1.Effect of electroacupuncture on intestinal function after gastric cancer surgery.
Junjie GUAN ; Miaomiao GE ; Yuling CAI ; Ting WANG ; Zhiwei JIANG ; Jianhua SUN ; Gang WANG
Chinese Acupuncture & Moxibustion 2025;45(6):751-756
OBJECTIVE:
To observe the effect of electroacupuncture combined with enhanced recovery after surgery (ERAS) protocol on promoting intestinal function in patients after gastric cancer surgery.
METHODS:
Forty-four patients who underwent radical gastrectomy for gastric cancer were randomly divided into an experimental group (22 cases, 3 cases were excluded) and a control group (22 cases, 4 cases were excluded). Both groups received treatment under ERAS protocol, the experimental group was given electroacupuncture at bilateral Neiguan (PC6), Hegu (LI4), Zusanli (ST36) and Quchi (LI11), disperse-dense wave was selected, with frequency of 2 Hz/100 Hz. The control group received placebo electroacupuncture intervention, with the same acupoints as the experimental group, electrode pads were placed on the acupoints without electrical stimulation. Each session lasted 30 min, starting from 1 h after surgery, once every 24 h, until the patient resumed anal flatus. The intestinal sound rate of both groups was observed 24 h before surgery and 24, 48 h after surgery. The bowel sound recovery time (BSRT), time to first anal flatus, time to first defecation, and tolerance to oral enteral nutrition suspension were compared between the two groups. The levels of serum C-reactive protein (CRP), interleukin (IL)-2, IL-4, IL-6, IL-10, IL-12, IL-17, tumor necrosis factor-α (TNF-α) and interferon-γ (IFN-γ) were measured 24 h before surgery and 24 h after surgery in both groups.
RESULTS:
The intestinal sound rate 24 h after surgery was decreased compared with that 24 h before surgery in the two groups (P<0.05), the intestinal sound rate 24, 48 h after surgery in the experimental group was higher than that in the control group (P<0.05). The BSRT in the experimental group was earlier than that in the control group (P<0.05) .The levels of serum CRP, IL-6, IL-10 24 h after surgery in the experimental group were higher than those 24 h before surgery (P<0.05), while the levels of serum CRP, IL-4, IL-6, IL-10, IFN-γ in the control group were higher than those 24 h before surgery (P<0.05); the levels of serum CRP、IL-4、IFN-γ 24 h after surgery in the experimental group were lower than those in the control group (P<0.05) .The tolerance rate of oral enteral nutrition suspension in the experimental group was 84.2% (16/19), which was higher than 50.0% (9/18) in the control group (P<0.05).
CONCLUSION
Electroacupuncture combined with ERAS protocol can improve the intestinal motility, shorten the BSRT, enhance the tolerance of oral intake, and reduce inflammatory response in patients after gastric cancer surgery.
