It is necessary to realize the mechanical properties of the C2-3、T10-11、L3-4 in order to prevent and treat the herniated disk. So we test the bent experiment of the C2-3、T10-11、L3-4 taken from the fresh dead bodies and provide biological mechanical data for clinic. The experimental specimens are taken from male fresh corpses of normal people, 20-30 years old respectively. The C1-S1 spine specimens are taken from the bodies within one hour after death, and the C2-3、T10-11、L3-4 intervertebral discs and vertebral bodies are cut by line cutting, each thirteen samples. Do the test on the Japanese shimadzu electronic universal testing aircraft, the experimental speed is 5mm/min, obtain the bending mechanics performance index of maximum load、 maximum bending moment、maximum stress of the C2-3、T10-11、L3-4 groups. The maximum load and maximum bending moment of C2-3 group is less than the T10-11 group and the L3-4 group with a significant difference(p<0.05). The maximum stress of C2-3 group is less than T10-11 group, with a significant difference(p<0.05). The maximum stress of L3-4 group is greater than the T10-11 group and the C2-3 group with a significant difference(p<0.05).
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