Total knee arthroplasty for the treatment of bilateral knee rheumatoid arthritis in the same periodChen Rong-bo, Hou Na, Wang Ren, He Ming, Wang Er-feng, Zhang Wei-tao, Li Xiao-jian, Li Xian-zhi493-498
Evaluation and influencing factors of knee function in aged patients with osteoarthritis before and after total knee arthroplastyZhang Sheng-hai, Fu Li-ming, Ma Zhao-ji, Jiang Guo-wang499-503
Epidemiology of total knee arthroplasty：a retrospective analysis among 1 146 cases in Hefei City from 2008 to 2013Xu Peng-fei, Yin Zong-sheng, Gao Wei-lu, Ma Zhi-xiang504-509
Uncemented prosthesis revision of failed cemented hip arthroplasty：mid-term resultsLi Peng, Zhu Zhi-qi, Hou Ming, Shi Zhan-jun510-515
Total hip arthroplasty for ankylosing spondylitis：the spine-pelvis sagittal balance and quality of lifeGao Yi, Wang Bin, Xie Zi-kang, Shen Peng-fei, Xu Jian-da, Zheng Chong, Qu Yu-xing516-521
Restoration of fracture and dislocation of lower cervical spine：bone graft fusion and cervical stabilityWang Jian-yuan, Deng Qiang, Sheng Wei-bin, Lu Yong-jiang522-530
Conservative treatment of mild ossification of cervical posterior longitudinal ligament：prognostic factors and timing of surgical repairShen Cang-hai, Feng Yong-jian, Wang Li-guo, Yang Cheng, Peng Ning-ning, Wang Gui-jiang, Guo Xu531-536
Treatment for thoracolumbar spine infection without removing internal fixationLin Xu, Tan Lun, Zeng Jun, Wu Chao, Ding Yong, Guo Yong537-542
Modified transmultifidus approach and posterior central approach of vertebrae pedicle screws in the treatment of thoracolumbar vertebral fractures：vertebral stability and related indexesHu Zheng-xia, Li Kai-nan, He Zhi-yong543-547
Sextant system fixation for the repair of lumbar fracture：ratio of anterior to posterior border height of the injured vertebra and kyphosis Cobb angleLiu Cheng-jun, Gu Zu-chao, Zhang Yu548-553