Adult
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Aged
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Female
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Humans
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Male
;
Middle Aged
;
Acupuncture Points
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C-Reactive Protein/metabolism*
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Electroacupuncture
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Gastrectomy
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Interleukin-10
;
Interleukin-6
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Intestines/physiopathology*
;
Stomach Neoplasms/therapy*
2.Correlation between cortical thickness and pathological deposition ofβ-amyloid in patients with Alzheimer disease
Lyuming ZHU ; Junwen HOU ; Zhimin ZHONG ; Jingjie GE ; Yue WU ; Shengwen CHEN ; Jianhua LUO ; Yunhao YANG ; Jing WANG ; Huamei LIN ; Chuantao ZUO ; Yihui GUAN
Chinese Journal of Medical Imaging Technology 2025;41(2):207-211
Objective To observe the correlation between cortical thickness and pathological deposition of β-amyloid(Aβ)in patients with Alzheimer disease(AD)induced mild cognitive impairment(MCI)or dementia.Methods Totally 22 AD patients were prospectively enrolled and divided into dementia group(n=12)and MCI group(n=10)based on the degree of cognitive impairment,while 17 healthy individuals without cognitive impairment were recruited as control group.MR examination and 18F-florbutaben(18F-FBB)PET imaging were performed,the cortical thickness and Aβ deposition value(Centiloid[CL]value)were calculated and compared among 3 groups and between each 2 groups,then the correlation between the above two indexes was analyzed.Results The cortical thickness in dementia group,MCI group and control group was(2.18±0.14),(2.35±0.08)and(2.36±0.09)mm,respectively,with significant difference among 3 groups(P<0.05).The cortical thickness in dementia group was significantly thinner than that in MCI group and control group(both P<0.05).CL value in dementia group,MCI group and control group was 77.97(63.07,95.55),65.51(54.54,90.50)and-1.17(-9.66,4.88),respectively,with significant difference among 3 groups(P<0.05).CL value in dementia group and MCI group were significantly higher than in control group(both P<0.05).The cortical thickness was moderately negatively correlated with CL value in MCI group(r=-0.580,P=0.048)but not in the other 2 groups(both P>0.05).Conclusion The cortical thickness was moderately negatively correlated with abnormal deposition of Aβ in patients with AD induced MCI,but was not during dementia.
3.Guideline for Adult Weight Management in China
Weiqing WANG ; Qin WAN ; Jianhua MA ; Guang WANG ; Yufan WANG ; Guixia WANG ; Yongquan SHI ; Tingjun YE ; Xiaoguang SHI ; Jian KUANG ; Bo FENG ; Xiuyan FENG ; Guang NING ; Yiming MU ; Hongyu KUANG ; Xiaoping XING ; Chunli PIAO ; Xingbo CHENG ; Zhifeng CHENG ; Yufang BI ; Yan BI ; Wenshan LYU ; Dalong ZHU ; Cuiyan ZHU ; Wei ZHU ; Fei HUA ; Fei XIANG ; Shuang YAN ; Zilin SUN ; Yadong SUN ; Liqin SUN ; Luying SUN ; Li YAN ; Yanbing LI ; Hong LI ; Shu LI ; Ling LI ; Yiming LI ; Chenzhong LI ; Hua YANG ; Jinkui YANG ; Ling YANG ; Ying YANG ; Tao YANG ; Xiao YANG ; Xinhua XIAO ; Dan WU ; Jinsong KUANG ; Lanjie HE ; Wei GU ; Jie SHEN ; Yongfeng SONG ; Qiao ZHANG ; Hong ZHANG ; Yuwei ZHANG ; Junqing ZHANG ; Xianfeng ZHANG ; Miao ZHANG ; Yifei ZHANG ; Yingli LU ; Hong CHEN ; Li CHEN ; Bing CHEN ; Shihong CHEN ; Guiyan CHEN ; Haibing CHEN ; Lei CHEN ; Yanyan CHEN ; Genben CHEN ; Yikun ZHOU ; Xianghai ZHOU ; Qiang ZHOU ; Jiaqiang ZHOU ; Hongting ZHENG ; Zhongyan SHAN ; Jiajun ZHAO ; Dong ZHAO ; Ji HU ; Jiang HU ; Xinguo HOU ; Bimin SHI ; Tianpei HONG ; Mingxia YUAN ; Weibo XIA ; Xuejiang GU ; Yong XU ; Shuguang PANG ; Tianshu GAO ; Zuhua GAO ; Xiaohui GUO ; Hongyi CAO ; Mingfeng CAO ; Xiaopei CAO ; Jing MA ; Bin LU ; Zhen LIANG ; Jun LIANG ; Min LONG ; Yongde PENG ; Jin LU ; Hongyun LU ; Yan LU ; Chunping ZENG ; Binhong WEN ; Xueyong LOU ; Qingbo GUAN ; Lin LIAO ; Xin LIAO ; Ping XIONG ; Yaoming XUE
Chinese Journal of Endocrinology and Metabolism 2025;41(11):891-907
Body weight abnormalities, including overweight, obesity, and underweight, have become a dual public health challenge in Chinese adults: overweight and obesity lead to a variety of chronic complications, while underweight increases the risks of malnutrition, sarcopenia, and organ dysfunction. To systematically address these issues, multidisciplinary experts in endocrinology, sports science, nutrition, and psychiatry from various regions have held multiple weight management seminars. Based on the latest epidemiological data and clinical evidence, they expanded the guideline to include assessment and intervention strategies for underweight, in addition to the core content of obesity management. This guideline outlines the etiological mechanisms, evaluation methods, and multidimensional management strategies for overweight and obesity, covering key areas such as diagnosis and assessment, medical nutrition therapy, exercise prescription, pharmacological intervention, and psychological support. It is intended to provide a scientific and standardized approach to weight management across the adult population, aiming to curb the rising prevalence of obesity, mitigate complications associated with abnormal body weight, and improve nutritional status and overall quality of life.
