Short-term effects of COVID-19 on the risk of traumatic fractures in China cities

Lv, Hongzhi; Zhang, Xiaolin; Wang, Juan; Hou, Zhiyong; Wang, Haicheng; Li, Chao; Wang, Wenjuan; Chen, Wei

doi:10.1038/s41598-022-10531-2

Cited by 9 publications

(4 citation statements)

References 38 publications

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“…Since weather factors such as temperature and humidity have been proven to have a significant relationship with the occurrence and transmission of many infectious diseases (9,(32)(33)(34), in our study, the association between weather factors and scrub typhus was explored using DLNM (17,35).…”

Section: Discussionmentioning

confidence: 99%

The Temporal Lagged Relationship Between Meteorological Factors and Scrub Typhus With the Distributed Lag Non-linear Model in Rural Southwest China

Hong-xiu

Shan

et al. 2022

Front. Public Health

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Background:Meteorological factors can affect the emergence of scrub typhus for a period lasting days to weeks after their occurrence. Furthermore, the relationship between meteorological factors and scrub typhus is complicated because of lagged and non-linear patterns. Investigating the lagged correlation patterns between meteorological variables and scrub typhus may promote an understanding of this association and be beneficial for preventing disease outbreaks.MethodsWe extracted data on scrub typhus cases in rural areas of Panzhihua in Southwest China every week from 2008 to 2017 from the China Information System for Disease Control and Prevention. The distributed lag non-linear model (DLNM) was used to study the temporal lagged correlation between weekly meteorological factors and weekly scrub typhus.ResultsThere were obvious lagged associations between some weather factors (rainfall, relative humidity, and air temperature) and scrub typhus with the same overall effect trend, an inverse-U shape; moreover, different meteorological factors had different significant delayed contributions compared with reference values in many cases. In addition, at the same lag time, the relative risk increased with the increase of exposure level for all weather variables when presenting a positive association.ConclusionsThe results found that different meteorological factors have different patterns and magnitudes for the lagged correlation between weather factors and scrub typhus. The lag shape and association for meteorological information is applicable for developing an early warning system for scrub typhus.

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Section: Discussionmentioning

confidence: 99%

The Temporal Lagged Relationship Between Meteorological Factors and Scrub Typhus With the Distributed Lag Non-linear Model in Rural Southwest China

Hong-xiu

Shan

et al. 2022

Front. Public Health

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“…As the population ages, the incidence rate of femoral fractures increases, with the rate in the population over 65 years of age being 1.11 per thousand for men and 1.39 per thousand for women. Additionally, Lv et al [5] conducted a study on the short-term impact of COVID-19 on the risk of traumatic fractures in Chinese cities. The study collected data from 67,249 patients, with femoral fractures accounting for 13.6% of all types of fractures.…”

Section: Introductionmentioning

confidence: 99%

Biomechanical Study on the Treatment of Femoral Neck Fractures with a Novel Proximal Femoral Bionic Nail

