1.Exploration on Scientific Connotation of "Removing Calyx" of Inulae Flos Based on Processing Experience of Old Medicine Workers
Qiao ZHOU ; Zhenni QU ; Menghan LIU ; Lei ZHANG ; Benzheng SU ; Yanpeng DAI ; Dianhua SHI
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(7):260-266
ObjectiveTo conduct a comparative quality analysis of Inulae Flos, fuzz of Inulae Flos and calyx of Inulae Flos, elucidating the scientific connotation of the "removing calyx" process in the traditional processing of Inulae Flos. MethodsInulae Flos decoction pieces were collected, and the fuzz and calyx of Inulae Flos were prepared according to the experiences of old medicine workers. Subsequently, according to the methods under the "Inulae Flos" item in the 2025 edition of the Pharmacopoeia of the People's Republic of China, the appearance characteristics and thin-layer chromatography(TLC) identification of these samples were tested, and the moisture content, total ash content, extract content were also measured. The characteristic fingerprint patterns of Inulae Flos and fuzz of Inulae Flos were established by high-performance liquid chromatography(HPLC), followed by similarity evaluation, principal component analysis(PCA), and partial least squares-discriminant analysis(PLS-DA). The contents of cryptochlorogenic acid, caffeic acid, 1,3-O-dicaffeoylqunic acid, 1,5-O-dicaffeoylqunic acid, and 1-O-acetyl britannilactone were determined to compare the quality differences of Inulae Flos, fuzz of Inulae Flos, and calyx of Inulae Flos. ResultsThe moisture content of Inulae Flos, fuzz of Inulae Flos, and calyx of Inulae Flos was all<10%. The determination results of total ash content were as follows:Calyx of Inulae Flos>Inulae Flos>fuzz of Inulae Flos, and the determination results of alcohol-soluble extract content were as follows:Fuzz of Inulae Flos>Inulae Flos>calyx of Inulae Flos. HPLC fingerprint patterns of Inulae Flos and fuzz of Inulae Flos were established, and 22 common peaks were identified. The similarity analysis and PCA showed that the overall quality of Inulae Flos and fuzz of Inulae Flos was similar, while the overall quality of calyx of Inulae Flos differed significantly from that of Inulae Flos and fuzz of Inulae Flos. PLS-DA results showed that Inulae Flos, fuzz of Inulae Flos, and calyx of Inulae Flos clustered into distinct groups, indicating significant differences among them. Cryptochlorogenic acid and caffeic acid had relatively high contents in calyx of Inulae Flos, the contents of 1,3-O-dicaffeoylqunic acid and 1,5-O-dicaffeoylqunic acid in Inulae Flos and fuzz of Inulae Flos were higher than those in calyx of Inulae Flos. The order of 1-O-acetyl britannilactone content was determined as follows:fuzz of Inulae Flos>Inulae Flos>calyx of Inulae Flos. ConclusionThe scientific nature of "Removing Calyx" process in the cleansing of Inulae Flos by old medicine workers is demonstrated by the resulting fuzz of Inulae Flos decoction pieces exhibiting enhanced cleanliness and higher content of the index component 1-O-acetyl britannilactone. This study provides a reference basis for further improving and enhancing the processing method and quality control standards of Inulae Flos.
2.Chinese expert consensus on the diagnosis and treatment of chronic pain after lung surgery with integrated Traditional Chinese and Western medicine (2026 edition)
Jichen QU ; Wentian ZHANG ; Jianqiao CAI ; Zhigang CHEN ; Bin LI ; Wei DAI ; Xiangwu WANG ; Yan LI ; Xiang LÜ ; ; Yongfu ZHU ; Mingran XIE ; Sufang ZHANG ; Lei JIANG
Chinese Journal of Clinical Thoracic and Cardiovascular Surgery 2026;33(04):522-534
Chronic post-surgical pain (CPSP) is a common long-term complication following lung surgery. Its high incidence significantly impacts patients’ quality of life and functional recovery, and imposes a substantial socioeconomic burden. This consensus aims to systematically establish a standardized integrated Chinese and Western medicine diagnostic and treatment framework for chronic post-lung surgery pain (CPLSP). Based on the latest domestic and international evidence-based medical research and multidisciplinary clinical experience, the working group comprehensively elaborates on core issues regarding CPLSP, including its definition, epidemiology, pathogenesis, clinical assessment, Western medical treatment, traditional Chinese medicine (TCM) treatment, and integrated strategies. The consensus emphasizes a patient-centered approach, adhering to the principles of multimodality, individualization, and stepwise management, highlighting the synergistic advantages of integrating Chinese and Western medicine throughout the entire perioperative management cycle encompassing "perioperative anti-inflammation, acute analgesia, and chronic rehabilitation." Through systematic literature retrieval and evidence integration, a total of 9 core recommendations were established to provide scientifically sound and clinically practical guidance.
