ABSTRACT
BACKGROUND:For the elderly osteoporotic thoracolumbar burst fractures without nerve root symptoms,it is difficult to choose between traditional surgical and conservative treatment,because they have their advantages and disadvantages.How to select their advantages and to discard their disadvantages? Concept of minimal invasion builds a new platform and provides a new way of thinking and therapeutic tool.OBJECTIVE:To design and develop a new thoracolumbar distraction reduction devicein vitro in the repair of elderly osteoporotic burst fractures.METHODS:We designed and developed a new type of thoracic and lumbar spinein vitrodistraction reduction device,including bracket,guide pin and two holow screws.Its characteristic is that it also contained distractor,pressurizer and wrench.In accordance with the theory of muscles as important as bones and actual anatomical condition,bone fragment in the spine canal was restored using percutaneous ligament reconstructive technique.RESULTS AND CONCLUSION:This thoracic and lumbar spinein vitro distraction reduction device combined with ligament reconstructive technique can be used in elderly osteoporotic burst fractures and elderly osteoporotic compression fractures.It is percutaneous minimaly invasive operation,can restore the height of anterior and central cylinders and correct Cobb's angle through multi angle distraction.Simultaneously,percutaneousvertebroplasty can be utilized.Bone cement was infused in the injured vertebra.According to patients' economic situation,percutaneous baloon kyphoplasty can be employed.These can provide an inexpensive,less-pain,less-invasive way to repair.