With the rapid development of competitive sports, the incidence of anterior cruciate ligament (ACL) injury is on the rise. Such injuries may shorten athletes′ career and lead to other long-term adverse consequences. Although athletes generally recover well after ACL reconstruction, many still struggle to return to their pre-injury performance levels. Advances in the understanding of ACL anatomy and injury mechanisms, along with the evolution of surgical techniques and rehabilitation methods, have provided more individualized and tailored options for athletes following ACL injuries. However, there is currently no consensus in China regarding surgical and rehabilitation strategies for competitive athletes aiming to return to sports after ACL injuries. To this end, the Sports Medicine Committee of the Chinese Research Hospital Association and the Editorial Board of the Chinese Journal of Trauma jointly formulated the Expert consensus on surgical treatment and rehabilitation for competitive sports athletes returning to sports after anterior cruciate ligament injury ( version 2025), and presented 14 recommendations covering surgical indications, preoperative rehabilitation, surgical timing, surgical strategies and postoperative rehabilitation strategies, aiming to improve the surgical treatment and rehabilitation system for ACL injuries in competitive athletes and facilitate their return to high-level sports performance after injury.

Objective:To analyze the incidence trend of lip and oral cancer in China from 1990 to 2021.Methods:The incidence data of lip and oral cancer in China from 1990 to 2021 were obtained through the Global Health Data Exchange (GHDx) database, including incidence rates by gender and age-standardized incidence rates. Joinpoint regression was used to analyze the trend of lip and oral cancer incidence rate. Age-period-cohort (APC) model was adopted to estimate the effects of Age, Period and Cohort on the incidence of lip and oral cancer in China.Results:The crude and age-standardized incidence rates of lip and oral cancer in China from 1990 to 2021 showed an increasing trend, and the crude incidence rates of the whole population, male and female in the year 2021 increased by 216.8%, 266.7% and 130.4%, respectively, compared with 1990. The age effect, period effect and birth cohort effect of the incidence risk of lip and oral cancer in China were statistically significant (all P<0.05). People of older the age and the more recent the birth cohort, the higher the incidence risk. Conclusions:The incidence of lip and oral cancer is on the rise in China from 1990 to 2021. Age, period and birth cohort are all the factors affecting the incidence of lip and oral cancer.

Objective:To explore the relationship between depression, perfectionism and self-injurious function in adolescents with self-injury.Methods:A total of 6 149 adolescents from two middle schools were selected by multi-stage random sampling method to conduct a cross-sectional investigation, and 530 cases with self-injurious behaviors were screened out as the self-injury group, while the remaining 5 619 students served as the non-self-injury group.The self-rating depression scale, the Chinese-revised Frost multidimensional perfectionism scale, and the Ottawa self-injury inventory Chinese revised version were used for investigation.SPSS 24.0 software was used for descriptive statistics and Spearman correlation analysis, and the PROCESS 4.1 macro program was used for mediating effect test(model 4)and moderating effect test(model 7).Results:(1)The incidence of self-injury among adolescents was 8.62%(530/6 149), which was significantly different in gender( χ2=50.942, P<0.01) and grade( χ2=37.401, P<0.01). (2)The scores of depression(48(41, 55)) and maladaptive perfectionism(64(53, 76)) in the self-injury group were higher than those in the non-self-injury group(36(29, 43), 49(35, 61)), and the differences were statistically significant( Z=-23.233, -18.599, both P<0.01). (3)Adolescents with self-injury mostly had external emotion regulation(70.38%(373/530)) as the dominant function.(4)The results of Spearman correlation analysis showed that self-injurious function was significantly and positively correlated with depression( r=0.382, P<0.01) and maladaptive perfectionism( r=0.356, P<0.01), and depression was significantly and positively correlated with maladaptive perfectionism( r=0.352, P<0.01). (5)Maladaptive perfectionism partially mediated the relationship between depression and self-injurious function( β=0.086, P<0.001), and the mediating effect accounted for 21.88%(0.086/0.393)of the total effect.(6)Gender moderated the first stage of the mediation pathway(depression→maladaptive perfectionism)( β=0.180, P<0.05), which indicated that depression had a stronger predictive effect on maladaptive perfectionism in women( βsimple=0.105, 95% CI=0.063-0.154, P<0.05). Conclusion:In the prediction of depression on self-injurious function, maladaptive perfectionism plays a partial mediating role, and this mediating effect is moderated by gender.