3.Association of special family structure and physical activity with psychological sub health among secondary vocational school students
DAI Yuxin, ZENG Lifang, WANG Huixia, LEI Zhenzhou, JIANG Jing, XIN Jian, LU Jinkui, CHEN Yajun
Chinese Journal of School Health 2026;47(6):766-770
Objective:
To investigate the association of special family structure and physical activity with psychological sub health among secondary vocational school students, so as to provide reference to inform mental health promotion in the population.
Methods:
From September to December 2024, a convenience sample was drawn from 16 schools including 5 141 secondary vocational school students across 8 provinces (municipalities) in China (Fujian, Chongqing, Guangdong, Guangxi, Hubei, Jiangxi, Shanghai, Zhejiang). A self developed questionnaire, Multidimensional Sub health Questionnaire of Adolescents and International Physical Activity Questionnaire Short Form were used to investigate and evaluate basic information, family structure, psychological sub health status and physical activity. Descriptive statistics and Logistic regression analysis were performed to explore relationships of special family structures and physical activity with psychological sub health in secondary vocational school students.
Results:
The detection rate of psychological sub health among secondary vocational school students was 11.0%. The reporting rates for secondary vocational school students who lost their father or lost their mother, whose parents divorced, whose parents remarried, and those from special family structures were 2.8%, 0.8%, 11.8%, 3.9%, and 14.7%, respectively. Moreover, the detection rates of psychological sub health and its sub dimensions significantly differed among secondary vocational school students grouped by family type (divorced parental families, remarried parental families and special family structures)( χ 2=5.90-22.67, all P <0.05). Binary Logistic regression indicated that maternal bereavement was associated with a higher risk of conduct problems [ AOR ( 95% CI )= 2.90(1.15-7.33)], and parental divorce was associated with a higher risk of psychological sub health ( AOR= 2.71 , 95%CI =1.04- 7.06 ) among secondary vocational school students (both P <0.05). Interaction analysis showed that both students with a special family structure and insufficient physical activity [ AOR (95% CI )=1.99(1.44-2.75)] and those with a non-special family structure and insufficient physical activity [ AOR (95% CI )=1.81(1.48-2.22)] were associated with increased risks of psychological sub health among secondary vocational school students (both P <0.01).
Conclusion
Special family structure and physical activity are associated with psychological sub health among secondary vocational school students; early identification and assessment based interventions for those with a special family structure should be strengthened, while school based physical activity should be implemented to increase physical activity levels,thereby reducing the risk of psychological sub health.