4.Correlation between cortical thickness and pathological deposition ofβ-amyloid in patients with Alzheimer disease
Lyuming ZHU ; Junwen HOU ; Zhimin ZHONG ; Jingjie GE ; Yue WU ; Shengwen CHEN ; Jianhua LUO ; Yunhao YANG ; Jing WANG ; Huamei LIN ; Chuantao ZUO ; Yihui GUAN
Chinese Journal of Medical Imaging Technology 2025;41(2):207-211
Objective To observe the correlation between cortical thickness and pathological deposition of β-amyloid(Aβ)in patients with Alzheimer disease(AD)induced mild cognitive impairment(MCI)or dementia.Methods Totally 22 AD patients were prospectively enrolled and divided into dementia group(n=12)and MCI group(n=10)based on the degree of cognitive impairment,while 17 healthy individuals without cognitive impairment were recruited as control group.MR examination and 18F-florbutaben(18F-FBB)PET imaging were performed,the cortical thickness and Aβ deposition value(Centiloid[CL]value)were calculated and compared among 3 groups and between each 2 groups,then the correlation between the above two indexes was analyzed.Results The cortical thickness in dementia group,MCI group and control group was(2.18±0.14),(2.35±0.08)and(2.36±0.09)mm,respectively,with significant difference among 3 groups(P<0.05).The cortical thickness in dementia group was significantly thinner than that in MCI group and control group(both P<0.05).CL value in dementia group,MCI group and control group was 77.97(63.07,95.55),65.51(54.54,90.50)and-1.17(-9.66,4.88),respectively,with significant difference among 3 groups(P<0.05).CL value in dementia group and MCI group were significantly higher than in control group(both P<0.05).The cortical thickness was moderately negatively correlated with CL value in MCI group(r=-0.580,P=0.048)but not in the other 2 groups(both P>0.05).Conclusion The cortical thickness was moderately negatively correlated with abnormal deposition of Aβ in patients with AD induced MCI,but was not during dementia.
