椎弓根钉棒系统治疗胸腰段椎体骨折术后松动断裂的原因及防治
추궁근정봉계통치료흉요단추체골절술후송동단렬적원인급방치
The main cause and countermeasure of internal fixation loosening and disruption in the treatment of thoracolumbar fracture with vertebra pedicle screw-rod system
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