Accuracy of Femur Angles Estimated by IMUs During Clinical Procedures Used to Diagnose Femoroacetabular Impingement. - Ryan S. McGinnis; Stephen M. Cain; Sui Tao; David Whiteside; Grant C. Goulet; Elizabeth C. Gardner; Asheesh Bedi; Noel C. Perkins (IEEE Trans. Biomed. Eng., 2015)