5.Guideline for Adult Weight Management in China
Weiqing WANG ; Qin WAN ; Jianhua MA ; Guang WANG ; Yufan WANG ; Guixia WANG ; Yongquan SHI ; Tingjun YE ; Xiaoguang SHI ; Jian KUANG ; Bo FENG ; Xiuyan FENG ; Guang NING ; Yiming MU ; Hongyu KUANG ; Xiaoping XING ; Chunli PIAO ; Xingbo CHENG ; Zhifeng CHENG ; Yufang BI ; Yan BI ; Wenshan LYU ; Dalong ZHU ; Cuiyan ZHU ; Wei ZHU ; Fei HUA ; Fei XIANG ; Shuang YAN ; Zilin SUN ; Yadong SUN ; Liqin SUN ; Luying SUN ; Li YAN ; Yanbing LI ; Hong LI ; Shu LI ; Ling LI ; Yiming LI ; Chenzhong LI ; Hua YANG ; Jinkui YANG ; Ling YANG ; Ying YANG ; Tao YANG ; Xiao YANG ; Xinhua XIAO ; Dan WU ; Jinsong KUANG ; Lanjie HE ; Wei GU ; Jie SHEN ; Yongfeng SONG ; Qiao ZHANG ; Hong ZHANG ; Yuwei ZHANG ; Junqing ZHANG ; Xianfeng ZHANG ; Miao ZHANG ; Yifei ZHANG ; Yingli LU ; Hong CHEN ; Li CHEN ; Bing CHEN ; Shihong CHEN ; Guiyan CHEN ; Haibing CHEN ; Lei CHEN ; Yanyan CHEN ; Genben CHEN ; Yikun ZHOU ; Xianghai ZHOU ; Qiang ZHOU ; Jiaqiang ZHOU ; Hongting ZHENG ; Zhongyan SHAN ; Jiajun ZHAO ; Dong ZHAO ; Ji HU ; Jiang HU ; Xinguo HOU ; Bimin SHI ; Tianpei HONG ; Mingxia YUAN ; Weibo XIA ; Xuejiang GU ; Yong XU ; Shuguang PANG ; Tianshu GAO ; Zuhua GAO ; Xiaohui GUO ; Hongyi CAO ; Mingfeng CAO ; Xiaopei CAO ; Jing MA ; Bin LU ; Zhen LIANG ; Jun LIANG ; Min LONG ; Yongde PENG ; Jin LU ; Hongyun LU ; Yan LU ; Chunping ZENG ; Binhong WEN ; Xueyong LOU ; Qingbo GUAN ; Lin LIAO ; Xin LIAO ; Ping XIONG ; Yaoming XUE
Chinese Journal of Endocrinology and Metabolism 2025;41(11):891-907
Body weight abnormalities, including overweight, obesity, and underweight, have become a dual public health challenge in Chinese adults: overweight and obesity lead to a variety of chronic complications, while underweight increases the risks of malnutrition, sarcopenia, and organ dysfunction. To systematically address these issues, multidisciplinary experts in endocrinology, sports science, nutrition, and psychiatry from various regions have held multiple weight management seminars. Based on the latest epidemiological data and clinical evidence, they expanded the guideline to include assessment and intervention strategies for underweight, in addition to the core content of obesity management. This guideline outlines the etiological mechanisms, evaluation methods, and multidimensional management strategies for overweight and obesity, covering key areas such as diagnosis and assessment, medical nutrition therapy, exercise prescription, pharmacological intervention, and psychological support. It is intended to provide a scientific and standardized approach to weight management across the adult population, aiming to curb the rising prevalence of obesity, mitigate complications associated with abnormal body weight, and improve nutritional status and overall quality of life.
6.Effects of Gujin Xiaoji Mixture combined with warming needle therapy on the clinical efficacy and immune function of patients with qi and yin deficiency syndrome of advanced non-small cell lung cancer
Shuang HE ; Jianhua ZANG ; Lin LONG ; Lili ZHAO ; Jin TIAN ; Chengcheng GUAN ; Jun XIAO
International Journal of Traditional Chinese Medicine 2024;46(11):1426-1432
Objective:To investigate the effects of self-made Gujin Xiaoji Mixture combined with warming needle therapy on the clinical efficacy and immune function of patients with advanced non-small cell lung cancer (NSCLC) with qi and yin deficiency syndrome.Methods:This experiment was a randomized controlled trial study. 