1.Animal Model of Chronic Obstructive Pulmonary Disease and Intervention Effect of Traditional Chinese Medicine: A Review
Jiyu ZOU ; Lijian PANG ; Tianjiao WANG ; Ningzi ZANG ; Zhongxue ZHAO ; Yongming LIU ; Qi SI ; Tianya CAO ; Xuenan MA ; Ying WANG ; Jiaran WANG ; Xiaodong LYU
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(3):294-303
Chronic obstructive pulmonary disease (COPD), as one of the three major causes of death, is a complex systemic disease with high prevalence, high mortality, high disability, frequent acute exacerbations, and a variety of pulmonary complications. The pathogenesis is complex. Western medicine has no effective specificity scheme for a complete cure. However, multiple-component and multiple-target characteristics of traditional Chinese medicine (TCM) demonstrate significant advantages in COPD treatment through multi-link, multi-pathway, and multi-mechanism intervention. Therefore, exploring the essence of COPD pathogenesis and discovering effective TCM treatment drugs through the application of TCM principles and prescriptions is a key focus of modern research. Animal models are of paramount importance in medical research. It is the first consideration to select appropriate animals, adopt reasonable modeling methods to replicate stable animal models that closely resemble the clinical manifestations and pathophysiological characteristics of COPD, and use appropriate evaluation methods to determine the success of COPD animal models in experimental research. The core of experimental research lies in observing the intervention effect of TCM on COPD animal models, exploring the specific pathways and regulatory mechanisms of TCM on COPD disease, and finding TCM monomers, single herbs, and TCM formulas with definite curative effects. At present, animal model research on COPD mainly involves model establishment, model evaluation, efficacy observation, mechanism exploration, and other aspects. In recent years, there has been no systematic organization, update, and reflection on the relevant research on TCM intervention in COPD animal models. This study reviewed the selection of animals for the COPD model, methods for establishing COPD animal models, model evaluation methods, and the intervention effects of TCM on COPD animal models. It aims to grasp the current research status and identify existing problems for further improvement, in order to provide evidence and support for scientific research and clinical treatment of COPD.
2.Animal Model of Chronic Obstructive Pulmonary Disease and Intervention Effect of Traditional Chinese Medicine: A Review
Jiyu ZOU ; Lijian PANG ; Tianjiao WANG ; Ningzi ZANG ; Zhongxue ZHAO ; Yongming LIU ; Qi SI ; Tianya CAO ; Xuenan MA ; Ying WANG ; Jiaran WANG ; Xiaodong LYU
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(3):294-303
Chronic obstructive pulmonary disease (COPD), as one of the three major causes of death, is a complex systemic disease with high prevalence, high mortality, high disability, frequent acute exacerbations, and a variety of pulmonary complications. The pathogenesis is complex. Western medicine has no effective specificity scheme for a complete cure. However, multiple-component and multiple-target characteristics of traditional Chinese medicine (TCM) demonstrate significant advantages in COPD treatment through multi-link, multi-pathway, and multi-mechanism intervention. Therefore, exploring the essence of COPD pathogenesis and discovering effective TCM treatment drugs through the application of TCM principles and prescriptions is a key focus of modern research. Animal models are of paramount importance in medical research. It is the first consideration to select appropriate animals, adopt reasonable modeling methods to replicate stable animal models that closely resemble the clinical manifestations and pathophysiological characteristics of COPD, and use appropriate evaluation methods to determine the success of COPD animal models in experimental research. The core of experimental research lies in observing the intervention effect of TCM on COPD animal models, exploring the specific pathways and regulatory mechanisms of TCM on COPD disease, and finding TCM monomers, single herbs, and TCM formulas with definite curative effects. At present, animal model research on COPD mainly involves model establishment, model evaluation, efficacy observation, mechanism exploration, and other aspects. In recent years, there has been no systematic organization, update, and reflection on the relevant research on TCM intervention in COPD animal models. This study reviewed the selection of animals for the COPD model, methods for establishing COPD animal models, model evaluation methods, and the intervention effects of TCM on COPD animal models. It aims to grasp the current research status and identify existing problems for further improvement, in order to provide evidence and support for scientific research and clinical treatment of COPD.
