Objective To explore the characteristics of fluid flow within loaded osteons under different boundary conditions.Methods The COMSOL Multiphysics software was used to establish a three-dimensional(3D)finite element model of osteons with different boundary conditions,and the variation rules of pore pressure and flow velocity of osteons under different inner wall pulsating blood pressures and outer wall elastic constraint conditions were analyzed.Results As the pulsatile blood pressure inside the osteon increased from 0 mmHg(1 mmHg=0.133 kPa)to 300 mmHg,the peak pore pressure within the osteon correspondingly increased from 26 kPa to 68 kPa.As the elastic constraint on the outer wall of osteons changed from being completely elastic to completely constrained,the peak pore pressure within osteons increased from 15 kPa to 26 kPa,and the peak flow velocity increased from 0.04 um/s to 0.07 um/s.Conclusions This study reveals the influence laws of changes in boundary conditions such as the pulsatile blood pressure on the inner wall and the elastic constraint on the outer wall of osteons on fluid flow characteristics within loaded osteons.These findings are conducive to a deeper understanding of the mechanical response mechanisms of bone tissues in both physiological and pathological states,and provide an important theoretical basrs for further researches on bone mechanotransduction.

Objective:To compare the efficacy and safety of the gastrointestinal endoscopic super minimally invasive surgery (eSMIS) and the laparoscopic minimally invasive procedure (LS) for the treatment of gastric glomus tumors(GGT).Methods:This study retrospectively included 15 patients with GGT who underwent eSMIS at the First Medical Center of Chinese PLA General Hospital from May 2014 to May 2024. Data on demographic characteristics, surgical indexes, efficacy evaluation indexes, postoperative medical disposition, health economics indexes and postoperative laboratory indexes were collected and analyzed, the patients were followed up for survival outcomes and the postoperative quality of life, efficacy and safety of the two groups were compared.Results:The amount of bleeding in the eSMIS group was lower than that in the LS group: 1.25 (0, 3.75) ml vs. 41.56 (10.00, 50.00) ml, and the surgical cost in the eSMIS group was lower than that in the LS group: 10 792.87 (8 424.90, 12 730.30) yuan vs. 21 773.06 (19 940.60, 24 843.10) yuan, there were statistical differences ( P<0.05). The surgical efficacy, postoperative laboratory indicators and medical treatment convenience between the two groups had no statistical differences ( P>0.05). Conclusions:In the choice of surgical procedures for the treatment of GGT, eSMIS is superior to LS in terms of bleeding and surgical cost, and not inferior to LS in other indicators. This suggested that the treatment of GGT with eSMIS is feasible, safe and effective.

In recent years,the prevalence of overweight/obesity in solid organ transplant recipients has been rising rapidly.Clinical research evidence on obesity in solid organ transplant recipients has been increasing,but there is a lack of standardized diagnostic and treatment guidelines and comprehensive management pathways to guide clinical practice.Based on this,the Expert Consensus on Weight Management in Overweight or Obese Adult Solid Organ Transplant Recipients(2025 Edition)was organized and written by experts from the Diabetes Professional Committee of the Chinese Research Hospital Association.This consensus mainly provides recommendations on the epidemiological data,diagnostic criteria,screening and assessment methods,management pathways,and intervention strategies for overweight/obesity in solid organ transplant recipients.It aims to further improve the management level of medical workers engaged in the whole process of organ transplantation for the population with overweight/obesity combined with solid organ transplantation,standardize clinical diagnosis and treatment,improve patient prognosis,and enhance quality of life.