Objective:To explore the relationship between depression, perfectionism and self-injurious function in adolescents with self-injury.Methods:A total of 6 149 adolescents from two middle schools were selected by multi-stage random sampling method to conduct a cross-sectional investigation, and 530 cases with self-injurious behaviors were screened out as the self-injury group, while the remaining 5 619 students served as the non-self-injury group.The self-rating depression scale, the Chinese-revised Frost multidimensional perfectionism scale, and the Ottawa self-injury inventory Chinese revised version were used for investigation.SPSS 24.0 software was used for descriptive statistics and Spearman correlation analysis, and the PROCESS 4.1 macro program was used for mediating effect test(model 4)and moderating effect test(model 7).Results:(1)The incidence of self-injury among adolescents was 8.62%(530/6 149), which was significantly different in gender( χ2=50.942, P<0.01) and grade( χ2=37.401, P<0.01). (2)The scores of depression(48(41, 55)) and maladaptive perfectionism(64(53, 76)) in the self-injury group were higher than those in the non-self-injury group(36(29, 43), 49(35, 61)), and the differences were statistically significant( Z=-23.233, -18.599, both P<0.01). (3)Adolescents with self-injury mostly had external emotion regulation(70.38%(373/530)) as the dominant function.(4)The results of Spearman correlation analysis showed that self-injurious function was significantly and positively correlated with depression( r=0.382, P<0.01) and maladaptive perfectionism( r=0.356, P<0.01), and depression was significantly and positively correlated with maladaptive perfectionism( r=0.352, P<0.01). (5)Maladaptive perfectionism partially mediated the relationship between depression and self-injurious function( β=0.086, P<0.001), and the mediating effect accounted for 21.88%(0.086/0.393)of the total effect.(6)Gender moderated the first stage of the mediation pathway(depression→maladaptive perfectionism)( β=0.180, P<0.05), which indicated that depression had a stronger predictive effect on maladaptive perfectionism in women( βsimple=0.105, 95% CI=0.063-0.154, P<0.05). Conclusion:In the prediction of depression on self-injurious function, maladaptive perfectionism plays a partial mediating role, and this mediating effect is moderated by gender.

Objective:To analyze the incidence trend of lip and oral cancer in China from 1990 to 2021.Methods:The incidence data of lip and oral cancer in China from 1990 to 2021 were obtained through the Global Health Data Exchange (GHDx) database, including incidence rates by gender and age-standardized incidence rates. Joinpoint regression was used to analyze the trend of lip and oral cancer incidence rate. Age-period-cohort (APC) model was adopted to estimate the effects of Age, Period and Cohort on the incidence of lip and oral cancer in China.Results:The crude and age-standardized incidence rates of lip and oral cancer in China from 1990 to 2021 showed an increasing trend, and the crude incidence rates of the whole population, male and female in the year 2021 increased by 216.8%, 266.7% and 130.4%, respectively, compared with 1990. The age effect, period effect and birth cohort effect of the incidence risk of lip and oral cancer in China were statistically significant (all P<0.05). People of older the age and the more recent the birth cohort, the higher the incidence risk. Conclusions:The incidence of lip and oral cancer is on the rise in China from 1990 to 2021. Age, period and birth cohort are all the factors affecting the incidence of lip and oral cancer.

With the rapid development of competitive sports, the incidence of anterior cruciate ligament (ACL) injury is on the rise. Such injuries may shorten athletes′ career and lead to other long-term adverse consequences. Although athletes generally recover well after ACL reconstruction, many still struggle to return to their pre-injury performance levels. Advances in the understanding of ACL anatomy and injury mechanisms, along with the evolution of surgical techniques and rehabilitation methods, have provided more individualized and tailored options for athletes following ACL injuries. However, there is currently no consensus in China regarding surgical and rehabilitation strategies for competitive athletes aiming to return to sports after ACL injuries. To this end, the Sports Medicine Committee of the Chinese Research Hospital Association and the Editorial Board of the Chinese Journal of Trauma jointly formulated the Expert consensus on surgical treatment and rehabilitation for competitive sports athletes returning to sports after anterior cruciate ligament injury ( version 2025), and presented 14 recommendations covering surgical indications, preoperative rehabilitation, surgical timing, surgical strategies and postoperative rehabilitation strategies, aiming to improve the surgical treatment and rehabilitation system for ACL injuries in competitive athletes and facilitate their return to high-level sports performance after injury.

