-adduction-internal rotation (FADIR) test accuracy for screening cam and pincer morphology in youth male ice hockey players without diagnosed hip disorders. DESIGN: Cross-sectional study. METHODS: Seventy-four ice hockey players with a mean age of 16 years (range: 13-20 years) were assessed unilaterally. The presence of cam and pincer morphology was evaluated using the FADIR test and magnetic resonance imaging (MRI) (reference standard). Positive FADIR test consisted of groin pain during the maneuver, while positive MRI findings consisted of (1) pure cam, pure pincer or combined morphology and acetabular labral alterations, or (2) pure cam or combined morphology and acetabular labral alterations. Sensitivity, specificity, positive and negative likelihood ratios, and positive and negative predictive values were calculated. RESULTS: For pure cam, pure pincer or combined morphology as positive MRI findings, the FADIR test demonstrated a sensitivity of 41%, specificity of 47%, positive likelihood ratio of 0.78, negative likelihood ratio of 1.24, positive predictive value of 19% and negative predictive value of 73%. For pure cam or combined morphology as positive MRI findings, the FADIR test showed a sensitivity of 60%, specificity of 52%, positive likelihood ratio of 1.24, negative likelihood ratio of 0.78, positive predictive value of 16% and negative predictive value of 89%. CONCLUSIONS: The FADIR test is inadequate for screening cam and pincer morphology in youth ice hockey players without diagnosed hip disorders because of the large number of false positive test outcomes.
OBJECTIVES: Aim of this study was to evaluate the flexion-adduction-internal rotation (FADIR) test accuracy for screening cam and pincer morphology in youth male ice hockey players without diagnosed hip disorders. DESIGN: Cross-sectional study. METHODS: Seventy-four ice hockey players with a mean age of 16 years (range: 13-20 years) were assessed unilaterally. The presence of cam and pincer morphology was evaluated using the FADIR test and magnetic resonance imaging (MRI) (reference standard). Positive FADIR test consisted of groin pain during the maneuver, while positive MRI findings consisted of (1) pure cam, pure pincer or combined morphology and acetabular labral alterations, or (2) pure cam or combined morphology and acetabular labral alterations. Sensitivity, specificity, positive and negative likelihood ratios, and positive and negative predictive values were calculated. RESULTS: For pure cam, pure pincer or combined morphology as positive MRI findings, the FADIR test demonstrated a sensitivity of 41%, specificity of 47%, positive likelihood ratio of 0.78, negative likelihood ratio of 1.24, positive predictive value of 19% and negative predictive value of 73%. For pure cam or combined morphology as positive MRI findings, the FADIR test showed a sensitivity of 60%, specificity of 52%, positive likelihood ratio of 1.24, negative likelihood ratio of 0.78, positive predictive value of 16% and negative predictive value of 89%. CONCLUSIONS: The FADIR test is inadequate for screening cam and pincer morphology in youth ice hockey players without diagnosed hip disorders because of the large number of false positive test outcomes.
Authors: Till D Lerch; Sébastien Zwingelstein; Florian Schmaranzer; Adam Boschung; Markus S Hanke; Inga A S Todorski; Simon D Steppacher; Nicolas Gerber; Guodong Zeng; Klaus A Siebenrock; Moritz Tannast Journal: Orthop J Sports Med Date: 2021-05-28
Authors: Guodong Zeng; Celia Degonda; Adam Boschung; Florian Schmaranzer; Nicolas Gerber; Klaus A Siebenrock; Simon D Steppacher; Moritz Tannast; Till D Lerch Journal: Orthop J Sports Med Date: 2021-11-24
Authors: Josefine E Naili; Anders Stålman; Anders Valentin; Mikael Skorpil; Lars Weidenhielm Journal: Arch Orthop Trauma Surg Date: 2021-09-28 Impact factor: 2.928
Authors: Lindsey Brown-Taylor; Jordan Wilson; Michael McNally; Jennifer Perry; Rebecca D Jackson; Timothy E Hewett; John Ryan; Michael V Knopp; Jason E Payne; Stephanie Di Stasi Journal: Gait Posture Date: 2019-11-11 Impact factor: 2.840