4.Efficacy and Safety of Blinatumomab in Adult Patients with B-Cell Acute Lymphoblastic Leukemia
Ya-Lei HU ; Yong-Feng SU ; Yang LI ; Xuan ZHENG ; An WANG ; Yi-Zhi WANG ; Lei XU ; Chun-Ji GAO ; Liang-Ding HU ; Dai-Hong LIU ; Xiao-Ning GAO
Journal of Experimental Hematology 2025;33(6):1571-1576
Objective:To evaluate the efficacy and safety of blinatumomab in adult patients with relapsed/refractory(R/R)or measurable residual disease(MRD)positive B-cell acute lymphoblastic leukemia(B-ALL)in the real world.Methods:The clinical data of 30 B-ALL patients received at least 1 course of blinatumomab therapy in the Chinese PLA General Hospital from January 1st,2021 to December 31st,2023 were retrospectively analyzed,including pre-treatment baseline clinical feature,post-treatment complete response(CR),CR with partial hematologic recovery(CRh),CR with incomplete hematologic recovery(CRi),complete MRD response rate,MRD response rate(MRD<10-4),overall survival(OS),and disease-free survival(DFS),as well as drug-related adverse reactions.Results:Among 5 patients who were not assessed 4 were MRD negative and 1 did not receive bone marrow biopsy.In the R/R B-ALL group(13 cases),11 patients achieved CR/CRh/CRi and 10 patients achieved complete MRD response.In MRD+group(12 cases),9 patients achieved overall MRD response and 7 patients achieved complete MRD response.The median follow-up time was 8.4(95%CI:6.3-10.4)months.The median OS was 15.5(95%CI:0.7-30.3)months in the R/R group,while not reached in the MRD+group.The median DFS of the two groups were not reached.Drug-related adverse reactions occurred in 22 patients,and pyrexia was the most common(13 cases).Grade ≥3 adverse reactions occurred in 15 patients,and neutropenia was the most common(9 cases).Cytokine release syndrome occurred in 6 patients,including 5 cases with grade 1 and 1 case with grade 3.No patients interrupted therapy or died due to drug-related adverse reactions.Conclusion:Blinatumomab is effective in the treatment of R/R or continuous MRD+B-ALL with acceptable adverse reactions.
5.Exploring effect and mechanism of matrine on chronic obstructive pulmonary disease model rats based on TGF-β1/Smad3 pathway
Chinese Journal of Immunology 2025;41(6):1401-1406
Objective:To investigate the improvement effects and mechanism of matrine(Mat)on inflammation and pulmo-nary fibrosis in rats with chronic obstructive pulmonary disease(COPD)based on the transforming growth factor-β1(TGF-β1)/signal transduction protein Smad3 pathway.Methods:The COPD model rats were established by the method of smoking combined with lipo-polysaccharide(LPS).The rats were grouped into COPD group,Mat group(100 mg/kg)and Mat+TGF-β1 group(100 mg/kg Mat+1.25 μg/kg TGF-β1),in addition,with 15 rats in each group.Another 15 randomly selected rats were set as a control group before modeling.Lung function analyzer was applied to detect the lung function of rats;HE staining was applied to observe the pathological changes of lung tissue in rats;the contents of TNF-α,IL-1β,TGF-β1 in the supernatant of alveolar lavage fluid(BALF)were detect-ed by ELISA;TUNEL staining was applied to observe apoptosis in lung tissue;immunohistochemistry was applied to detect the expres-sions of caspase-3 and matrix metalloproteinase-9(MMP-9)proteins in lung tissue;Western blot was applied to detect the expression of TGF/Smad3 pathway related proteins.Results:Compared with the control group,there were obvious inflammatory cell infiltration and cell exfoliation in the lung tissue of COPD rats,FVC,FEV0.1/FVC,FEV0.3/FVC obviously decreased(P<0.05);the levels of TNF-α,IL-1β,TGF-β1,the number of apoptotic cells,the expressions of caspase-3,MMP-9,TGF-β1,p-Smad3,Fibronectin,Col-lagen Ⅰ and α-SMA obviously increased(P<0.05);compared with COPD group,the pathological damage of lung tissue in Mat group was obviously improved,while FVC,FEV0.1/FVC and FEV0.3/FVC obviously increased(P<0.05);the levels of TNF-α,IL-1β,TGF-β1,the number of apoptotic cells,the expressions of caspase-3,MMP-9,TGF-β1,p-Smad3,Fibronectin,Collagen Ⅰ and α-SMA obviously increased(P<0.05);compared with Mat group,Mat+TGF-β1 group obviously reversed the improvement effect of Mat on COPD rats.Conclusion:Mat can improve pulmonary inflammation and fibrosis in COPD rats,which may be related to inhibiting the activation of TGF-β1/Smad3 pathway.