3.Pathogenesis of Chronic Obstructive Pulmonary Disease and Modulating Effect of Traditional Chinese Medicine: A Review
Jiyu ZOU ; Tianjiao WANG ; Ningzi ZANG ; Yongming LIU ; Lijian PANG ; Linlin WANG ; Xiaodong LYU
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(1):287-298
Chronic obstructive pulmonary disease (COPD), as a chronic respiratory disease that can be prevented and intervened but cannot be completely cured, has increasing incidence and mortality rates year by year, often complicated by one or more comorbidities. However, there is currently no specific treatment available. Therefore, the healthcare issues related to COPD are urgent and prominent. Traditional Chinese medicine (TCM) delays the progression of COPD through multiple mechanisms, pathways, and targets. As a result, exploring the pathogenesis of COPD and identifying TCM treatment approaches and effective prescriptions are key issues that urgently need to be addressed in clinical practice. In TCM, COPD is categorized into syndromes such as "cough", "asthma", and "lung distension". It is believed that the deficiency in the origin runs through the entire disease. When external pathogens invade, Qi becomes disordered, and phlegm and blood stasis begin to accumulate, leading to an excess condition in the manifestation. Modern medicine research on the pathogenesis of COPD mainly involves aspects such as inflammatory response, oxidative stress, autophagy imbalance, and aging. Studies have found that Chinese medicine monomers, single herbs, and compound prescriptions can improve COPD by inhibiting inflammation, reducing oxidative damage, correcting autophagy, and delaying aging. However, there is no study that intuitively organizes the various pathogenesis mechanisms of COPD and their interrelationships. At the same time, research on the therapeutic effects of TCM on COPD primarily focuses on exploring a single mechanism or pathway, without integrating multiple mechanisms, pathways, and targets. Additionally, there are very few studies that summarize the corresponding relationships between the various pathogenesis mechanisms of COPD and the regulatory effects and signaling pathways of Chinese medicine. This study, for the first time, combines the latest literature in China and abroad to explain the various pathogenesis mechanisms of COPD and their interrelationships using a combination of graphs, text, and tables. It also outlines the signaling pathways, targets, and mechanisms of Chinese medicine monomers, single herbs, and compound prescriptions in regulating COPD, in order to provide new ideas and strategies for the in-depth research and systematic treatment of COPD with TCM.
4.Exploring Immune Mechanism of Alveolar Epithelial Homeostasis in Idiopathic Pulmonary Fibrosis Based on Principle of "Spleen being in Charge of Defensive Function"
Jie CHEN ; Lijian PANG ; Ningzi ZANG ; Jingyu WANG ; Siyu LI ; Yuanyu LIANG ; XU XINZHU ; Ping LEI ; Xiaodong LYU
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(9):259-264
Idiopathic pulmonary fibrosis (IPF) can be classified as pulmonary collateral disease,and its pathogenesis is mainly characterized by the loss of Qi meridian nourishment,the loss of Yin meridian nourishment,and the formation of blood stasis in the blood vessels. Qi Yin deficiency is the pathological basis that runs through IPF,and obstruction of meridians and collaterals is a key element in the development of the disease. The dysfunction of "spleen being in charge of the defensive function" is closely related to the formation of the pathological pattern of "lung deficiency and collateral stasis" in IPF. The term "spleen being in charge of the defensive function" originated from the Yellow Emperor's Inner Canon. If the spleen is healthy,the Qi will be filled with vitality. Positive energy is stored inside,evil cannot be dried up. Its concept is quite similar to the immune defense function in modern medicine. If the principle of "spleen being in charge of the defensive function" is lost,the key structure and function of the IPF alveolar epithelial barrier may be abnormal,and it can interact with various innate immune cells to promote inflammation and fibrosis processes. Therefore,this article explains the imbalance of immune homeostasis in IPF alveolar epithelium from two aspects:the barrier function of alveolar epithelial cells(AECs) and their interaction with innate immune cells. And based on the theory of "spleen being in charge of the defensive function",using traditional Chinese medicine for strengthening the spleen and nourishing Qi to treat IPF from the perspective of the spleen. This not only strengthens the scientific connotation of "spleen being in charge of the defensive function" in the pathogenesis of IPF,but also provides new research directions and ideas for its future clinical prevention and treatment.