Objective To explore the characteristics of fluid flow within loaded osteons under different boundary conditions.Methods The COMSOL Multiphysics software was used to establish a three-dimensional(3D)finite element model of osteons with different boundary conditions,and the variation rules of pore pressure and flow velocity of osteons under different inner wall pulsating blood pressures and outer wall elastic constraint conditions were analyzed.Results As the pulsatile blood pressure inside the osteon increased from 0 mmHg(1 mmHg=0.133 kPa)to 300 mmHg,the peak pore pressure within the osteon correspondingly increased from 26 kPa to 68 kPa.As the elastic constraint on the outer wall of osteons changed from being completely elastic to completely constrained,the peak pore pressure within osteons increased from 15 kPa to 26 kPa,and the peak flow velocity increased from 0.04 um/s to 0.07 um/s.Conclusions This study reveals the influence laws of changes in boundary conditions such as the pulsatile blood pressure on the inner wall and the elastic constraint on the outer wall of osteons on fluid flow characteristics within loaded osteons.These findings are conducive to a deeper understanding of the mechanical response mechanisms of bone tissues in both physiological and pathological states,and provide an important theoretical basrs for further researches on bone mechanotransduction.

Objective To summarize the magnetic resonance imaging(MRI)features of spinal adnexal tuberculosis in order to improve its early diagnosis.Methods Totally 21 spinal adnexal tuberculosis patients confirmed at some hospital from January 2019 to October 2023 had their clinical data and MRI images analyzed retrospectively to determine the basic clinical characteristics and MRI features.Results Of the 21 patients,8 ones had sudden lower extremity weakness and pyramidal tract signs,and the remaining 13 ones had no significant symptoms of neurologic deficit.The lesion involvement ranged from C4 to L5 vertebrae,with the involvement of lumbar segments in 13 cases,thoracic segments in 6 cases and cervical segments in 2 cases.There were 15 cases that had tuberculosis involving in only a single spinal adnexa and peripheral soft tissue,4 cases in 2 vertebrae and 2 cases in 3 vertebrae.There were 9 cases involving in pedicles,8 cases in vertebral plates and some cases involving in sphenoid process,transverse process or facet joints.The MRI features of spinal adnexal tuberculosis included the tuberculosis-infected bone showing slightly low signals on T1WI while slightly high signals on T2WI,edge enhancement by enhanced scan and edema and abscess of paravertebral soft tissue and intra-and extradural tuberculous abscess displayed clearly by the fat suppression and diffusion weighted imaging sequences of T2WI.Conclusion MRI effectively detects the abnormal signs of bone and soft tissue of spinal adnexal tuberculosis.The MRI findings of spinal adnexal tuberculosis are of characteristics,and MRI can be used as the first choice for imaging examination and differential diagnosis to realize early detection of spinal adnexal tuberculosis.[Chinese Medical Equipment Journal,2025,46(1):55-59]

Objective:To compare the efficacy and safety of the gastrointestinal endoscopic super minimally invasive surgery (eSMIS) and the laparoscopic minimally invasive procedure (LS) for the treatment of gastric glomus tumors(GGT).Methods:This study retrospectively included 15 patients with GGT who underwent eSMIS at the First Medical Center of Chinese PLA General Hospital from May 2014 to May 2024. Data on demographic characteristics, surgical indexes, efficacy evaluation indexes, postoperative medical disposition, health economics indexes and postoperative laboratory indexes were collected and analyzed, the patients were followed up for survival outcomes and the postoperative quality of life, efficacy and safety of the two groups were compared.Results:The amount of bleeding in the eSMIS group was lower than that in the LS group: 1.25 (0, 3.75) ml vs. 41.56 (10.00, 50.00) ml, and the surgical cost in the eSMIS group was lower than that in the LS group: 10 792.87 (8 424.90, 12 730.30) yuan vs. 21 773.06 (19 940.60, 24 843.10) yuan, there were statistical differences ( P<0.05). The surgical efficacy, postoperative laboratory indicators and medical treatment convenience between the two groups had no statistical differences ( P>0.05). Conclusions:In the choice of surgical procedures for the treatment of GGT, eSMIS is superior to LS in terms of bleeding and surgical cost, and not inferior to LS in other indicators. This suggested that the treatment of GGT with eSMIS is feasible, safe and effective.