180 patients with advanced NSCLC qi and yin deficiency syndrome in the oncology centre of Qingdao Hospital of Traditional Chinese Medicine were selected as the observation subjects from March 2021 to August 2022, and were divided into 2 groups using the random number table method, with 90 cases in each group. The control group received conventional chemotherapy combined with Sintilimab injection, 21 days as a cycle, with a total of 4 cycles of treatment; and the observation group received Gujin Xiaoji Mixture combined with warming needle therapy based on the control group, 7 days as one course of treatment, with a total of 12 courses. Both groups were followed up for 12 months. The TCM syndrome scores were performed before and after treatment. The functional assessment of cancer therapy-lung (FACT-L) was used to evaluate the quality of life of patients; flow cytometry was used to detect the levels of CD3 +, CD4 +, CD8 + and NK cell, and the CD4 +/CD8 + ratio was calculated; adverse drug reactions and progression free survival of patients during treatment were observed and recorded, the efficacy of TCM syndrome and objective efficacy of solid tumors were evaluated. Results:After treatment, the observation group's post-treatment TCM syndrome score (5.67±1.99 vs. 7.12±2.31, t=-4.53) was lower than that of the control group ( P<0.001); mobility (23.03±2.80 vs. 20.69±2.46, t=5.96), daily living (23.06±2.56 vs. 20.71± 2.33, t=6.42), emotional status (18.44±2.32 vs. 16.12±2.71, t=6.18), and other factors (33.14±4.11 vs. 27.39±4.64, t=8.81) and total score (97.68±7.23 vs. 84.91±7.49, t=11.64) were higher than those in the control group ( P<0.01). In the observation group, after treatment, the levels of CD3 + [(65.14±6.06)% vs. (59.84±5.74)%, t=6.02], CD4 + [(40.09±4.09)% vs. (35.69±3.86)%, t=7.43], NK cell [(29.11±4.81)% vs. (22.38±4.51)%, t=9.68] and CD4 +/CD8 + [(1.52±0.27) vs. (1.14±0.12), t=12.63] were higher than those in the control group ( P<0.01), and CD8 + [(26.82±3.79)% vs. (31.76±4.65)%, t=-7.81] level was lower than that of the control group ( P<0.01). After treatment, the objective remission rate in the observation group was 7.8% (7/90), and the disease control rate was 87.8% (79/90), while the objective remission rate after treatment in the control group was 5.5% (5/90), and the disease control rate was 82.2% (74/90), and there were no statistical significance in the comparison of objective remission rate and disease control rate of the 2 groups ( χ2=0.09, 0.70, P=0.765, 0.407). The total effective rate after treatment was 62.2% (56/90) in the observation group and 34.4% (31/90) in the control group, and the difference between the 2 groups was statistically significant ( Z=-3.89, P<0.001). WBC [(4.27±1.12)×10 9/L vs. (3.84±1.11)×10 9/L, t=2.58] and haemoglobin [(119.93±17.25)g/L vs. (109.76±15.61)g/L, t=4.15] levels of the observation group were higher than those in the control group after treatment ( P<0.01). During follow-up, the median progression-free survival was 6.2 months in the observation group and 5.5 months in the control group patients, and the difference between the 2 groups was not statistically different ( t=0.11, P>0.05). Conclusion:The combination of Gujin Xiaoji Mixture with warming needle therapy can effectively improve the clinical symptoms of patients with advanced NSCLC with deficiency of qi and yin syndrome, improve the immunity and clinical efficacy of patients, alleviate the adverse effects of drugs, and prolong the progression-free survival period.
7. Research progress on pathogenesis and potential therapeutic target of sarcopenia obesity
Yixun GUO ; Yingda WEI ; Yan ZHANG ; Xiaoyin GUAN ; Bo WANG ; Yan ZHANG ; Jianhua LIN
Chinese Journal of Clinical Pharmacology and Therapeutics 2023;28(3):341-346
Sarcopenia obesity (SO), a specific disease with co-occurrence of obesity and sarcopenia, is shown clinically as abnormal accumulation of fat, decreased mass and strength of muscle, and increased risk of incidence and mortality of other chronic diseases. Currently, there exist various definitions and diagnoses about SO in the various regions of the world. Its prevalence in populations elevates in an age-dependent manner. This article summarized the possible pathogenesis of SO from the view of chronic inflammation, oxidative stress, insulin resistance, and Hippo pathway, subsequently listed and analyzed potential pharmacological targets (fibroblast growth factor, CD44, adiponectin, etc) involved in treating SO, in order to provide new ideas for clinical diagnosis, treatment of SO patients and research and development of innovative drugs.