5.Clinical Randomized Controlled Trial of Traditional Chinese Medicine Compound Shenlong Decoction Granules in Treatment of Idiopathic Pulmonary Fibrosis
Qi SI ; Ningzi ZANG ; Mei WANG ; Weidong ZHENG ; Chuang LIU ; Yongming LIU ; Haoyang ZHANG ; Zhongxue ZHAO ; Jiyu ZOU ; Jingze LI ; Lijian PANG ; Xiaodong LYU
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(11):237-245
ObjectiveTo assess the therapeutic effectiveness and safety of the traditional Chinese medicine compound Shenlong decoction in addressing the symptoms of pulmonary deficiency and stasis in patients with idiopathic pulmonary fibrosis (IPF). MethodsSixty eligible patients with lung deficiency and collateral stasis syndrome of IPF were randomly assigned to the observation (30 patients) and control groups (30 patients). All patients underwent standard Western medical therapy. Additionally,the observation group received Shenlong decoction granules,while the control group received a placebo. Both treatments were packaged in four doses of 10.5 g each,taken twice daily for three months. The indexes of the patients during the treatment cycle were observed,and the main indexes include traditional Chinese medicine (TCM) syndrome scores and 6 min walk test (6MWT). The secondary indexes include pulmonary function test [actual value/expected value of total lung volume (TLC%),actual value/expected value of vital capacity(FVC%),actual/predicted diffusing capacity of the lung for carbon monoxide(DLCO%),actual/predicted forced expiratory volume in one second (FEV1%),and FEV1/ forced vital capacity (FVC)],blood gas analysis [arterial blood diathesis partial pressure of oxygen (PaO2),partial pressure of carbon dioxide (PaCO2),and arterial oxygen saturation (SaO2)],serum inflammatory factors [transforming growth factor-β1 (TGF-β1),interleukin-4 (IL-4),interleukin-13 (IL-13),interleukin-12 (IL-12),and gamma-interferon (IFN-γ)],and quality of survival evaluation [St George's Respiratory Questionnaire (SGRQ) score]. The patients' clinical manifestations were determined at the end of the treatment, and the occurrence of adverse events was recorded. ResultsA total of 53 patients completed the study,comprising 27 in the control group and 26 in the observation group. Upon completion of the treatment period,the control group achieved a total effective rate of 33.33% (9/27),whereas the observation group demonstrated a total effective rate of 53.85% (14/26),which was statistically superior to the control group (χ2=4.034,P<0.05). After the treatment,the TCM syndrome scores,6MWT,DLCO%,FEV1%,PaO2,PaCO2,TGF-β1,IL-4,IL-13,IL-12,and IFN-γ in the two groups were all significantly improved (P<0.01). Compared with those in the control group after treatment at the same period,the TCM syndrome scores,6MWT,PaO2,and PaCO2 were significantly improved in the observation group after 60 days and 90 days of medication (P<0.01). Three months after the end of medication,the SGRQ score in the observation group showed significant improvement when compared to that in the control group (P<0.05),and no severe adverse events were reported during the follow-up period. ConclusionCompound Shenlong decoction can alleviate clinical symptoms such as shortness of breath and wheezing in patients with lung deficiency and collateral stasis syndrome of IPF,enhance exercise tolerance,improve the quality of life,and have certain potential advantages in improving pulmonary function.
6.Clinical Randomized Controlled Trial of Traditional Chinese Medicine Compound Shenlong Decoction Granules in Treatment of Idiopathic Pulmonary Fibrosis
Qi SI ; Ningzi ZANG ; Mei WANG ; Weidong ZHENG ; Chuang LIU ; Yongming LIU ; Haoyang ZHANG ; Zhongxue ZHAO ; Jiyu ZOU ; Jingze LI ; Lijian PANG ; Xiaodong LYU
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(11):237-245
ObjectiveTo assess the therapeutic effectiveness and safety of the traditional Chinese medicine compound Shenlong decoction in addressing the symptoms of pulmonary deficiency and stasis in patients with idiopathic pulmonary fibrosis (IPF). MethodsSixty eligible patients with lung deficiency and collateral stasis syndrome of IPF were randomly assigned to the observation (30 patients) and control groups (30 patients). All patients underwent standard Western medical therapy. Additionally,the observation group received Shenlong decoction granules,while the control group received a placebo. Both treatments were packaged in four doses of 10.5 g each,taken twice daily for three months. The indexes of the patients during the treatment cycle were observed,and the main indexes include traditional Chinese medicine (TCM) syndrome scores and 6 min walk test (6MWT). The secondary indexes