Co-infection of hepatitis D virus （HDV） and hepatitis B virus （HBV） is the most severe form of viral hepatitis and is associated with accelerated progression of liver disease and a significant increase in the risk of liver cirrhosis and hepatocellular carcinoma. Nucleo（s）tide analogues for HBV treatment are ineffective against HDV infection， necessitating the urgent need for developing specific and effective antiviral therapies for HDV. In recent years， significant advances have been made in the research and development of specific antiviral drugs against HDV， including entry inhibitors targeting viral entry （Bulevirtide） and monoclonal antibody drugs （Libevitug）， which bring ground-breaking advances in the treatment of HDV infection. This article briefly reviews the latest research advances in therapeutic drugs for HDV， introduces the mechanism of action and clinical research data of new drugs recently approved for the treatment of HDV， and discusses the challenges that need to be solved in the field of HDV treatment， in order to provide a reference for understanding the current status of hepatitis D treatment.

Objective:To evaluate the clinical efficacy of minimally invasive Chevron-Akin osteotomy (MICA) in the treatment of mild to moderate hallux valgus without addressing the proximal projection.Methods:A retrospective analysis was conducted on 31 patients with unilateral mild to moderate hallux valgus who underwent third-generation MICA surgery at Shanghai Sixth People's Hospital from January 2019 to June 2020. Among these patients, 2 were male and 29 were female, with an average age of 41.13±7.8 years (range: 21-64 years). A total of 12 patients had mild hallux valgus, while 19 patients had moderate hallux valgus. The average body mass index (BMI) was 24.37±1.28 kg/m 2 (range: 22.06-26.13 kg/m 2). Preoperative and postoperative foot X-rays were taken at multiple time points, including 1 day, 1.5 months, 3 months, 12 months, and 24 months after surgery. These X-rays were used to assess the medial eminence width (MEW) of the first metatarsal head, the proximal medial projection width (PMRW) of the first metatarsal, the hallux valgus angle (HVA), the intermetatarsal angle (IMA), and the distal metatarsal articular angle (DMAA). Functional improvements and pain relief were evaluated using the American Orthopaedic Foot and Ankle Society (AOFAS) forefoot score and the visual analogue scale (VAS). Results:All 31 patients completed an average follow-up period of 25.67±2.35 months (range: 24-31 months). The average operation time was 39.55±7.31 minutes (range: 32-46 minutes). The number of intraoperative fluoroscopy exposures averaged 16.23±2.38 times (range: 13-21 times). At the two-year follow-up, significant improvements were observed in all measured parameters when compared to preoperative values ( P<0.05). The HVA decreased from 35.18°±3.59° before surgery to 10.93°±0.90° after surgery. The IMA was reduced from 11.47°±0.85° to 6.94°±0.65°, and the DMAA decreased from 15.24°±1.13° to 4.31°±0.56°. The MEW decreased from 4.07±0.70 mm to 0.13±0.11 mm. The PMRW, which was measured at one day postoperatively and at the two-year follow-up, decreased from 3.44±0.66 mm to 0.19±0.11 mm. Functional assessments also showed significant improvements ( P<0.05). The AOFAS forefoot score increased from 57.42±3.93 before surgery to 89.52±3.46 at the two-year follow-up. Pain levels, as assessed by the VAS, decreased from 5.68±1.11 preoperatively to 0.77±0.50 postoperatively. At the two-year follow-up, 97% of patients reported excellent satisfaction with the surgical outcome. During the follow-up period, complications included mild numbness around the wound in two cases, metatarsophalangeal joint stiffness in one case, and hallux valgus recurrence in one case, accounting for 3% of the cohort. Conclusion:Third-generation MICA without addressing the proximal projection is an effective procedure for correcting mild to moderate hallux valgus. This technique significantly improves foot function, reduces pain, and leads to high levels of patient satisfaction.