8.Study on the Effect and Mechanism of Huanglian Jiedu Decoction in Improving Itching Symptoms in 1-chloro-2,4-dinitrobenzene-Induced Atopic Dermatitis Mice
Zengyan ZHANG ; Huiyuan ZHANG ; Jianhua GUAN ; Yunlong CHEN
Traditional Chinese Drug Research & Clinical Pharmacology 2023;34(12):1713-1720
Objective To investigate the effect and mechanism of Huanglian Jiedu Decoction in improving the itching symptoms of 1-chloro-2,4-dinitrobenzene(DNCB)-induced atopic dermatitis(AD)in mice.Methods Thirty-six Balb/c mice were randomly divided into normal group,model group,Dexamethasone(positive control,2.5 mg·kg-1)group and Huanglian Jiedu Decoction low-,medium-and high-dose groups(0.4,0.8 and 1.6 g·kg-1),6 mice in each group.After shaving the back of the mice,200 μL of DNCB solution was applied to the back of the mice for sensitisation(1%DNCB for 3 consecutive days)and excitation(1.5%DNCB,starting from the fourteenth day,excitation was performed once every 3 days for a total of 5 times).The stimulation and drug interventions were carried out simultaneously,and each group was administered by gavage at a set dose once daily for 14 days.The severity score of the skin lesions was calculated with reference to the Scoring Atopic Dermatitis(SCORAD),and the number of times the mice scratched within 20 minutes was recorded.The pathological changes of the lesions were observed by HE staining;mast cell infiltration was observed by toluidine blue staining;and the mRNA expression levels of thymic stromal lymphopoietin(TSLP),interleukin(IL)13,histamine H4 receptor(HRH4),and IL-31 in the lesions were detected by RT-qPCR.Results Compared with the normal group,the dorsal skin of the mice in the model group showed obvious erythema,mossification,crusting and epidermal shedding after DNCB excitation,and the severity score of the lesions was significantly increased(P<0.001);the hyperkeratosis of epidermis,the thickness of spinous layer was significantly increased(P<0.001),sponge oedema,and a large number of inflammatory cells infiltration was seen in the dermis;and the number of mast cells was significantly increased(P<0.001);the times of scratches within 20 minutes was significantly increased(P<0.01);and the mRNA expression levels of TSLP,IL-13,HRH4,and IL-31 in the skin lesion tissue were all significantly elevated(P<0.05,P<0.01).Compared with the model group,the skin lesions on the backs of mice in the low-,medium-and high-dose groups of Huanglian Jiedu Decoction were significantly improved,the mossy area was significantly reduced,the severity was significantly reduced,and the severity score of skin lesions was significantly reduced(P<0.001),and the number of mast cells and the mRNA expression levels of IL-13,HRH4,and IL-31 were significantly reduced in the skin lesion tissues(P<0.05,P<0.01,P<0.001);the thickness of the stratum spinosum was significantly reduced in the medium-and high-dose groups of Huanglian Jiedu Decoction(P<0.001),and the number of inflammatory cells in the dermis was significantly reduced;the number of scratching in mice in the high-dose group of Huanglian Jiedu Decoction was significantly reduced within 20 minutes(P<0.01),and the mRNA expression level of TSLP in the lesion tissue was significantly reduced(P<0.05).Conclusion Huanglian Jiedu Decoction can alleviate itching symptoms in AD mice,and its mechanism of action may be related to repairing the skin barrier in AD mice,attenuating the infiltration of inflammatory cells and mast cells,and down-regulating the mRNA expressions of itch-associated factors TSLP,IL-13,IL-31 and HRH4 in skin tissues.
