Fig. 5

Mean patellofemoral contact pressure (median, minimum, maximum) at 30° knee flexion and with 2, 10 and 20 N graft pre-tensioning (Pnat: Native knee joint; Pa: Anatomical patellar double-bundle technique; Pp: Non-anatomical, proximal patellar single-bundle technique; Pd: Non-anatomical, distal patellar single-bundle technique; Fp: Non-anatomical double-bundle fixation 1 cm proximal to the anatomical femoral insertion; Fv: Non-anatomical double-bundle fixation 1 cm ventral to the anatomical femoral insertion). *p≤0.05