1.Clinical Application and Pharmacological Mechanism of Sishenwan in Treatment of Ulcerative Colitis: A Review
Keqiu YAN ; Xiaoyu ZHANG ; Sifeng JIA ; Yuyu DUAN ; Zixing QIAN ; Yifan CAI ; Junyi SHEN ; Wenjie XIAO ; Xinkun BAO ; Guangjun SUN ; Aizhen LIN
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(21):261-270
Ulcerative colitis (UC), a chronic, non-specific inflammatory bowel disease with typical symptoms such as abdominal pain, diarrhea, and bloody stools, demonstrates a high relapse rate and difficulty in curing. Sishenwan, first recorded in Internal Medicine Abstract (Nei Ke Zhai Yao), are a classic prescription for treating diarrhea caused by deficiency of the spleen and kidney Yang. The core therapeutic principle of Sishenwan is warming and tonifying the spleen and kidney, and astringing the intestine and stopping diarrhea. In recent years, Sishenwan have demonstrated distinct advantages in the clinical treatment of UC. The pathogenesis of UC involves multiple factors, including immune dysregulation and gut microbiota imbalance. Although Western medicine is effective in the short term, its side effects, high relapse rate, and resistance associated with long-term use pose substantial challenges. Sishenwan have shown excellent clinical outcomes in the treatment of UC due to deficiency of the spleen and kidney Yang. Modern clinical studies indicate that Sishenwan, used alone or in combination with Western medicine or other Chinese medicine compound prescriptions, significantly improve the clinical efficacy in treating UC due to deficiency of the spleen and kidney Yang. Sishenwan effectively alleviate core symptoms such as mucus, pus, and blood in stools, and persistent abdominal pain, reduce Mayo scores and the relapse rate, and improve patients' quality of life. Research on the material basis reveals that Sishenwan contain multiple active ingredients such as psoralen, isopsoralen, and evodiamine. Mechanism studies indicate that Sishenwan inhibit the inflammatory cascade reactions by regulating the signal network through multiple targets. Sishenwan regulate cellular immunity and restore intestinal immune homeostasis. At the microecological level, Sishenwan promote the intestinal barrier repair through the "microbiota-metabolism-immunity" axis. The current research still needs to be deepened in aspects such as the mining of specific biomarkers for syndromes and the exploration of the collaborative mechanism of traditional Chinese and Western medicine. In the future, a full-chain system covering syndrome differentiation, targeting, and monitoring needs to be constructed for promoting the paradigm transformation of Sishenwan into precision drugs. This review systematically explains the treatment mechanism of Sishenwan regarding the combination of disease and syndrome and its multi-target regulatory characteristics, providing a theoretical basis and transformation direction for the treatment of UC with integrated traditional Chinese and Western medicine.