9.Relationship between GNRI and perioperative rehabilitation of elderly patients with gastric cancer
Hanhan Wu ; Jianhua Jiang ; Jing Cheng ; Yunshan Fan ; Lili Hou ; Shixia Guan ; Le Yang ; Shuang Zu ; Huixian Li ; Bao Zhang ; Anla Hu
Acta Universitatis Medicinalis Anhui 2022;57(11):1816-1820
Objective :
To explore the relationship between geriatric nutritional risk index( GNRI) and perioperative nutritional status,postoperative recovery and complications in elderly patients with gastric cancer.
Methods :
In this retrospective study,212 elderly patients ( aged ≥60 years ) with gastric cancer who underwent gastrectomy were recruited.GNRI was used to retrospectively assess the patients' preoperative nutritional status ,and analyze the relationship between GNRI and perioperative nutritional status,postoperative recovery and complications.The ROC curve was applied to explore the value of GNRI in predicting postoperative complications.
Results :
The inci- dence of preoperative nutritional risk in elderly patients undergoing gastric cancer surgery was 45. 07%.Compared with the patients whose GNRI>98 points,the patients whose GNRI≤98 points had different degrees of decrease in serum total protein,albumin,prealbumin,hemoglobin and lymphocyte counts before surgery,day 1 and day 5-8 after surgery (P <0. 05) .The patients whose GNRI <92 points had longer postoperative hospital stay than those with GNRI>98 points (P<0. 05) .With the decrease of GNRI scores,the incidence of complications showed an upward trend(P<0. 001) .The multivariate analysis of the relationship between GNRI and postoperative complica- tions showed that TNM staging of III -IV and GNRI <92 points were independent risk factors for complications. GNRI had a good predictive value for the occurrence of complications (AUC = 0. 639,95% CI : 0. 570-0. 703,P = 0. 001,Cut-off value : 92. 21) .
Conclusion
GNRI can be used for preoperative nutritional assessment for eld- erly gastric cancer patients.Patients with GNRI<92. 21 points should be actively given nutritional therapy to im- prove perioperative nutritional status,speed up postoperative recovery,and reduce the occurrence of complications.
10.Mechanical Properties of Novel Interlocking Intramedullary Nail for Fixing Transverse Olecranon Fractures
Xiaoshuai QIN ; Yun GAO ; Guan WANG ; Yulin XU ; Jinui LIU ; Jianhua GE ; Ke DUAN ; Xiaobo LU ; Cheng LIANG
Journal of Medical Biomechanics 2022;37(4):E618-E623
Objective To study the effect of interlocking intramedullary nail on fixing transverse olecranon fracture. Methods Nine pairs of fresh ulna specimens were collected and the transverse fracture model of olecranon was established. Kirschner wire tension band and interlocking intramedullary nail were used to repair the fracture. Cyclic dynamic tension loads with amplitude of 25 N, mean value of 45 N and frequency of 05 Hz were applied to the triceps tendon under simulated elbow flexion conditions of 30°, 45° and 60°, respectively. The fracture displacements of specimens within 300 cycles were recorded in three groups. ResultsAt 30° flexion angle, the fracture displacement of interlocking intramedullary nail group and Kirschner wire tension band group was (1.831±0.333) mm and (3.723±2.390) mm, respectively. At 45° flexion angle, the fracture displacement of interlocking intramedullary nail group and Kirschner wire tension band group was (1.167±0.374) mm and (2.455±0.609) mm, respectively. At 60° flexion angle, the fracture displacement of interlocking intramedullary nail group and Kirschner wire tension band group was (1.407±0.342) mm and (3.112±1.025) mm, respectively. The fracture displacement of interlocking intramedullary nail was smaller. Conclusions The mechanical properties of interlocking intramedullary nail are better than those of Kirschner wire tension band, and the interlocking intramedullary nail is more stable and firmer for fixing transverse olecranon fracture. Moreover, the interlocking intramedullary nail is installed with the operating tool, thus the operation is more accurate and faster, and the operation efficiency is greatly improved.


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