Objective:To evaluate the clinical efficacy of minimally invasive Chevron-Akin osteotomy (MICA) in the treatment of mild to moderate hallux valgus without addressing the proximal projection.Methods:A retrospective analysis was conducted on 31 patients with unilateral mild to moderate hallux valgus who underwent third-generation MICA surgery at Shanghai Sixth People's Hospital from January 2019 to June 2020. Among these patients, 2 were male and 29 were female, with an average age of 41.13±7.8 years (range: 21-64 years). A total of 12 patients had mild hallux valgus, while 19 patients had moderate hallux valgus. The average body mass index (BMI) was 24.37±1.28 kg/m 2 (range: 22.06-26.13 kg/m 2). Preoperative and postoperative foot X-rays were taken at multiple time points, including 1 day, 1.5 months, 3 months, 12 months, and 24 months after surgery. These X-rays were used to assess the medial eminence width (MEW) of the first metatarsal head, the proximal medial projection width (PMRW) of the first metatarsal, the hallux valgus angle (HVA), the intermetatarsal angle (IMA), and the distal metatarsal articular angle (DMAA). Functional improvements and pain relief were evaluated using the American Orthopaedic Foot and Ankle Society (AOFAS) forefoot score and the visual analogue scale (VAS). Results:All 31 patients completed an average follow-up period of 25.67±2.35 months (range: 24-31 months). The average operation time was 39.55±7.31 minutes (range: 32-46 minutes). The number of intraoperative fluoroscopy exposures averaged 16.23±2.38 times (range: 13-21 times). At the two-year follow-up, significant improvements were observed in all measured parameters when compared to preoperative values ( P<0.05). The HVA decreased from 35.18°±3.59° before surgery to 10.93°±0.90° after surgery. The IMA was reduced from 11.47°±0.85° to 6.94°±0.65°, and the DMAA decreased from 15.24°±1.13° to 4.31°±0.56°. The MEW decreased from 4.07±0.70 mm to 0.13±0.11 mm. The PMRW, which was measured at one day postoperatively and at the two-year follow-up, decreased from 3.44±0.66 mm to 0.19±0.11 mm. Functional assessments also showed significant improvements ( P<0.05). The AOFAS forefoot score increased from 57.42±3.93 before surgery to 89.52±3.46 at the two-year follow-up. Pain levels, as assessed by the VAS, decreased from 5.68±1.11 preoperatively to 0.77±0.50 postoperatively. At the two-year follow-up, 97% of patients reported excellent satisfaction with the surgical outcome. During the follow-up period, complications included mild numbness around the wound in two cases, metatarsophalangeal joint stiffness in one case, and hallux valgus recurrence in one case, accounting for 3% of the cohort. Conclusion:Third-generation MICA without addressing the proximal projection is an effective procedure for correcting mild to moderate hallux valgus. This technique significantly improves foot function, reduces pain, and leads to high levels of patient satisfaction.

BACKGROUND:The plantarflexor weakness is a common muscle defect in patients with spastic cerebral palsy and Charcot-Marie-Tooth,which clinically manifests abnormal gaits,and the relationship between plantarflexor weakness and abnormal gaits is unclear. OBJECTIVE:To explore the biomechanical behavior of the lower limb under the action of a single factor of plantarflexor weakness to reveal the mechanism of abnormal gait induced by plantarflexor weakness and to provide guidance for the rehabilitation training of patients with plantarflexor weakness. METHODS:A predictive framework of musculoskeletal multibody dynamics in the sagittal plane was established based on OpenSim Moco to predict lower limb joint angles and muscle activation changes during walking in normal subjects.The validity of the framework was verified by combining the inverse kinematics and electromyogram activation time of the experimental data.Reduced isometric muscle forces were used to model plantarflexor weakness and to compare predicted lower extremity joint angles,joint moments,and muscle energy expenditure with normal subjects to analyze the effects of plantarflexor weakness on lower extremity biomechanics. RESULTS AND CONCLUSION:(1)The Moco-based prediction framework realistically predicted the biomechanical changes of the lower limbs during walking in normal subjects(joint angles:normalized correlation coefficient≥0.73,root mean square error≤7.10°).(2)The musculoskeletal model used a small stride support phase to increase the"heel-walking"gait during plantarflexor weakness.When the plantarflexor weakness reached 80%,the muscle energy expenditure was 5.691 4 J/kg/m,and the maximum activation levels of the gastrocnemius and soleus muscles were 0.72 and 0.53,which might cause the plantarflexor weakness patients to be more prone to fatigue when walking.(3)Muscle energy expenditure was significantly higher when the weakness of plantarflexors exceeded 40%,and the joint angles and moments of the lower limbs deteriorated significantly when the weakness of plantarflexors exceeded 60%,suggesting that there may be a"threshold"for the effect of plantarflexor weakness on gait,which may correspond to the point at which health care professionals should intervene in the clinical setting.