6.Quantitative analysis of the distance between articular disc and condyle in patients with temporomandibular disorders
Lei SUN ; Shifeng DAI ; Yuhua CHEN ; Xinyi XU ; Kele JIANG ; Xiaowen LI ; Chengjing LI ; Tingting WU
Journal of Shanghai Jiaotong University(Medical Science) 2025;45(6):684-692
Objective·To evaluate the relationships between disc-condyle distance and anterior disc displacement,as well as between disc-condyle distance and disc morphology,in patients with temporomandibular disorders(TMD)using magnetic resonance imaging(MRI)of the temporomandibular joint(TMJ).Methods·From September 2023 to March 2024,90 patients(180 TMJs)who visited the TMJ clinic of Department of Stomatology,The Second Affiliated Hospital of Anhui Medical University,with clinical symptoms of TMD and were diagnosed via MRI with either anterior disc displacement or no significant displacement,were included.Clinical data were collected,and MRI images were used to measure the angle of disc displacement,disc-condyle distance,disc length,and thickness.The degree of disc deformation was assessed.The relationships between clinical symptoms and anterior disc displacement,between anterior disc displacement and both disc morphology and disc-condyle distance,and between disc-condyle distance and disc morphology were analyzed.Results·Among the 90 patients,there were 16 males and 74 females,with a mean age of(28.1±14.5)years.Among the 180 TMJs,175 had clinical symptoms and 5 were asymptomatic.There were 40 joints with no displacement,78 with reducible anterior disc displacement,and 62 with irreducible anterior disc displacement.In the joints with irreducible anterior disc displacement,the proportion of those with two or more symptoms was slightly higher at 62.9%,but the difference was not statistically significant compared with the joints with no displacement or reducible anterior disc displacement.MRI assessment revealed that in the joints with irreducible anterior disc displacement,the proportion of disc deformation type Ⅲ or higher was significantly higher compared with the non-displaced joints(P<0.001).The disc length was significantly shorter(P<0.001),and the intermediate zone thickness was significantly greater(P<0.001)compared with the non-displaced joints.The disc displacement angles at centric closure and maximum opening were also significantly larger(P<0.001).The disc-condyle distance was 3.10(2.70,3.70)mm for non-displaced joints,3.40(3.00,4.00)mm for joints with reducible anterior disc displacement,and 6.60(4.78,7.90)mm for joints with irreducible anterior disc displacement,with significant differences(P<0.001).The disc-condyle distance was 3.10(2.80,3.60)mm for type Ⅰ discs,3.70(3.10,4.60)mm for type Ⅱ discs,5.10(4.00,7.30)mm for type Ⅲ discs,and 6.80(4.98,8.20)mm for type Ⅳ/Ⅴ discs,with significant differences(P<0.001).The disc-condyle distance was negatively correlated with disc length(rs=-0.469,P<0.001),positively correlated with intermediate zone thickness(rs=0.319,P<0.001),and positively correlated with disc displacement angle at centric closure(rs=0.626,P<0.001).Conclusion·With increasing severity of disc deformation,intermediate zone thickness,and disc displacement angle at centric closure,as well as decreasing disc length,the disc-condyle distance increases.The disc-condyle distance is an important indicator for MRI assessment of pathological changes in TMD.
