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Table 1 Material properties of the rat patellar tendon for the 4 groups (Mean ± SD)

From: Effect of prostaglandin E2 injection on the structural properties of the rat patellar tendon

Group Ultimate Stress (MPa) Strain to Ultimate Load (mm/mm) Elastic Modulus (MPa) Energy Density to Ultimate Load (mJ/mm3)
Control 26.2 ± 6.8 0.34 ± 0.08 84.5 ± 23.2 4.66 ± 2.38
Saline 21.6 ± 4.7 0.28 ± 0.06 83.2 ± 17.1 3.14 + 0.98
PGE2-4 wks 27.1 ± 5.3 0.31 ± 0.09 90.0 ± 18.2 4.47 + 1.67
PGE2-8 wks 28.2 ± 5.9 0.24 ± 0.05 124.0 ± 35.0*,#,+ 3.96 ± 1.22
F-test P = 0.091 P = 0.053 P = 0.004 P = 0.226
  1. * Indicates difference from control group (P < 0.05) # Indicates difference from saline-injected group (P < 0.05).+ Indicates difference from PGE2-4 wks injection group (P < 0.05).