2.Clinical Application and Pharmacological Mechanism of Sishenwan in Treatment of Ulcerative Colitis: A Review
Keqiu YAN ; Xiaoyu ZHANG ; Sifeng JIA ; Yuyu DUAN ; Zixing QIAN ; Yifan CAI ; Junyi SHEN ; Wenjie XIAO ; Xinkun BAO ; Guangjun SUN ; Aizhen LIN
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(21):261-270
Ulcerative colitis (UC), a chronic, non-specific inflammatory bowel disease with typical symptoms such as abdominal pain, diarrhea, and bloody stools, demonstrates a high relapse rate and difficulty in curing. Sishenwan, first recorded in Internal Medicine Abstract (Nei Ke Zhai Yao), are a classic prescription for treating diarrhea caused by deficiency of the spleen and kidney Yang. The core therapeutic principle of Sishenwan is warming and tonifying the spleen and kidney, and astringing the intestine and stopping diarrhea. In recent years, Sishenwan have demonstrated distinct advantages in the clinical treatment of UC. The pathogenesis of UC involves multiple factors, including immune dysregulation and gut microbiota imbalance. Although Western medicine is effective in the short term, its side effects, high relapse rate, and resistance associated with long-term use pose substantial challenges. Sishenwan have shown excellent clinical outcomes in the treatment of UC due to deficiency of the spleen and kidney Yang. Modern clinical studies indicate that Sishenwan, used alone or in combination with Western medicine or other Chinese medicine compound prescriptions, significantly improve the clinical efficacy in treating UC due to deficiency of the spleen and kidney Yang. Sishenwan effectively alleviate core symptoms such as mucus, pus, and blood in stools, and persistent abdominal pain, reduce Mayo scores and the relapse rate, and improve patients' quality of life. Research on the material basis reveals that Sishenwan contain multiple active ingredients such as psoralen, isopsoralen, and evodiamine. Mechanism studies indicate that Sishenwan inhibit the inflammatory cascade reactions by regulating the signal network through multiple targets. Sishenwan regulate cellular immunity and restore intestinal immune homeostasis. At the microecological level, Sishenwan promote the intestinal barrier repair through the "microbiota-metabolism-immunity" axis. The current research still needs to be deepened in aspects such as the mining of specific biomarkers for syndromes and the exploration of the collaborative mechanism of traditional Chinese and Western medicine. In the future, a full-chain system covering syndrome differentiation, targeting, and monitoring needs to be constructed for promoting the paradigm transformation of Sishenwan into precision drugs. This review systematically explains the treatment mechanism of Sishenwan regarding the combination of disease and syndrome and its multi-target regulatory characteristics, providing a theoretical basis and transformation direction for the treatment of UC with integrated traditional Chinese and Western medicine.
3.Xihuangwan Inhibits Mitochondrial Energy Metabolism in Ovarian Cancer Cells
Xianxin YAN ; Shouyi HONG ; Ruirui MA ; Yanqiu WANG ; Junyi BU ; Min MA
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(1):70-76
ObjectiveTo study the effect of Xihuangwan extract on mitochondrial energy metabolism in ovarian cancer SKOV3 and HEY cells and to explore the underlying mechanism. MethodSKOV3 and HEY cells were cultured in vitro and treated with different concentrations (0, 5, 10, 15, 20 g·L-1) of Xihuangwan extract. Methyl thiazolyl tetrazolium (MTT) was used to examine the viability of SKOV3 and HEY cells treated with Xihuangwan extract. The adenosine-triphosphate (ATP) levels in SKOV3 and HEY cells were measured by kit. Flow cytometry was employed to measure the content of reactive oxygen species (ROS) in cells. Western blot was employed to determine the protein levels of peroxisome proliferator-activated receptor-γ co-activator 1α (PGC1α), transcription factor A, mitochondrial (TFAM), translocase of outer mitochondrial membrane 20 (TOMM20), and aplasia Ras homologue member Ⅰ (ARHⅠ) in SKOV3 and HEY cells. Mito-Tracker Green staining was used to observe the morphological changes of mitochondria in SKOV3 and HEY cells. ResultCompared with blank group, Xihuangwan extract treatment for 24, 48 h inhibited the viability of SKOV3 and HEY cells in a concentration-dependent manner (P<0.05, P<0.01). Compared with blank group, Xihuangwan extract (10, 15, 20 g·L-1) groups presented lowered ATP levels (P<0.05, P<0.01), and the 20 g·L-1 Xihuangwan extract group had lower ATP level than the 10 and 15 g·L-1 Xihuangwan extract groups (P<0.05). Compared with blank group, Xihuangwan extract increased the content of ROS in SKOV3 and HEY cells in a concentration-dependent manner (P<0.05, P<0.01), and the 20 g·L-1 Xihuangwan extract group had higher ROS content than the 10 g·L-1 Xihuangwan extract group (P<0.05). Compared with blank group, Xihuangwan extract up-regulated the expression level of ARHⅠ protein in SKOV3 and HEY cells in a concentration-dependent manner (P<0.01), and the expression levels of ARHⅠ protein was higher in the 20 g·L-1 Xihuangwan extract group than in the 10 and 15 g·L-1 Xihuangwan extract groups (P<0.05). Compared with the blank group, Xihuangwan extract down-regulated the protein levels of PGC1α, TFAM, and TOMM20 in SKOV3 and HEY cells in a concentration-dependent manner (P<0.05, P<0.01), and the protein levels of TFAM and TOMM20 in the HEY cells treated with 20 g·L-1 Xihuangwan extract were lower than those in the HEY cells treated with 10, 15 g·L-1 Xihuangwan extract (P<0.05). Compared with the blank group, 20 g·L-1 Xihuangwan extract decreased the Mito-Tracker fluorescence intensity of SKOV3 and HEY cells (P<0.05). ConclusionXihuangwan can compromise the mitochondrial function of ovarian cancer SKOV3 and HEY cells and reduce cell energy metabolism to inhibit the proliferation of SKOV3 and HEY cells by up-regulating ARHⅠ and inhibiting PGC1α/TFAM signaling axis.
