J. Vanbiervliet, J. Bellemans, C. Verlinden, J.-P. Luyckx, L. Labey, B. Innocenti, H. Vandenneucker. The influence of malrotation and femoral component material on patellofemoral wear during gait. J Bone Joint Surg Br 2011 93-B: 1348-1354

A. P. Monk, H. A. Doll, C. L. M. H. Gibbons, S. Ostlere, D. J. Beard, H. S. Gill, D. W. Murray. The patho-anatomy of patellofemoral subluxation. J Bone Joint Surg Br 2011 93-B: 1341-1347