include pulmonary function test [actual value/expected value of total lung volume (TLC%),actual value/expected value of vital capacity(FVC%),actual/predicted diffusing capacity of the lung for carbon monoxide(DLCO%),actual/predicted forced expiratory volume in one second (FEV1%),and FEV1/ forced vital capacity (FVC)],blood gas analysis [arterial blood diathesis partial pressure of oxygen (PaO2),partial pressure of carbon dioxide (PaCO2),and arterial oxygen saturation (SaO2)],serum inflammatory factors [transforming growth factor-β1 (TGF-β1),interleukin-4 (IL-4),interleukin-13 (IL-13),interleukin-12 (IL-12),and gamma-interferon (IFN-γ)],and quality of survival evaluation [St George's Respiratory Questionnaire (SGRQ) score]. The patients' clinical manifestations were determined at the end of the treatment, and the occurrence of adverse events was recorded. ResultsA total of 53 patients completed the study,comprising 27 in the control group and 26 in the observation group. Upon completion of the treatment period,the control group achieved a total effective rate of 33.33% (9/27),whereas the observation group demonstrated a total effective rate of 53.85% (14/26),which was statistically superior to the control group (χ2=4.034,P<0.05). After the treatment,the TCM syndrome scores,6MWT,DLCO%,FEV1%,PaO2,PaCO2,TGF-β1,IL-4,IL-13,IL-12,and IFN-γ in the two groups were all significantly improved (P<0.01). Compared with those in the control group after treatment at the same period,the TCM syndrome scores,6MWT,PaO2,and PaCO2 were significantly improved in the observation group after 60 days and 90 days of medication (P<0.01). Three months after the end of medication,the SGRQ score in the observation group showed significant improvement when compared to that in the control group (P<0.05),and no severe adverse events were reported during the follow-up period. ConclusionCompound Shenlong decoction can alleviate clinical symptoms such as shortness of breath and wheezing in patients with lung deficiency and collateral stasis syndrome of IPF,enhance exercise tolerance,improve the quality of life,and have certain potential advantages in improving pulmonary function.
7.Global burden and trends of gout incidence and prevalence.
Shuai JIN ; Yuhan WANG ; Shuangtong YAN ; Xiaomin FU ; Xiaodong HU ; Zhaohui LYU ; Hongzhou LIU
Chinese Medical Journal 2025;138(23):3153-3162
BACKGROUND:
Gout is a chronic disease primarily caused by elevated urate levels, severely affecting joint health. Its global distribution varies, and updated data for China are lacking. This study aimed to analyze the current burden and trends of gout globally and in China, examining the burden by gender, age, and risk factors while providing future predictions.
METHODS:
This descriptive epidemiological secondary analysis utilized data from the Global Burden of Disease, Injuries, and Risk Factors (GBD) 2021 study. Age-standardized incidence rate (ASIR), prevalence rate (ASPR), and disability-adjusted life years (DALYs) rates (ASDR) were used to assess the gout burden. Trends from 1990 to 2021 were analyzed across global regions, genders, and sociodemographic index (SDI) levels. The burden in China was further examined by gender, age, and associated risk factors. The Bayesian age-period-cohort (BAPC) model was used to predict future trends. Gout burden in China and the United States was compared.
RESULTS:
In 2021, gout affected 57 million people globally, with 9.4 million new cases and 1.75 million DALYs. From 1990 to 2021, the ASIR, ASPR, and ASDR increased by 17.2%, 21.9%, and 21.3%, respectively. Males experienced a significantly higher burden, with greater ASIR, ASPR, and ASDR increasing with higher SDI levels. In China, male ASIR, ASPR, and ASDR were over 2.8 times those of females, and the burden increased with age. In 2021, 31.4% of gout-related DALYs in China were attributed to high body mass index and 7.6% to kidney dysfunction. Between 1990 and 2021, the high body mass index-related burden of gout rose annually for both genders, while the kidney dysfunction-related gout burden remained stable. By 2050, the burden of gout in China is expected to continue increasing, with a slower rise in females and a decline in males after an initial increase. However, the overall burden will remain substantial. In comparison, the gout burden will be higher in the United States than in China.
CONCLUSIONS
Gout is becoming a significant health burden globally and in China, particularly among Chinese males and older individuals. With the aging population and lifestyle changes exacerbating the issue, effective strategies and measures are essential to prevent or reduce gout-related health issues.
