Conclusion Simple laminectomy or discectomy was not indication for lumbar spondylolisthesis. Deficient decompression, the internal fixation failure, no bone graft or nonunion was the main causes of implant failure.
Results: It was found that there were 7 cases of screw loosening or breaking in the internal fixation,1 case of connecting pole loosening or dropping,3 cases of concurrent infection from internal fixators loosening,4 cases of internal fixation screw entering the spinal canal,being driven into the intervertebral space or going through the vertebra body,5 cases of repeated postoperative lumbar pain,2 cases of postoperative pseudoarthrosis formation,3 cases of the height loss of the vertebra body after the internal fixators was taken out.
Application of CITYgreen model in benefit assessment of Nanjing urban green space in carbon fixation and runoff reduction
The results indicate that carbon fixation benefits received by the main city of Nanjing is 5%-60% of that by natural forests on a per unit area basis.
The ecological value of carbon fixation and runoff reduction of the Nanjing urban green space was about 177 million RMB in total.
The bacteria can assimilate oil hydrocarbons as the sole source of carbon and energy, both in the presence of fixed nitrogen and during nitrogen fixation.
The most active enzyme fixation was observed in the case of a late (after 14 days) application of nitrates in the variants with both separate inoculations and inoculation with the binary preparation of A.