4.Application of transcranial sonography in the assessment of substantia nigra echo in children with attention deficit hyperactivity disorder
Bing MA ; Yaohong SHEN ; Yan CHEN ; Junyi ZHU ; Caishan WANG ; Yingchun ZHANG
Chinese Journal of Ultrasonography 2024;33(1):42-48
Objective:To determine the clinical application value of transcranial sonography (TCS) in the diagnosis of attention deficit hyperactivity disorder (ADHD) in children.Methods:A total of 50 children aged 6-12 years diagnosed with ADHD (ADHD group) and 45 age-matched healthy children (control group) who presented to Suzhou Municipal Hospital and Children′s Hospital of Soochow University from August 2021 to August 2022 were prospectively enrolled for TCS examination. ADHD was diagnosed in accordance with the Diagnostic and Statistical Manual of Mental Disorders, fifth edition (DSM-Ⅴ) criteria established by the American Psychiatric Association.Based on clinical symptom characteristics, ADHD was further classified into 3 subtypes, including 14 cases of predominantly inattentive, 3 cases of predominantly hyperactive/impulsive, and 33 cases of combined presentation. The substantia nigra(SN) hyperechoic area and the ratio of SN hyperechoic area to midbrain area (S/M) were measured and compared between the two groups. The examination of the correlation was performed between SN hyperechoic area, S/M ratio, and DSM-Ⅴ scores within the ADHD group.Results:Semi-quantitative analysis: the proportion of the SN grade Ⅲ or more in ADHD group was significantly higher than that in control group [96.00%(48/50) vs 13.3%(6/45), P<0.05]. Quantitative analysis: the area of SN hyperechogenicity and the ratio of S/M were significantly larger in ADHD group than in control group [0.32(0.22, 0.38)cm 2 vs 0.00(0.00, 0.00)cm 2, 7.08(5.11, 8.75)% vs 0.00(0.00, 0.00)%, all P<0.05]. Correlation analysis: The SN hyperechoic area and S/M ratio showed no significant correlations with DSM-Ⅴ scores in the ADHD group ( r=0.144, 0.142, all P>0.05). Conclusions:TCS can detect the SN echo enhancement of ADHD children, and the proportion of SN echo enhancement, SN hyperechoic area and S/M ratio are significantly higher than those of normal children, but the SN hyperecho area and S/M ratio are not significantly correlated with DSM-Ⅴ scores.