Premature ovarian insufficiency(POI),also known as"ovarian insufficiency",has an incidence of 1％～5％.The incidence has been on the rise in recent years,seriously affecting women's physical and mental health and quality of life.At present,the cause and mechanisms of POI are still unclear,and the method and applications of model construction are also confusing.Most models have some shortcomings in pertinence and stability.The limitations greatly limit research into the clinical diagnosis and treatment of POI.This paper summarizes and discusses the etiology and pathogenesis of POI and the construction of POI animal models to provide a comprehensive reference for those studying POI.

Objective:To investigate the prognosis and safety of ripretinib in the treatment of patients with advanced gastrointestinal mesenchymal stromal tumors (GISTs) and to analyze the relationship between blood concentrations of this drug and prognosis.Methods:In this retrospective study, we investigated the effects of ripretinib in patients with advanced GISTs. The inclusion criteria comprised: (1) daily oral administration of ripretinib scheduled; and (2) uninterrupted treatment for at least 1month, with a stable and relatively fixed daily dosage maintained for a minimum of 2 weeks. Exclusion criteria comprised concurrent use of other tyrosine kinase inhibitors and presence of significant organ dysfunction. We retrospectively identified 79 patients with advanced GISTs who had received ripretinib across seven medical centers, namely Jiangsu Provincial Hospital, Jiangsu Cancer Hospital, Nanjing Drum Tower Hospital Affiliated to Nanjing University, Sir Run Run Shaw Hospital of Zhejiang University, Renji Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, and the General Hospital of the People's Liberation Army, from 1 June 2021 to 31 March 2024. The cohort included 48 men and 31 women, 19 of whom had received ripretinib as second-line, 13 as third-line, and 47 as fourth-line therapy. Two peripheral venous blood samples were obtained from each participant and high-performance liquid chromatography-tandem mass spectrometry used to determine peak (Cmax) and trough (Cmin) concentrations of ripretinib. Machine learning methodologies, specifically the K-nearest neighbor algorithm combined with the Gridsearch CV strategy, were employed to establish the threshold for Cmin. We analyzed adverse reactions, treatment efficacy, median progression-free survival (mPFS), and the relationship between drug blood concentration and selected clinical parameters.Results:In the entire cohort, the Cmin and Cmax of ripretinib were 467 ± 360 μg/L and 986 ± 493 μg/L, respectively. Notably, female patients and individuals in the high-dose group exhibited significantly higher values for both Cmin and Cmax (both P<0.05). However, variations in drug concentrations associated with the line of ripretinib therapy, treatment efficacy, disease progression, and presence of selected specific genetic mutations were not significantly associated with values of Cmin and Cmax ( P>0.05). Among the 79 patients with advanced GISTs receiving ripretinib, reported adverse reactions included alopecia (53, 67.09%), hand–foot syndrome (24, 30.38%), fatigue (22, 27.85%), and myalgia (21, 26.58%). Two patients (2.53%) had grade III complications, both classified as hand–foot syndrome. The correlation between Cmax and adverse reactions was not statistically significant ( P > 0.05). By the time of the latest follow-up, five deaths (6.3%) had occurred within the cohort. The mPFS for the group was 16.3 months, with a mPFS of 14.4 months for those receiving standard dosage and 7.0 months for those receiving escalating dosage. Among the 65 patients treated with standard doses of ripretinib, those with Cmin exceeding a threshold of 450 μg/L exhibited a significantly longer mPFS (18.0 months vs.13.7 months; P < 0.05). Conclusion:In China, patients with advanced GISTs exhibit a notable tolerance to ripretinib, with no evidence for a correlation between adverse reactions and Cmax for the drug. Additionally, a Cmin exceeding 450 μg/L may be associated with an extended mPFS.