7.Impact of postoperative complications on adverse outcomes following curative-intent resection for gallbladder cancer: a national multicenter real-world study
Zhipeng LIU ; Cheng CHEN ; Jie BAI ; Yan JIANG ; Dong ZHANG ; Wei GUO ; Zhixin WANG ; Xiang LAN ; Yufu YE ; Zhaoping WU ; Jinxue ZHOU ; Shuo JIN ; Yi ZHU ; Wei CHEN ; Dalong YIN ; Yao CHENG ; Haisu DAI ; Lei ZHANG ; Zhiyu CHEN
Chinese Journal of Digestive Surgery 2025;24(7):874-881
Objective:To investigate the impact of postoperative complications on adverse outcomes following curative-intent resection for gallbladder cancer (GBC).Methods:The multi-center real-world study was conducted. The clinicopathological data of 629 patients with GBC, who were admitted to 14 medical centers including The First Affiliated Hospital of Army Medical University from the national multicenter database of Biliary Surgery Group of Elite Group of Chinese Journal of Digestive Surgery, from April 2020 to April 2024 were collected. There were 225 males and 404 females, aged (64±10)years. Patients underwent open curative-intent resection for GBC. Observation indicators: (1)surgery, postoperative complica-tions and adverse outcomes; (2) analysis of risk factors affecting postoperative adverse outcomes in patients and population attributable fraction (PAF). Missing data in predictor variables were addressed using multiple imputation with chained equations, while cases with missing outcome variables were addressed using the "multiple imputation then deletion (MID)" strategy. The severity of multicollinearity among independent variables was assessed using the variance inflation factor (VIF) test. Multivariable possion regression models with log link and robust error variance were construc-ted incorporating restricted cubic splines (3 knots) to address nonlinear relationships in continuous variables, calculating adjusted relative risk ( RR) with corresponding 95% confidence interval ( CI). Adjusted PAF was calculated for each imputed dataset using the AF package of R software, with subsequent pooling performed according to Rubin's rules. Results:(1) Surgery, postoperative complications and adverse outcomes. All 629 patients underwent curative-intent resection for GBC, of which 143 cases had postoperative complications, including 68 cases of intra-abdominal ascites, 39 cases of pulmonary infection, 21 cases of bile leakage, 12 cases of intra-abdominal hemorrhage, 11 cases of liver failure, 10 cases of pan-creatic fistula, 10 cases of wound infection, 10 cases of gastroparesis, 7 cases of cholangitis, 7 cases of sepsis. The same patient could have more than one kind of complication. Of 629 patients, there were 19 cases of postoperative 90-day death and 11 cases of missing data, 42 cases with post-operative 90-day reoperation and 7 cases with missing data, 44 cases with postoperative 90-day readmission and 3 cases with missing data, 155 cases with prolonged postoperative hospital stay and 3 cases with missing data. (2) Analysis of risk factors affecting the postoperative adverse outcomes in patients and PAF. Results of multivariate analysis showed that pulmonary infection and liver failure were independent risk factors for postoperative 90-day mortality ( RR=3.74, 12.15, 95% CI as 1.18-11.83, 1.98-74.48, P<0.05). Pulmonary infection demons-trated the highest PAF as 4.61% (95% CI as 3.94%-5.28%, P<0.05). Intra-abdominal ascites, pulmonary infection, bile leakage, and intra-abdominal hemorrhage were independent risk factors for post-operative 90-day reoperation ( RR=4.80, 3.62, 3.46, 4.99, 95% CI as 2.49-9.26, 1.42-9.21, 1.34-8.92, 1.55-16.06, P<0.05). Intra-abdominal ascites demonstrated the highest PAF as 8.65% (95% CI as 8.22%-9.08%, P<0.05). Intra-abdominal ascites, bile leakage, and liver failure were independent risk factors for postoperative 90-day readmission ( RR=6.20, 3.33, 14.33, 95% CI as 3.21-11.95, 1.33-8.35, 3.72-55.28, P<0.05). Intra-abdominal ascites demonstrated the highest PAF as 9.11% (95% CI as 8.85%-9.37%, P<0.05). Intra-abdominal ascites, pulmonary infection, bile leakage, liver failure, and wound infection were independent risk factors for prolonged postoperative hospital stay ( RR=2.29, 2.21, 2.26, 2.14, 3.35, 95% CI as 1.63-3.23, 1.41-3.46, 1.32-3.86, 1.11-4.13, 1.70-6.60, P<0.05). Intra-abdominal ascites demonstrated the highest PAF as 6.03% (95% CI as 5.71%-6.35%, P<0.05). Conclusion:Pulmonary infection is the most significant risk factor for postoperative 90-day mortality after curative-intent resection for GBC, while intra-abdominal ascites is the most significant risk factor for postoperative 90-day reoperation, postoperative 90-day readmission, and prolonged postoperative hospital stay.
