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Table 5 Correlations between heel raise index and mechanical properties at 6, 12 and 18 weeks after injury. N = 10. Strain per force has been inverted to become specific stiffness. Primary comparisons in bold

From: Mechanical properties during healing of Achilles tendon ruptures to predict final outcome: A pilot Roentgen stereophotogrammetric analysis in 10 patients

   Rho p
Specific stiffness Mean 6, 12, 18 0.29 0.39
Modulus Mean 6, 12, 18 0.76 0.02
Transverse area Mean 6, 12, 18 -0.71 0.03
Specific stiffness 6 0.30 0.37
Specific stiffness 12 0.46 0.17
Specific stiffness 18 0.19 0.57
Modulus 6 0.66 0.05
Modulus 12 0.73 0.03
Modulus 18 0.59 0.08
Transverse area 6 -0.45 0.17
Transverse area 12 -0.69 0.04
Transverse area 18 -0.74 0.02