Objective:To investigate the prognosis and safety of ripretinib in the treatment of patients with advanced gastrointestinal mesenchymal stromal tumors (GISTs) and to analyze the relationship between blood concentrations of this drug and prognosis.Methods:In this retrospective study, we investigated the effects of ripretinib in patients with advanced GISTs. The inclusion criteria comprised: (1) daily oral administration of ripretinib scheduled; and (2) uninterrupted treatment for at least 1month, with a stable and relatively fixed daily dosage maintained for a minimum of 2 weeks. Exclusion criteria comprised concurrent use of other tyrosine kinase inhibitors and presence of significant organ dysfunction. We retrospectively identified 79 patients with advanced GISTs who had received ripretinib across seven medical centers, namely Jiangsu Provincial Hospital, Jiangsu Cancer Hospital, Nanjing Drum Tower Hospital Affiliated to Nanjing University, Sir Run Run Shaw Hospital of Zhejiang University, Renji Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, and the General Hospital of the People's Liberation Army, from 1 June 2021 to 31 March 2024. The cohort included 48 men and 31 women, 19 of whom had received ripretinib as second-line, 13 as third-line, and 47 as fourth-line therapy. Two peripheral venous blood samples were obtained from each participant and high-performance liquid chromatography-tandem mass spectrometry used to determine peak (Cmax) and trough (Cmin) concentrations of ripretinib. Machine learning methodologies, specifically the K-nearest neighbor algorithm combined with the Gridsearch CV strategy, were employed to establish the threshold for Cmin. We analyzed adverse reactions, treatment efficacy, median progression-free survival (mPFS), and the relationship between drug blood concentration and selected clinical parameters.Results:In the entire cohort, the Cmin and Cmax of ripretinib were 467 ± 360 μg/L and 986 ± 493 μg/L, respectively. Notably, female patients and individuals in the high-dose group exhibited significantly higher values for both Cmin and Cmax (both P<0.05). However, variations in drug concentrations associated with the line of ripretinib therapy, treatment efficacy, disease progression, and presence of selected specific genetic mutations were not significantly associated with values of Cmin and Cmax ( P>0.05). Among the 79 patients with advanced GISTs receiving ripretinib, reported adverse reactions included alopecia (53, 67.09%), hand–foot syndrome (24, 30.38%), fatigue (22, 27.85%), and myalgia (21, 26.58%). Two patients (2.53%) had grade III complications, both classified as hand–foot syndrome. The correlation between Cmax and adverse reactions was not statistically significant ( P > 0.05). By the time of the latest follow-up, five deaths (6.3%) had occurred within the cohort. The mPFS for the group was 16.3 months, with a mPFS of 14.4 months for those receiving standard dosage and 7.0 months for those receiving escalating dosage. Among the 65 patients treated with standard doses of ripretinib, those with Cmin exceeding a threshold of 450 μg/L exhibited a significantly longer mPFS (18.0 months vs.13.7 months; P < 0.05). Conclusion:In China, patients with advanced GISTs exhibit a notable tolerance to ripretinib, with no evidence for a correlation between adverse reactions and Cmax for the drug. Additionally, a Cmin exceeding 450 μg/L may be associated with an extended mPFS.

OBJECTIVE To establish a method for concentration determination of caffeine and its three metabolites， theophylline， paraxanthine and theobromine in urine， and apply it in clinical practice. METHODS Using caffeine-13C3-d3 as internal standard （IS）， and the urine samples were protein precipitated with acetonitrile； HPLC-MS/MS method was adopted to determine the concentrations of caffeine and its three metabolites. The determination was performed on Waters ACQUITY UPLC® BEH HILIC column with mobile phase consisting of 60 mmol/L ammonium acetate （A）-acetonitrile （B） （gradient elution） at the flow rate of 0.5 mL/min. The column temperature was set at 38 ℃ ， and the sample size was 2 μL. The electrospray ionization detection was operated in a positive mode by multiple reaction monitoring. The detection ions for quantitative analysis were m/z 195.1→110.0 for caffeine， m/z 181.1→124.0 for theophylline， m/z 181.1→124.0 for paraxanthine， m/z 181.1→138.0 for theobromine， and m/z 198.1→ 140.1 for IS. The above method was used to determine the concentrations of caffeine and its three metabolites in the urine of 19 infants with apnea of prematurity （AOP）. RESULTS The linear ranges of mass concentration of caffeine， theophylline， paraxanthin and theobromine were 0.200-200， 0.050-50.0，0.050 0-50.0， and 0.100-100 μg/mL， respectively. The lower limits of quantification were 0.200， 0.050， 0.050 and 0.100 μg/mL （r＞0.990）， respectively. RSDs of intra-day and intra- day precision were not above 10.37%， and matrix factors were 85.68%-109.90%； extraction recoveries were 93.53%-109.40% （RSD≤15%）， and RSDs of stability tests were all lower than 15%. The concentrations of caffeine and its three metabolites in the urine of 19 cases were （27.346±7.951）， （0.351±0.223）， （0.428±0.395） and （0.472±0.374） μg/mL， respectively. CONCLUSIONS The established HPLC-MS/MS method is simple， sensitive and can be used for the determination of caffeine and its three metabolites in urine samples of AOP.