Figure 3.

Tendon mechanical properties. A) Cross-sectional area was significantly decreased in the PEMF group compared to the non-PEMF group at 4 weeks. No differences were noted at 8 and 16 weeks. (Control area= 1.34 mm²) B) No differences in percent relaxation were noted at any time point. (Control % relaxation= 47%) C) Modulus was significantly increased by 100% at 4 weeks and 60% at 8 weeks in the PEMF group compared to the non-PEMF group. No differences were noted at 16 weeks. (Control modulus= 290.3 MPa) D) No differences were noted in stiffness at any time point. (Control stiffness= 31.15 N/mm) E) Maximum stress was significantly increased at 4 weeks in the PEMF group compared to the non-PEMF group. No differences were noted at 8 and 16 weeks. No error bar is present in the PEMF group at 8 weeks due to small sample size with physiological failure (n=2). F) No differences were noted in maximum load at any time point. Data represented as mean ± SD. Due to non-physiological failure location (typically at 8 and 16 weeks); maximum stress and maximum load data points which did not fail physiologically (i.e., at the injury site) were excluded, resulting in smaller n’s. Control maximum stress and maximum load were not calculated for a similar reason.