8.Methods and application effects of simultaneous correction of sunken upper eyelid during double eyelid plasty
Zhihui DAI ; Lei WU ; Sen HAI ; Bin DONG ; Chong LIN ; Lulu ZHANG ; Li ZHAO
Chinese Journal of Plastic Surgery 2025;41(9):951-960
Objective:To investigate the method and clinical efficacy of simultaneous correction of sunken upper eyelid during double eyelid plasty.Methods:A retrospective analysis was conducted on patients with single eyelids and sunken upper eyelid treated at the Department of Plastic Surgery, the First People’s Hospital of Zhengzhou, from October 2022 to February 2024. All patients underwent incisional double eyelid plasty with individualized correction based on depression severity. For mild depression, a combination of pretarsal orbicularis oculi muscle flap folding and orbital septum fat flap transposition was performed for correction. For moderate depression, additional autologous stromal vascular fraction (SVF)-gel grafting would be performed if residual depression persisted after the aforementioned approach. For severe depression, if the orbital fat was sufficient, the orbicularis oculi muscle flap folding, orbital fat flap repositioning and autologous SVF-gel transplantation were used. If there was insufficient orbital fat, the correction involved the use of a orbicularis oculi muscle flap and SVF-gel transplantation. Postoperative follow-up was conducted regularly, and related complications were statistically analyzed. Six months after the surgery, two blinded plastic surgeons evaluated outcomes via visual analog scale (VAS), including five aspects: symmetry of palpebral folds(including width and curvature of the double eyelid fold), fold contour, depression improvement, scar quality, overall eyelid aesthetics. Each aspect was rated on a scale from 1 to 10, with higher scores indicating better outcomes. Patient satisfaction was scored separately (1-5 per item), with higher scores indicating greater satisfaction.Results:A total of 64 patients were enrolled, including 4 males and 60 females; the age ranged from 19 to 66 years[ (32.0±9.7) years]. The degree of sunken upper eyelid was mild in 33 cases, moderate in 19 cases and severe in 12 cases. All patients underwent double eyelid plasty and orbicularis oculi flap folding. Based on this, 45 cases (33 mild and 12 moderate cases) underwent orbital septum fat flap transposition, 11 severe cases underwent SVF-gel grafting, and 8 cases (7 moderate and 1 severe cases) required combined approaches to correct depression. During the procedure, 19 cases (38 sides) received (1.8±0.8) ml of SVF-gel injection. Among these cases, one case with severe sunken upper eyelid who did not receive orbital fat transfer was injected with high density fat (left side: 0.6 ml, right side: 0.8 ml) due to insufficient SVF-gel volume. Two cases with severe sunken upper eyelid who only had autologous SVF-gel transplantation did not fully correct the depression within 3 months post-surgery received a second SVF-gel injection[(1.0±0.1) ml]. Follow-up was conducted for 6 to 12 months after surgery. All patients experienced varying degrees of eyelid edema, which typically lasted 2 to 3 months. Ecchymosis (34 sides), conjunctival congestion (3 sides), and temporary ptosis (5 sides) all resolved within 2 weeks. Pigmentation (14 sides) and scar hyperplasia (3 sides) disappeared or stabilized within 6 months. No patients developed complications such as incision infection, hematoma, fat liquefaction, local skin unevenness, or induration. The surgeons’ VAS scores of the above five indicators were all > 8 points, and the satisfaction scores of patients for the five indicators were all > 4 points. In both scoring, the improvement of sunken upper eyelid scored the highest, which were (9.2 ± 0.9) points and (4.8 ± 0.6) points respectively.Conclusion:For patients with single eyelids and varying degrees of sunken upper eyelid, performing double eyelid plasty and orbicularis oculi muscle flap folding, individualized correction is achieved through autologous fat redistribution techniques, based on the severity of the sunken upper eyelid and the amount of orbital fat. This single procedure can restore upper eyelid volume and rejuvenate the appearance, resulting in a natural and aesthetically pleasing double eyelid with minimal complications and high patient satisfaction.