5.Animal Models of Ovarian Cancer Based on Characteristics of Clinical Symptoms of Traditional Chinese and Western Medicine
Chu YI ; Xinyi MA ; Yangjie WU ; Junyi BU ; Min MA ; Xianxin YAN
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(8):206-214
ObjectiveOvarian cancer is the third most common gynecologic cancer worldwide, with the second highest mortality rate among gynecologic cancers, and age-standardized rates are gradually increasing in many low- and middle-income countries. At present, its etiology and pathogenesis are not clear. There are no obvious symptoms in the early stage, and when the symptoms become obvious, it often indicates the advanced stage. The 5-year survival rate of the advanced stage is only 17%, which poses a great threat to women's health. Therefore, an in-depth study of the etiology and pathogenesis of ovarian cancer is very important to the exploration of prevention and treatment methods for ovarian cancer. Based on the clinical characteristics of ovarian cancer in traditional Chinese and Western medicine, and combined with the existing evaluation methods of animal models, this study evaluated the animal model of ovarian cancer, and provided analysis and suggestions. MethodThis study searched China National Knowledge Infrastructure (CNKI), Wanfang data, VIP information database, and PubMed database using the keywords "ovarian cancer" and "animal model", excluded the articles that did not meet the criteria, and then classified the remaining studies. Combined with the clinical diagnostic criteria of Western medicine and traditional Chinese medicine syndrome differentiation, the related indicators of ovarian cancer animal models were assigned and the degree of agreement was evaluated. ResultThe use of the transplanted animal model exhibited the highest frequency, followed by that of the induced model. The degree of agreement of traditional Chinese medicine for each model was lower than that of Western medicine. The induced ovarian cancer model had a high degree of clinical agreement and was similar to human ovarian cancer in terms of tumor growth pattern, disease progression and complications, which is an ideal animal model of ovarian cancer. Although this animal model can simulate the etiology and pathogenesis of ovarian cancer to a certain extent and reflect some indicators of traditional Chinese and Western medicine, it lacks differentiation of traditional Chinese medicine syndromes. ConclusionOn the basis of the original model, the animal model of ovarian cancer was added with Qi deficiency syndrome, blood deficiency syndrome, Qi stagnation syndrome, blood stasis syndrome, heat-toxin syndrome, and Yang deficiency syndrome to establish an animal model combining traditional Chinese medicine disease and syndrome of ovarian cancer, which could better simulate the clinical actual situation of traditional Chinese and Western medicine and lay a solid foundation for the study of integrated traditional Chinese and Western medicine for the treatment of ovarian cancer.
6.Roles of pharmacodynamic substances of QiangliDingxuan tablets in vasodilation based on spectrum-effect relationships
Ping YAN ; Maoning WANG ; Junyi ZHU ; Pan FANG ; Hang ZHANG ; Yan ZHANG ; Han ZHANG
Military Medical Sciences 2024;48(5):382-388
Objective To establish the fingerprints of QiangliDingxuan tablets(QLDX),determine their pharmacody-namic indexes of vasodilation and study the spectrum-effect relationships between the chemical components of QLDX and the property of vasodilation.Methods The rate of vascular relaxation was used as an index to evaluate the extent to which QLDX relaxed isolated superior mesenteric artery ring.The Grey correlation degree and partial least square regression(PLSR)were used to analyze"spectrum-effect"correlations before components with greater contribution to drug efficacy were screened out.Results There were 21 common peaks in the HPLC fingerprint of QLDX,and the similarity exceeded 0.88.A comparison with the chromatogram of the reference substance revealed 14 characteristic peaks.Vasodilative experiments showed that all the 10 batches of samples had vasodilatory effects.The correlation between the 21 chromato-graphic peaks was greater than 0.73.PLSR showed that 11 components were positively correlated with the vasodilatory effect.Six known compounds included parishin A,parishin C,5-hydroxymethylfurfural,luteolin,Linarin and ligustrazine.Conclusion The vasodilatory effect of QLDX results from the combined action of multiple components.Parishin A,parishin C,5-hydroxymethylfurfural,luteolin,Linarin and ligustrazine are positively correlated with this effect,which may be the main pharmacodynamic substance basis of vascular relaxation.
