Because the load to deformation ratio is higher in the larger change, ie, compression.
Stretching and compressing bones?
The Young's modulus of elasticity when a bone is stretched is : 16*109 and when it is compressed, it is 9*109 N/m2. That means, change in length will be more if you compress a bone as compared to stretching it.
What is the biomechanical reason behind this ?
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