In recent years,the prevalence of overweight/obesity in solid organ transplant recipients has been rising rapidly.Clinical research evidence on obesity in solid organ transplant recipients has been increasing,but there is a lack of standardized diagnostic and treatment guidelines and comprehensive management pathways to guide clinical practice.Based on this,the Expert Consensus on Weight Management in Overweight or Obese Adult Solid Organ Transplant Recipients(2025 Edition)was organized and written by experts from the Diabetes Professional Committee of the Chinese Research Hospital Association.This consensus mainly provides recommendations on the epidemiological data,diagnostic criteria,screening and assessment methods,management pathways,and intervention strategies for overweight/obesity in solid organ transplant recipients.It aims to further improve the management level of medical workers engaged in the whole process of organ transplantation for the population with overweight/obesity combined with solid organ transplantation,standardize clinical diagnosis and treatment,improve patient prognosis,and enhance quality of life.

Objective:To investigate the effectiveness and safety of secondary cytoreductive surgery (SCS) in patients with platinum-sensitive recurrent epithelial ovarian cancer who progressed after first-line maintenance therapy with poly adenosine diphosphate ribose polymerase inhibitor (PARPi).Methods:Clinical pathological data and prognostic information were retrospectively collected from 30 ovarian cancer patients who underwent SCS between January 2018 and June 2024. The Kaplan-Meier method was used to analyze the second progression-free survival (PFS2) time and 3-year overall survival (OS) rate.Results:(1) Primary treatment: the median age at diagnosis was 51.3 years. A total of 40% (12/30) patients underwent primary debulking surgery with an expectation of achieving no gross residual disease (R0), while 60% (18/30) received neoadjuvant chemotherapy and interval debulking surgery. Optimal cytoreduction was achieved in 93% (28/30) of patients. BRCA1/2 gene testing was performed in 29 patients (testing rate 97%, 29/30), identifying 11 BRCA-mutated (37%, 11/30) and 18 BRCA wild-type (60%, 18/30) patients. The median duration of PARPi maintenance therapy among the 30 patients was 11.9 months; patients with BRCA gene mutations had a median duration of 19.2 months, while those with BRCA wild-type had a median duration of 10.1 months. (2) Secondary surgery: pathologically confirmed recurrence patterns, single lesion in 9 patients (30%, 9/30), oligo-lesion (2 lesions) in 3 patients (10%, 3/30), and multi-lesion (≥3 lesions) in 18 patients (60%, 18/30). Among the 30 patients, optimal cytoreduction was achieved in 97% (29/30) of SCS patients, with suboptimal cytoreduction in 1 patient (3%, 1/30). Adjuvant chemotherapy included platinum+paclitaxel in 24 (80%, 24/30) patients and platinum+liposomal doxorubicin in 6 (20%, 6/30) patients. PARPi re-treatment was administered to 17 patients (57%, 17/30) after chemotherapy. (3) Efficacy and safety: as of the follow-up cutoff in June 2024, the median follow-up time was 28.0 months. A total of 19 (63%, 19/30) patients experienced the next recurrence. The median PFS2 time after SCS was 18.5 months. Recurrence occurred in 7 BRCA-mutated and 12 BRCA gene wild-type patients. Median PFS2 time was significantly longer in BRCA-mutated patients compared to BRCA wild-type patients (25.7 vs 14.1 months; P=0.028). Three deaths occurred during follow-up, resulting in a 3-year OS rate of 90%. Among the 30 patients, postoperative complications occurred in 4 patients (13%, 4/30). One patient developed a ureteral fistula on 7 days post-SCS requiring ureteral stenting, and one patient was transferred to the intensive care unit on 1 day post-SCS due to hypovolemic shock. No deaths occurred within 30 days after SCS. Conclusion:For platinum-sensitive recurrent ovarian cancer patients progressed after first-line PARPi maintenance therapy who are anticipated to achieve R0 resection, SCS represents a safe and effective second-line treatment option.

