56 Fig. 5 Proximal and distal translation of superior and inferior poles of patella within trochlear groove. (a) Proximal translation (b) Distal translation Fig. 6 Assessment for patellofemoral joint crepitation during active range of motion. (a) Extension (b) Flexion Curr Rev Musculoskelet Med (2008) 1:53–60 Fig. 7 Hamstring-popliteal angle Fig. 8 Palpation of pes anserine bursae