Both ends of the specimen were mounted, leaving the center 3 vertebrae free. The lower level of free vertebrae was artificially injured and cement augmented.
两组样本的末端被包埋，留下中间3节自由椎体，较低节段的自由椎体被认为的损害并由骨水泥充填。
Both ends of the specimen were mounted, leaving the center 3 vertebrae free. The lower level of free vertebrae was artificially injured and cement augmented.
两组样本的末端被包埋，留下中间3节自由椎体，较低节段的自由椎体被认为的损害并由骨水泥充填。
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