7.Efficacy of Lenvatinib Combined with Anti–PD-1 Antibodies Plus Transcatheter Arterial Chemoembolization for Hepatocellular Carcinoma with Portal Vein Tumor Thrombus: A Retrospective, Multicenter Study
Xiangye OU ; Junyi WU ; Jiayi WU ; Yangkai FU ; Zhenxin ZENG ; Shuqun LI ; Yinan LI ; Deyi LIU ; Han LI ; Bin LI ; Jianyin ZHOU ; Shaowu ZHUANG ; Shuqun CHENG ; Zhibo ZHANG ; Kai WANG ; Shuang QU ; Maolin YAN
Cancer Research and Treatment 2024;56(4):1207-1218
Purpose:
The prognosis of patients with hepatocellular carcinoma (HCC) and portal vein tumor thrombus (PVTT) is extremely poor, and systemic therapy is currently the mainstream treatment. This study aimed to assess the efficacy and safety of lenvatinib combined with anti–programmed cell death-1 antibodies and transcatheter arterial chemoembolization (triple therapy) in patients with HCC and PVTT.
Materials and Methods:
This retrospective multicenter study included patients with HCC and PVTT who received triple therapy, were aged between 18 and 75 years, classified as Child-Pugh class A or B, and had at least one measurable lesion. The overall survival (OS), progression-free survival (PFS), objective response rates, and disease control rates were analyzed to assess efficacy. Treatment-related adverse events were analyzed to assess safety profiles.
Results:
During a median follow-up of 11.23 months (range, 3.07 to 34.37 months), the median OS was greater than 24 months, and median PFS was 12.53 months. The 2-year OS rate was 54.9%. The objective response rate and disease control rate were 69.8% (74/106) and 84.0% (89/106), respectively; 20.8% (22/106) of the patients experienced grade 3/4 treatment-related adverse events and no treatment-related deaths occurred. The conversion rate to liver resection was 31.1% (33/106), with manageable postoperative complications. The median OS was not reached in the surgery group, but was 19.08 months in the non-surgery group. The median PFS in the surgery and non-surgery groups were 20.50 and 9.00 months, respectively.
Conclusion
Triple therapy showed promising survival benefits and high response rates in patients with HCC and PVTT, with manageable adverse effects.
8.Reference values for cerebral ventricular size in neonates with gestational age of 33 +0-41 +6 weeks
Beilei HUANG ; Yulin PENG ; Yingchun LUO ; Meixiang ZHANG ; Yifan KONG ; Junyi YAN
Chinese Journal of Perinatal Medicine 2023;26(8):650-657
Objective:To establish the reference values and neurological intervention cutoffs for cerebral ventricular size in neonates born at 33 +0-41 +6 weeks of gestation and to investigate the influential factors and reliability of the related indices. Methods:This study prospectively recruited 1 370 1-to 7-day neonates born or hospitalized at the Hunan Provincial Maternal and Child Health Care Hospital from February to August 2021. All the neonates, who were born between 33 +0 and 41 +6 weeks of gestation, were subjected to ultrasound scanning to obtain the indices, including ventricular index (VI), anterior horn width (AHW), thalamo-occipital distance (TOD), and ventricular height (VH). The reference value and neurological intervention cutoff for each index were set. Quantile regression was used to estimate the correlation between each index and continuous covariates [gestational age at birth (GA) and birth weight (BW)]. Mann-Whitney U test was used to analyze the differences in the medians of indices in different categorical covariates groups (males/females, left/right lateral ventricles, vaginal delivery/cesarean section, and singleton/multiple births). Intraclass correlation coefficient (ICC) calculated by a two-way mixed effect model and absolute agreement was used to access intra-rater reliability; ICC via a two-way random effect model and absolute agreement was utilized to rate inter-rater reliability (pool reliability: ICC below 0.50; moderate reliability: ICC between 0.50 and 0.75; good reliability: ICC between 0.75 and 0.90; excellent reliability: ICC exceeding 0.90). Results:The