Humans
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Gout/epidemiology*
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Male
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Female
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Incidence
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Middle Aged
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Prevalence
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China/epidemiology*
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Adult
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Risk Factors
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Aged
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Global Burden of Disease
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Disability-Adjusted Life Years
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Young Adult
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Adolescent
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Quality-Adjusted Life Years
8.The Chinese guideline for management of snakebites
Lai RONGDE ; Yan SHIJIAO ; Wang SHIJUN ; Yang SHUQING ; Yan ZHANGREN ; Lan PIN ; Wang YONGGAO ; Li QI ; Wang JINLONG ; Wang WEI ; Ma YUEFENG ; Liang ZIJING ; Zhang JIANFENG ; Zhou NING ; Han XIAOTONG ; Zhang XINCHAO ; Zhang MAO ; Zhao XIAODONG ; Zhang GUOQIANG ; Zhu HUADONG ; Yu XUEZHONG ; Lyu CHUANZHU
World Journal of Emergency Medicine 2024;15(5):333-355
In 2009,the World Health Organization included snakebite on the list of neglected tropical diseases,acknowledging it as a common occupational hazard for farmers,plantation workers,and others,causing tens of thousands of deaths and chronic physical disabilities every year.This guideline aims to provide practical information to help clinical professionals evaluate and treat snakebite victims.These recommendations are based on clinical experience and clinical research evidence.This guideline focuses on the following topics:snake venom,clinical manifestations,auxiliary examination,diagnosis,treatments,and prevention.
9.Genomic Bioinformatics Analysis on Different Diseases with the Same Syndrome for Pulmonary Related Comorbidities in Idiopathic Pulmonary Fibrosis
Yongming LIU ; Xiaodong LYU ; Lijian PANG ; Ningzi ZANG ; Yuanyu LIANG ; Jingyu WANG ; Jiaran WANG ; Jiyu ZOU ; Ye SHENG
Chinese Journal of Information on Traditional Chinese Medicine 2024;31(12):20-26
Objective To explore the biological basis of different diseases with the same syndrome for pulmonary related comorbidities(pulmonary hypertension,obstructive sleep apnea syndrome,chronic obstructive pulmonary disease,lung cancer)in idiopathic pulmonary fibrosis(IPF)through genomic bioinformatics analysis.Methods GSE110147,GSE113439,GSE135917,GSE106986 and GSE118370 datasets were downloaded as research subjects.The differential genes between each disease group and the control group were screened.Cytoscape 3.10.0 software was used for topology analysis to screen core genes.OmicShare was used to perform GO and KEGG pathway enrichment analyses on core genes.Results A total of 23 core genes related to IPF was obtained.GO enrichment analysis showed that core genes were mainly enriched in biological processes such as cellular process,metabolic process,biological regulation/biological process,developmental process,localization,response to stimulus,immune system process and signaling;in cellular components such as cellular anatomical entity and protein-containing complex;in molecular functions such as binding,catalytic activity,structural molecule activity,molecular adaptor activity,molecular function regulator and transcription regulator activity.KEGG pathway enrichment analysis showed that core genes were mainly enriched in ribosome biogenesis in eukaryotes,AGE-RAGE signaling pathway in diabetic complications,Th17 cell differentiation,JAK-STAT signaling pathway,RNA polymerase,neutrophil extracellular trap formation.Conclusion Using genomic bioinformatics analysis to explore the core genes and signaling pathways of pulmonary related comorbidities in IPF can reveal the mechanism of different diseases with the same syndrome for pulmonary related comorbidities in IPF to a certain extent.
