Fig. 4

Maximum, minimum, and average knee joint angles and knee range of motion (ROM) for the tendon excision (TE) only group and tendon excision and replacement (PET-SI) group at baseline (B, pre-surgery), 2 weeks post-surgery, and 8 weeks post-surgery during A stance phase of gait, and B) swing phase of gait. Error bars represent one standard deviation. Ext – Extension; Flex – Flexion. A larger angle indicates greater extension/less flexion. * indicates significant (p < 0.05) differences between timepoints across groups. a, b indicate significant (p < 0.05) differences between timepoints within a group. Table 3 gives specific p-values for each comparison