upper limits of reference values for AHW, TOD, VI, and VH in 555 (40.5%) preterm neonates were 2.7-3.5 mm, 20.9-22.5 mm, 12.6-13.7 mm, and 3.8-4.9 mm, and in 815 (59.5%) term newborns were 3.4-4.3 mm, 18.6-21.3 mm, 14.2-14.7 mm, and 3.4-3.8 mm, respectively. The cutoff of neurosurgical intervention for each index was the upper limit of reference value plus 4 mm. AHW median was positively correlated with GA [partial regression coefficient (PRC): 0.12, P<0.05], while TOD and VH medians were negatively correlated with GA (PRC:-0.31 and-0.06, both P<0.05). VI, AHW, and TOD medians were positively associated with BW (PRC: 0.46, 0.23, and 0.97, all P<0.05). The medians of VH, AHW, and TOD in the left cerebral ventricular exceeded those in the right cerebral ventricular, respectively (VH: 2.0 vs 1.8 mm, U=836 071.50; AHW: 1.8 vs 1.7 mm, U=874 141.50; TOD: 13.6 vs 12.5 mm, U=738 409.00, all P<0.05). The medians of AHW and VI in male neonates were greater than those in female newborns, respectively (AHW: 1.8 vs 1.7 mm, U=834 124.00; VI: 11.1 vs 10.8 mm, U=884 156.50, both P<0.05). The neonates delivered vaginally had greater AHW median, but smaller TOD median than those delivered by cesarean section (AHW: 2.0 vs 1.6 mm, U=685 546.00, P<0.001; TOD: 13.1 vs 12.9 mm, U=850 797.00, P=0.010). The AHW median in singleton newborns exceeded that in multiple births (1.9 vs 1.4 mm, U=356 999.00, P<0.001). The lower limits of 95% confidence intervals for intra-rater and inter-rater ICCs exceeded 0.75 and 0.50, respectively. Conclusion:Reference values and surgical intervention thresholds for VI, AHW, TOD, VH of newborns with a gestational age of 33 +0-41 +6 weeks were preliminarily established, and the reliability of these indicators were verified.
9.Clinical efficacy analysis of different interventional approaches for patent ductus arteriosus in children (≤7 years)
Zeming ZHOU ; Hongmao WANG ; Hong ZHENG ; Huijun SONG ; Shiguo LI ; Chaowu YAN ; Haibo HU ; Qiong LIU ; Zhongying XU ; Liang XU ; Jianhua LV ; Gejun ZHANG ; Junyi WAN ; Jinglin JIN
Chinese Journal of Clinical Thoracic and Cardiovascular Surgery 2023;30(05):699-703
Objective To explore the safety and effectiveness of different interventional approaches for the treatment of patent ductus arteriosus (PDA) in children. Methods The children (≤7 years) who underwent interventional treatment for PDA from 2019 to 2020 in our hospital were retrospectively included. The patients were divided into 3 groups according to the procedures: a conventional arteriovenous approach group, a simple venous approach group, and a retrograde femoral artery approach group. The clinical efficacy of the patients was compared. Results A total of 220 patients were included. There were 78 males and 142 females, with an average age of 3.21±1.73 years, weight of 14.99±5.35 kg, and height of 96.19±15.77 cm. The average diameter of the PDA was 3.35±1.34 mm. A total of 85 patients received a conventional arteriovenous approach, 104 patients received a simple venous approach, and 31 patients received a retrograde femoral artery approach. The diameter of PDA in the retrograde femoral artery group was smaller than that in the other two groups (3.44±1.43 mm vs. 1.99±0.55 mm; 3.69±1.17 mm vs. 1.99±0.55 mm, P<0.001); the contrast medium usage [40 (30, 50) mL vs. 20 (20, 30) mL; 35 (25, 50) mL vs. 20 (20, 30) mL, P≤0.001] and operation time [32 (26, 44) min vs. 25 (23, 30) min; 29 (25, 38) min vs. 25 (23, 30) min, P<0.05] in the simple venous approach group were significantly less or shorter than those in the other two groups; the length of hospital stay of the conventional arteriovenous group was longer than that in the other two groups [3 (3, 5) d vs. 4 (3, 6) d; 4 (3, 5) d vs. 4 (3, 6) d, P<0.05]. There was no significant difference in postoperative complications. Conclusion It is safe and effective to close PDA through simple venous approach. The retrograde femoral artery approach has the advantage of simplifying the surgical procedure for PDA with small diameters.