10.Establishment of a new classification system for distal clavicle fracture and its clinical efficiency evaluation
Cheng XUE ; Xingguo ZHENG ; Xiang LI ; Lijun SONG ; Xiaodong QIN ; Tianrun LYU ; Qun CHEN ; Kaixiao XUE ; Jiahu FANG
Chinese Journal of Trauma 2024;40(6):539-546
Objective:To establish a new classification system for distal clavicle fracture and evaluate its clinical effectiveness.Methods:A retrospective case series study was conducted to analyze the clinical data of 101 patients with distal clavicle fracture admitted to First Affiliated Hospital of Nanjing Medical University from January 2015 to March 2022, including 57 males and 44 females, aged 19-86 years [(53.8±14.0)years]. Before treatment, patients were routinely subjected to bilateral anteroposterior radiography of the shoulder joints to measure the length of the fractured fragments, coracoclavicular distance, and acromioclavicular distance. According to the correlation between the location of the fracture line and the insertion of the coracoclavicular ligament, distal clavicle fracture was divided into three types: type I, with the fracture line lateral to the coracoclavicular ligament region; type II, with the fracture line in the coracoclavicular ligament region; type III, with the fracture line medial to the coracoclavicular ligament region. According to the injury severity of the coracoclavicular ligament and acromioclavicular ligament, type I was further subdivided into type IA, IB, IC and ID, and type II fracture was further subdivided into type IIA, IIB, IIC, IID and IIE. All the 101 patients were classified and randomly reclassified at an interval of 3 months by 10 senior and 10 junior shoulder surgeons according to the new classification method. Kappa coefficients were used to evaluate the inter- and intra-observer consistency of the new classification. Fifty-two patients with stable fracture (types IA, IB, IIC, and IID) were treated non-surgically, while 49 patients with unstable fracture (types IC, ID, IIA, IIB, IIE, and III) were treated surgically, including 26 patients with anatomic coracoclavicular ligament reconstruction, 9 with locking plate fixation, 8 with clavicle hook plate fixation, 4 with anatomic coracoclavicular ligament reconstruction combined with locking plate fixation, and 2 with anatomic coracoclavicular ligament reconstruction combined with tension screw fixation. The patients were assessed using the visual analogue scale (VAS) and Constant-Murley shoulder score before treatment and at 3, 6, 12, and 18 months after treatment. The coracoclavicular distance and acromioclavicular distance on the anteroposterior radiographs of the healthy and affected shoulder joints were measured at 3, 6, 12, and 18 months after treatment, and fracture healing time and complications were observed.Results:The length of the fractured fragments was 12.9 (9.7, 17.6)mm in patients with type I fracture, 24.7 (21.8, 27.8)mm in patients with type II fracture, and 43.6 (41.2, 46.9)mm in patients with type III fracture ( P<0.01). There were no significant differences in the coracoclavicular distance and acromioclavicular distance of the affected and healthy shoulders among the patients with types IA, IB, IIC, IID, and III fracture ( P>0.05); For the patients with types IC, IIA, IIB and IIE fracture, the coracoclavicular distance of the affected shoulder was significantly increased compared with that of the healthy shoulder ( P<0.01), while there was no significant difference in the acromioclavicular distance of the affected and healthy shoulders ( P>0.05). Both of the inter- and intra-observer consistency of the new classification was good. The inter- and intra-observer Kappa values were 0.69 and 0.71 respectively among the senior shoulder surgeons, and 0.61 and 0.64 respectively among the junior shoulder surgeons. All the patients were followed up for 18-104 months [28(23, 32)months]. At 3, 6, 12 and 18 months after treatment, the VAS scores of non-surgical patients were 3(2, 3)points, 2(1, 2)points, 1(0, 1)points and 0(0, 1)points respectively, significantly decreased compared with 6(5, 6)points before treatment ( P<0.01); the VAS scores of surgical patients were 3(2, 3)points, 2(1, 2)points, 1(1, 1)points and 0(0, 1)points respectively, significantly decreased compared with 6(5, 7)points before treatment ( P<0.01); the Constant-Murley shoulder scores of non-surgical patients were (76.6±5.3)points, (84.3±5.0)points, (88.4±4.0)points and (91.9±3.8)points respectively, significantly higher than (42.7±5.2)points before treatment ( P<0.01); the Constant-Murley shoulder scores of surgical patients were (77.4±4.6)points, (84.4±4.7)points, (87.6±3.7)points and (91.7±4.0)points respectively, significantly higher than (42.8±5.3)points before treatment ( P<0.01). At 3, 6, 12 and 18 months after treatment, the coracoclavicular distance of the affected shoulder in non-surgical patients was not significantly different from that before treatment ( P>0.05), while the acromioclavicular distance of the affected shoulder in surgical patients was significantly reduced compared with that before treatment ( P<0.01). There were no significant differences in the coracoclavicular distance of the healthy shoulder or bilateral acromioclavicular distance in non-surgical and surgical patients at 3, 6, 12, and 18 months after treatment compared with those before treatment ( P>0.05). Fractures were healed within 12 months after treatment in all the patients, without dislocation or subluxation of the acromioclavicular joint, internal fixation failure or internal fixator breakage. Eight patients treated with clavicular hook plate fixation had shoulder pain associated with limited mobility after operation, and all underwent a second operation to remove the clavicular hook plate at 12 months after operation. Conclusions:The new classification system for distal clavicle fracture is established, which comprehensively considers the position of the fracture line, injury of the coracoclavicular and acromioclavicular ligaments, and fracture stability. The new classification system exhibits good inter- and intra- observer consistency, and the effectiveness of its preliminary clinical application is satisfactory.

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