9.Neoadjuvant immunotherapy for advanced gastric cancer:current advances and future prospects
Zhang LEI ; Luo SIQI ; Qi HONGBIN ; Jin XIANGREN ; Dai LI ; Wang HAIBIN ; He TONG
Chinese Journal of Clinical Oncology 2025;52(13):697-702
This review summarizes recent advances in neoadjuvant immunotherapy for advanced gastric cancer.Through literature search in PubMed,Web of Science,and CNKI databases from 2020 to 2023,we systematically analyzed the mechanisms,clinical applications,and bio-marker research.Programmed death-1(PD-1)inhibitors combined with chemotherapy significantly improve patient outcomes,while mi-crosatellite instability(MSI),programmed death-ligand 1(PD-L1)expression,and tumor mutational burden(TMB)have been identified as important predictive biomarkers.Multi-omics analysis shows great potential in identifying optimal responders,with pyroptosis-related gene scoring system(PRS)positively correlating with anti-tumor immune infiltration.Metabolic reprogramming and epigenetic regulation in the tumor microenvironment play key roles in immune evasion,while emerging targets such as Claudin 18.2 and combination targeting strategies further enhance therapeutic efficacy.Despite significant progress,precise patient selection and overcoming resistance mechan-isms remain major challenges.Future research should focus on biomarker validation,personalized treatment strategy development,tumor microenvironment dynamic analysis,and novel combination therapy exploration to improve clinical outcomes.
10.Quantitative analysis of the distance between articular disc and condyle in patients with temporomandibular disorders
Lei SUN ; Shifeng DAI ; Yuhua CHEN ; Xinyi XU ; Kele JIANG ; Xiaowen LI ; Chengjing LI ; Tingting WU
Journal of Shanghai Jiaotong University(Medical Science) 2025;45(6):684-692
Objective·To evaluate the relationships between disc-condyle distance and anterior disc displacement,as well as between disc-condyle distance and disc morphology,in patients with temporomandibular disorders(TMD)using magnetic resonance imaging(MRI)of the temporomandibular joint(TMJ).Methods·From September 2023 to March 2024,90 patients(180 TMJs)who visited the TMJ clinic of Department of Stomatology,The Second Affiliated Hospital of Anhui Medical University,with clinical symptoms of TMD and were diagnosed via MRI with either anterior disc displacement or no significant displacement,were included.Clinical data were collected,and MRI images were used to measure the angle of disc displacement,disc-condyle distance,disc length,and thickness.The degree of disc deformation was assessed.The relationships between clinical symptoms and anterior disc displacement,between anterior disc displacement and both disc morphology and disc-condyle distance,and between disc-condyle distance and disc morphology were analyzed.Results·Among the 90 patients,there were 16 males and 74 females,with a mean age of(28.1±14.5)years.Among the 180 TMJs,175 had clinical symptoms and 5 were asymptomatic.There were 40 joints with no displacement,78 with reducible anterior disc displacement,and 62 with irreducible anterior disc displacement.In the joints with irreducible anterior disc displacement,the proportion of those with two or more symptoms was slightly higher at 62.9%,but the difference was not statistically significant compared with the joints with no displacement or reducible anterior disc displacement.MRI assessment revealed that in the joints with irreducible anterior disc displacement,the proportion of disc deformation type Ⅲ or higher was significantly higher compared with the non-displaced joints(P<0.001).The disc length was significantly shorter(P<0.001),and the intermediate zone thickness was significantly greater(P<0.001)compared with the non-displaced joints.The disc displacement angles at centric closure and maximum opening were also significantly larger(P<0.001).The disc-condyle distance was 3.10(2.70,3.70)mm for non-displaced joints,3.40(3.00,4.00)mm for joints with reducible anterior disc displacement,and 6.60(4.78,7.90)mm for joints with irreducible anterior disc displacement,with significant differences(P<0.001).The disc-condyle distance was 3.10(2.80,3.60)mm for type Ⅰ discs,3.70(3.10,4.60)mm for type Ⅱ discs,5.10(4.00,7.30)mm for type Ⅲ discs,and 6.80(4.98,8.20)mm for type Ⅳ/Ⅴ discs,with significant differences(P<0.001).The disc-condyle distance was negatively correlated with disc length(rs=-0.469,P<0.001),positively correlated with intermediate zone thickness(rs=0.319,P<0.001),and positively correlated with disc displacement angle at centric closure(rs=0.626,P<0.001).Conclusion·With increasing severity of disc deformation,intermediate zone thickness,and disc displacement angle at centric closure,as well as decreasing disc length,the disc-condyle distance increases.The disc-condyle distance is an important indicator for MRI assessment of pathological changes in TMD.


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