10.The efficacy of infra-acetabular screw placement assisted by orthopaedic navigation robot in the treatment of acetabular fractures
Peiran XUE ; Siyue CHEN ; Dong YAN ; Junyi YUE ; Kaifang CHEN ; Xiaodong GUO
Chinese Journal of Orthopaedics 2023;43(19):1285-1292
Objective:To evaluate the efficacy of infra-acetabular screw placement assisted by orthopedic navigation robot in the treatment of acetabular fractures.Methods:The data of 34 patients who were treated and followed up from September 2021 to September 2022 were retrospectively analyzed. According to the fixation method, the patients were divided into the robot group (robot assisted placement of infra-acetabular screws) and the control group (placement of the pubis-ischium plate manually). There were 16 patients in the robot group, 7 males and 9 females, aged 57.00±6.00 years (range, 51-70 years). According to Letournel classification, there were 8 cases of both-column fractures, 4 cases of anterior column and posterior hemitransverse fractures, and 4 cases of T-shaped fractures. There were 18 cases in the control group, 8 males and 10 females, aged 54.22±8.95 years (range, 38-69 years). According to Letournel classification, there were 10 cases of both-column fractures, 6 cases of anterior column and posterior hemitransverse fractures, and 2 cases of T-shaped fractures. The intraoperative fluoroscopy times, total operation time, exposure time and screw placement (plate) time, blood loss, Matta evaluation, Majeed score, and screw placement accuracy rate (the degree of screw cutting-out was evaluated according to Lonstein criteria) were compared between the two groups.Results:All patients were followed up for 12.21±3.62 months (range, 6-17 months). In the robot group, the fluoroscopy frequency was 9.69±0.95 times (range, 8-11 times), the screw placement time was 34.32±5.28 min (range, 21-45 min), and the blood loss was 461.88±228.71 ml (range, 200-800 ml). The control group was 10.11±1.41 times (range, 7-13 times), 42.89±4.38 min (range, 36-55 min), 674.44±220.65 ml (range, 420-1,100 ml), respectively. There were significant differences in screw (plate) placement time ( t=5.18, P<0.001) and blood loss ( t=2.76, P<0.001). The accuracy of robot screw placement was 100%. According to Lonstein evaluation, there were 14 cases of grade 0 (87.5%, 14/16) and 2 cases of grade I (12.5%, 2/16). At 30 days of follow-up, all patients had good fracture ends and no internal fixation failure occurred. One week after surgery, the results of Matta evaluation in robot group were excellent in 11 cases, good in 3 cases, and poor in 2 cases, with an excellent and good rate of 87.5%. In the control group, 11 cases were excellent, 4 cases were good, and 3 cases were poor, with an excellent and good rate of 83.3%. There was no significant difference in the excellent and good rate of Matta evaluation between the two groups (χ 2=0.23, P=0.892). At last follow-up, the Majeed score of robot group was 87.81±8.82 (range, 71-98), including excellent in 10 cases, good in 5 cases, and fair in 1 case. The score of the control group was 86.22±6.85 (range, 70-95), including 12 cases of excellent, 4 of good, and 2 of fair. There was no significant difference in Majeed score between the two groups ( t=0.59, P=0.551). No complications related to the use of robot-assisted navigation or plate fixation were observed in both groups. Conclusion:Through the navigation planning and assistance of the robot, the infra-acetabular screws can be accurately and safely placed, which avoids the shortcomings of excessive exposure and bleeding during the application of the pubis-ischium plate, the outcome was similar to that of plate treatment.

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