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Copyright of Journal of Functional Materials / Gongneng Cailiao is the property of Chongqing Functional Materials Periodical Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

BACKGROUND: Hip replacement has become the main treatment for femoral neck fracture in the elderly at present, but there is no simple, effective or reproducible method to reduce the incidence of unequal length of lower limbs. OBJECTIVE: To investigate the effectiveness of head-neck ratio in balancing the difference of lower extremity length in femoral neck fracture replacement. METHODS: From January 2017 to March 2019, 132 aged patients undergoing unilateral artificial femoral head replacement for femoral neck fracture were selected as the research object. From January 2017 to February 2018, 68 cases were treated by traditional method of equilibrium of lower limb length, known as the traditional group. From March 2018 to March 2019, 64 patients with head and neck for spell equilibrium in lower limb length were included in the improved group. The operation time, hospital stay, postoperative double lower limbs length difference, the last follow-up function Harris hip score and complications after surgery were selected for retrospective analysis in both groups. RESULTS AND CONCLUSION: (1) All patients were followed up for 6-20 months. (2) There were no statistically significant differences between the modified group and the traditional group in operation time, hospital stay, and postoperative complications (P > 0.05), but the improved group (4.56±3.07) mm had a significant advantage over the traditional group (6.09±3.31) mm in the balanced length of lower limbs, and the difference between the two groups was statistically significant (P < 0.05). (3) At the last follow-up, Harris score of hip function in the improved group (92.36±3.35) points was higher than that in the traditional group (91.09±3.41) points, and the difference between the two groups was statistically significant (P < 0.05). (4) These results indicate that artificial femoral head replacement for elderly patients with unilateral femoral neck fracture using head-neck ratio is simple and effective. It is effective in balancing the unequal length of lower limbs after surgery and promoting the recovery of hip function. [ABSTRACT FROM AUTHOR]

BACKGROUND: Peripheral nerve injury has been very common in clinical work. Although microsurgical technique can restore the continuity of the injured nerve well, the nerve repair effect is still unsatisfactory due to the high degree of differentiation and low regeneration ability of the peripheral nerve tissue, which seriously affects the quality of life of patients. At present, there is no unified conclusion on the microenvironment of peripheral nerve injury, and there are many repair methods in common use. OBJECTIVE: To review the microenvironment of peripheral nerve injury and the repair methods of peripheral nerve injury. METHODS: A computer-based online search of PubMed and CNKI databases was performed for the articles published from January 1964 to September 2019. The key words were “peripheral nerve injury; microenvironment; microsurgical technique; small gap bridging” in English and Chinese, respectively. Finally, 57 eligible articles were included to review. RESULTS AND CONCLUSION: (1) After a series of animal experiments and clinical studies, changes in microenvironment such as the establishment of nerve regeneration channels, neurotrophic factors, immune response, inflammatory response, and hormone regulation have been confirmed to be important factors affecting peripheral nerve repair. (2) It is feasible to repair the peripheral nerve injury by using biological conduit small gap bridging instead of the traditional external and fascicular membrane. [ABSTRACT FROM AUTHOR]

Copyright of Chinese Journal of Tissue Engineering Research / Zhongguo Zuzhi Gongcheng Yanjiu is the property of Chinese Journal of Tissue Engineering Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Tissue Engineering Research / Zhongguo Zuzhi Gongcheng Yanjiu is the property of Chinese Journal of Tissue Engineering Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)