Objective:To compare the clinical outcomes of APTT-HTO and Biplanar-high tibial osteotomy (Biplanar-HTO) in treating medial compartment knee osteoarthritis.Methods:A non-randomized controlled trial was conducted. Twenty-eight patients with medial compartment knee osteoarthritis who underwent HTO at the Affiliated Hospital of Guizhou Medical University from August 2021 to January 2022 were enrolled. Based on the patients' surgical preference, they were assigned to either the APTT-HTO group ( n=15) or the Biplanar-HTO group ( n=13), followed up for 12 months postoperatively. Postoperative pain Visual Analog Scale (VAS) scores, Knee Society Score (KSS), changes in patellar height (Caton-Deschamps Index, CDI), and posterior tibial slope (PTS) were compared between the two groups. Results:The APTT-HTO group demonstrated a significantly shorter operative time (64.13±4.85 min) compared to the Biplanar-HTO group (81.54±6.09 min) ( P<0.05). No significant differences were observed in intraoperative correction (APTT-HTO: 12.19°±4.85°; Biplanar-HTO: 11.23°±3.02°) or postoperative drainage volume (APTT-HTO: 47.00±13.79 ml; Biplanar-HTO: 47.00±11.17 ml) ( P>0.05). At 12-month follow-up (APTT-HTO: 13.93±2.05 months; Biplanar-HTO: 14.08±2.14 months; no dropouts), the APTT-HTO group showed no significant changes in PTS (9.32°±2.04° vs. preoperative 8.82°±1.89°) or CDI (0.95±0.11 vs. 0.98±0.11) ( P>0.05), while the Biplanar-HTO group exhibited increased PTS (13.27°±1.99° vs. 8.86°±1.99°) and decreased CDI (0.64±0.10 vs. 0.97±0.16) ( P<0.05). The differences in PTS and CDI between the APTT HTO group and the Biplanar HTO group at 12 months after surgery were statistically significant ( P<0.05). Both groups achieved significant clinical improvements: in APTT-HTO, VAS decreased (preopreation 4.80±1.01 to postopreation 1.06±0.88), KSS knee scores increased (47.67±12.03 to 87.93±4.38), and KSS function scores improved (48.00±4.93 to 67.00±5.91); in Biplanar-HTO, VAS reduced (5.08±1.12 to 1.85±1.14), KSS knee scores rose (46.85±11.48 to 85.85±5.11), and KSS function scores enhanced (46.92±5.60 to 66.92±5.22) ( P<0.05 for all). Complications included soft tissue irritation (2 cases per group), with Biplanar-HTO additionally reporting deep vein thrombosis (1 case), hinge fracture (1 case), and patella baja (3 cases). Conclusions:Both APTT-HTO and Biplanar-HTO effectively treat medial compartment knee osteoarthritis. However, APTT-HTO outperforms Biplanar-HTO in preventing postoperative patella infera and minimizing alterations in PTS.

As new evidence emerges, treatment strategies toward the functional cure of chronic hepatitis B are evolving. In 2019, a panel of national hepatologists published a Consensus Statement on the functional cure of chronic hepatitis B. Currently, an international group of hepatologists has been assembled to evaluate research since the publication of the original consensus, and to collaboratively develop the updated statements. The 2.0 Consensus was aimed to update the original consensus with the latest available studies, and provide a comprehensive overview of the current relevant scientific literatures regarding functional cure of hepatitis B, with a particular focus on issues that are not yet fully clarified. These cover the definition of functional cure of hepatitis B, its mechanisms and barriers, the effective strategies and treatment roadmap to achieve this endpoint, in particular new surrogate biomarkers used to measure efficacy or to predict response, and the appropriate approach to pursuing a functional cure in special populations, the development of emerging antivirals and immunomodulators with potential for curing hepatitis B. The statements are primarily intended to offer international guidance for clinicians in their practice to enhance the functional cure rate of chronic hepatitis B.