Second, peel color Peel background from the green lighter or show the inherent color of the species. When the fruit surface has waxy appearance, luster, and fragrance, it indicates that the fruit is ripe. The seed color of the golden pear is mostly half of the seed seed to brown seed; Fengshui pear seed to seed is brown.
Fourth, the fruit development period (full bloom to the number of days of maturity) Golden pears 140 days after flowering, Fenghui pear 130 days harvest is appropriate. The storage of golden pears in medium and long-term needs to be harvested in early September; the quality of fruits harvested in mid-to-late September will be improved, but not long-term storage; Fengshui pears are generally harvested in late August and early September.
Spinal fixation system consists of posterior spinal fixation system,minimally invasive spinal system,posterior cervical fixation system,anterior cervical plate system,laminar shapping plate system and interbody fusion cage system.
Cervical and lumbar segmental implants are the most common types of spinal internal fixation, which can be roughly divided into anterior and posterior internal fixation according to their fixed positions and surgical approaches.
The anterior cervical vertebra is mostly fixed with locking plates and fixed screws,what are mostly made of titanium alloy materials; The posterior approach was fixed using the pedicle screw and rod system.
In some cases of spinal vertebrae bone defect, it is also necessary to implant titanium cage or PEEK cages to promote bone fusion of adjacent vertebrae. The titanium mesh cage refers to a cage shaped container made of titanium alloy material, which is loaded with autologous or allogeneic bone and placed in the spinal vertebrae bone defect, which not only serves as a strength support but also plays a role in bone fusion.
spinal fracture,Pedicle Screws,Spinal Implant,Spine Implants
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