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BACKGROUND: Numerous scholars have previously researched certain greater tuberosity fractures and the procedures used to treat them. Few researchers, however, have studied the comminuted split fracture of the greater tuberosity of the humerus (Liu-Gang type IV) with rotator cuff tear in great detail. OBJECTIVE: To compare the clinical therapeutic effect of open repair position modified calcaneal plate combined with suture anchors and proximal humeral internal locking system (PHILOS) plate in the treatment of comminuted fracture of split-type greater tuberosity of humerus combined with rotator cuff tears (Liu-Gang type IV). METHODS: Case data of 30 patients with comminuted fracture of split-type greater tuberosity of humerus combined with rotator cuff tears (Liu-Gang type IV) from May 2012 to May 2022 were retrospectively analyzed. They were divided into the modified calcaneal plate combined with suture anchor group (group A) and the PHILOS with #2 Johnson group (group B), with 15 cases in each group. Intraoperative blood loss, surgical time, and incision length of all patients were recorded. Pain visual analog scale score, Constant-Murley score, as well as shoulder joint abduction, forward flexion, external rotation, and dorsal expansion activities during the last follow-up (> 1 year) were evaluated. RESULTS AND CONCLUSION: (1) The surgical incision length and operation time were shorter, and blood loss was less in group A than those in group B (P < 0.05). (2) No significant difference in visual analog scale score and Constant-Murley score was detected between the two groups (P > 0.05). (3) During the last follow-up, forward flexion in group A was better than that in group B (P < 0.05). No significant difference in abduction, external rotation, and dorsal expansion was determined between group A and group B (P > 0.05). (4) In terms of complications, there was 1 case of shoulder joint pain and discomfort in group A (7%), 2 cases of subacromial impingement syndrome, 2 cases of upward movement of nodules, and 2 cases of shoulder joint pain (40%) in group B. There were significant differences in complication rates between the two groups (P=0.031). (5) In summary, the modified calcaneal plate combined with suture anchors in the treatment of comminuted fracture of split-type greater tuberosity of humerus combined with rotator cuff tears (Liu-Gang type IV) could better restore the forward flexion function of the shoulder joint and has a small incision, less blood loss, shorter operation time and fewer complications. [ABSTRACT FROM AUTHOR]

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Objective To investigate the significance of CT values of proximal humerus cancellous bone in the evaluation of elderly proximal humerus fractures. Methods The clinical data of 118 elderly patients who underwent shoulder CT examination at this hospital from January to December 2021 were retrospectively analyzed, including 59 patients with proximal humerus fracture (fracture group) and 59 patients with non-fracture (non-fracture group). CT values of proximal humerus bone were measured to understand whether there were differences in CT values between the two groups, and the relationship between CT values and the severity of proximal humerus fracture was further analyzed. Results The CT value of proximal humerus cancellous bone decreased with age in 118 patients, and the CT value was significantly lower in female patients [(93. 18+ 16. 30) HU] than in male [(103. 91 ± 16. 72) HU], and lower in patients with proximal humerus fracture [(94.17±14.39) HU] than in the non-fracture group [(100, 56±19. 23) HU], and the differences were statistically significant (P<0.05). There was no significant difference in CT value between patients with simple fracture and complex fracture (P>0.05). Conclusion In elderly patients, CT values of proximal humeral cancellous bone may have significance in predicting proximal humeral fractures, but not in predicting fracture severity. [ABSTRACT FROM AUTHOR]

A two-year phytoremediation demonstration project of slightly cadmium-contaminated farmland soil was carried out with two cropping systems, i.e., Amaranthus hypochondriacus monoculture and A.hypochondriacus-Bletilla erhizoma intercropping. The results showed that the equivalent yield of A.hypochondriacus was increased by 17.3% and the Cd concentration of each parts was reduced by 14.9% to 26.6% under the intercropping system, but there was no significant reduction in the phytoremediation efficiency; intercropping reduced the Cd concentration of the tuber of B.erhizoma by 29.5%, providing extra economic income during phytoremediation. Furthermore, a cost-benefit and popularization ability analysis over a ten-year lifetime was conducted. The benefits of intercropping would offset the total cost in 5 years.A.hypochondriacus-B.erhizoma intercropping system had more application and promotion value. [ABSTRACT FROM AUTHOR]

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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.)

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Copyright of Journal of Natural Disasters is the property of Gai Kan Bian Wei Hui 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.)

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The Chinese Celestial Eye, or five-hundred-meter aperture spherical radio telescope, or FAST for short, is a major scientific and technological infrastructure in China. The feed support system is an important part of FAST for high-precision pose adjustment of the feed cabin. In order to ensure the normal operation of FAST, the security inspection of the feed support system must be carried out regularly. Therefore, it is necessary to design a robot system that can independently detect the defects of feed support cables. The overall scheme of the robot was designed based on its working environment on the FAST feed support cables. According to the characteristics of many obstacles of the cables, the inspection robot was designed as the form of bottom opening, multi wheel holding cable and multi section series connection; according to the characteristics of length and steepness of the cables, the driving mode of winch traction drive at both ends as the main and wheel drive as the auxiliary was determined. Based on the overall design scheme, the detailed structural design of each robot section was carried out to ensure that the robot can reliably move along the cable and avoid obstacles. The connection mechanism with active adjustment and elastic adaptation was designed to realize connection and relative position adjustment between robot sections. Finally, the prototype of the robot was tested. The experimental results show that the robot can stably move on the cable and avoid obstacles, and verify the required motion ability of the designed robot system to detect along FAST cables. [ABSTRACT FROM AUTHOR]