Zhang,

Ren,

Yao

et al. 2024

Preprint

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Objective: A novel Proximal Femoral Bionic Nail (PFBN) has been developed by a research team for the treatment of femoral neck fractures. This study aims to compare the biomechanical properties of the innovative PFBN with those of the conventional Inverted Triangular Cannulated Screw (ITCS) fixation method through biomechanical testing. Methods: Sixteen male femoral specimens preserved in formalin were selected, with the donors’ age at death averaging 56.1±6.3 years (range 47–64 years), and a mean age of 51.4 years. The femurs showed no visible damage and were examined by X-rays to exclude diseases affecting bone quality such as tumors, severe osteoporosis, and deformities. The 16 femoral specimens were randomly divided into an experimental group (n=8) and a control group (n=8). All femurs were prepared with Pauwels type III femoral neck fractures, fixed with PFBN in the experimental group and ITCS in the control group. Displacement and stress limits of each specimen were measured through cyclic compression tests and failure experiments, and vertical displacement and strain values under a 600N vertical load were measured in all specimens through vertical compression tests. Results: In the vertical compression test, the average displacement at the anterior head region of the femur was 0.362mm for the PFBN group, significantly less than the 0.480mm for the ITCS group (p<0.001). At the fracture line area, the average displacement for the PFBN group was also lower than that of the ITCS group (0.196mm vs. 0.324mm, p<0.001). The difference in displacement in the shaft area was smaller, but the average displacement for the PFBN group (0.049mm) was still significantly less than that for the ITCS group (0.062mm, p=0.016). The situation was similar on the posterior side of the femur. The average displacements in the head area, fracture line area, and shaft area for the PFBN group were 0.300mm, 0.168mm, and 0.081mm, respectively, while those for the ITCS group were 0.558mm, 0.274mm, and 0.041mm, with significant differences in all areas (p<0.001). The average strain in the anterior head area for the PFBN group was 4947μm/m, significantly less than the 1540μm/m for the ITCS group (p<0.001). Likewise, in the fracture line and shaft areas, the average strains for the PFBN group were significantly less than those for the ITCS group (p<0.05). In the posterior head area, the average strain for the PFBN group was 4861μm/m, significantly less than the 1442μm/m for the ITCS group (p<0.001). The strain conditions in the fracture line and shaft areas also showed the PFBN group was superior to the ITCS group (p<0.001). In cyclic loading experiments, the PFBN fixation showed smaller maximum displacement (1.269mm vs. 1.808mm, p<0.001), indicating better stability. In the failure experiments, the maximum failure load that the PFBN-fixated fracture block could withstand was significantly higher than that for the ITCS fixation (1817N vs. 1116N, p<0.001). Conclusion: The PFBN can meet the biomechanical requirements for internal fixation of femoral neck fractures. PFBN is superior in biomechanical stability compared to ITCS, particularly showing less displacement and higher failure resistance in cyclic load and failure experiments. While there are differences in strain performance in different regions between the two fixation methods, overall, PFBN provides superior stability.

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“…A substantial body of literature has demonstrated a significant correlation between meteorological factors, including temperature, precipitation, and hours of sunshine, and the occurrence and spread of infectious diseases [5][6][7]. The risk of scrub typhus infection is primarily influenced by meteorological factors through their impact on the activity of chiggers and hosts, as well as the likelihood of contact between chiggers and humans [8,9].…”

Section: Introductionmentioning

confidence: 99%

Exploring the effects and interactions of meteorological factors on the incidence of scrub typhus in Ganzhou City, 2008–2021

Pan,

Huang,

et al. 2024

BMC Public Health

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Background Scrub typhus poses a substantial risk to human life and wellbeing as it is transmitted by vectors. Although the correlation between climate and vector-borne diseases has been investigated, the impact of climate on scrub typhus remains inadequately comprehended. The objective of this study is to investigate the influence of meteorological conditions on the occurrence of scrub typhus in Ganzhou City, Jiangxi Province. Methods From January 1, 2008 to December 31, 2021, we gathered weekly records of scrub typhus prevalence alongside meteorological data in Ganzhou city. In order to investigate the correlation between meteorological factors and scrub typhus incidence, we utilized distributional lag nonlinear models and generalized additive models for our analysis. Results Between 2008 and 2021, a total of 5942 cases of scrub typhus were recorded in Ganzhou City. The number of females affected exceeded that of males, with a male-to-female ratio of 1:1.86. Based on the median values of these meteorological factors, the highest relative risk for scrub typhus occurrence was observed when the weekly average temperature reached 26 °C, the weekly average relative humidity was 75%, the weekly average sunshine duration lasted for 2 h, and the weekly mean wind speed measured 2 m/s. The respective relative risks for these factors were calculated as 3.816 (95% CI: 1.395–10.438), 1.107 (95% CI: 1.008–1.217), 2.063 (95% CI: 1.022–4.165), and 1.284 (95% CI: 1.01–1.632). Interaction analyses showed that the risk of scrub typhus infection in Ganzhou city escalates with higher weekly average temperature and sunshine duration. Conclusion The findings of our investigation provide evidence of a correlation between environmental factors and the occurrence of scrub typhus. As a suggestion, utilizing environmental factors as early indicators could be recommended for initiating control measures and response strategies.

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Short-term effects of COVID-19 on the risk of traumatic fractures in China cities

Cited by 9 publications

References 38 publications

The Temporal Lagged Relationship Between Meteorological Factors and Scrub Typhus With the Distributed Lag Non-linear Model in Rural Southwest China

The Temporal Lagged Relationship Between Meteorological Factors and Scrub Typhus With the Distributed Lag Non-linear Model in Rural Southwest China

Biomechanical Study on the Treatment of Femoral Neck Fractures with a Novel Proximal Femoral Bionic Nail

Exploring the effects and interactions of meteorological factors on the incidence of scrub typhus in Ganzhou City, 2008–2021

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