Severe hallux valgus, a triplanar foot deformity significantly impairing patients' quality of life, has witnessed progressive advancements in surgical management. This article systematically reviews the therapeutic progress through literature analysis, encompassing modifications of conventional surgical procedures and applications of novel techniques and innovative biomaterials. A critical analysis and discussion of these technological advancements and future developmental directions are presented to provide valuable insights and references for clinical management of severe hallux valgus.
Humans ; Hallux Valgus/surgery* ; Osteotomy/methods* ; Bone Transplantation/methods* ; Orthopedic Procedures/methods*

Objective To explore the predictive value of serum angiopoietin-like protein 4(ANGPTL4)and C-X3-C motif chemokine ligand 1(CX3CL1)for poor prognosis in patients with acute cerebral infarction(ACI)undergoing intravascular intervention therapy.Methods A total of 180 ACI patients undergoing endovascular intervention in our department from January 2021 to February 2024 were prospectively recruited and served as the study group,and according to the prognosis,they were divided into a good prognosis group(97 cases)and a poor prognosis group(83 cases).Another 180 individuals who taking healthy checkup in the same period served as the control group.The levels of ANGPTL4 and CX3CL1 were measured by ELISA.Results The ser-um ANGPTL4 level was significantly lower while that of CX3CL1 was obviously higher in the study group than the control group(P＜0.01).The poor prognosis group had notably longer time from onset to admission and larger proportions of having NIHSS score at admission≥15 and an-terior circulation cerebral infarction,lower serum ANGPTL4 level and higher CX3CL1 level when compared with the good prognosis group(P＜0.01).Multivariate logistic regression analysis showed that time from onset to admission,NIHSS score at admission,location of cerebral infarc-tion,and CX3CL1 were risk factors,and ANGPTL4 was a protective factor for poor prognosis in ACI patients(P＜0.05,P＜0.01).ROC curve analysis showed that the AUC value of serum ANGPTL4,CX3CL1 and their combinzation in predicting poor prognosis in ACI patients was 0.816(95％CI:0.755-0.877),0.860(95％CI:0.791-0.930),and 0.901(95％CI:0.846-0.956),respectively,and the combined indicators showed better predictive value than each indicator alone(Z=2.716,Z=2.732,P＜0.05).Conclusion Serum ANGPTL4 and CX3CL1 levels are abnormal-ly expressed in ACI patients after intravascular intervention therapy,and are related to prognosis.Their combined detection can improve the predictive value for poor prognosis.

The in-depth research of artificial intelligence in the medical field has greatly improved the workflow and diagnostic ability of diagnostic radiology.This article focuses on artificial intelligence technology in the field of interventional medicine,and enumerates its potential application scenarios,including improving image analysis capabilities to assist diagnosis and predict treatment response.It also describes the challenges that need to be overcome for practical application.Finally,with the continuous development of artificial intelligence in interventional medicine,artificial intelligence will further optimize the channels of interventional medicine and bring revolutionary changes to the clinical practice of interventional medicine.

Objective:To evaluate the safety and efficacy of early precise lower limb weight-bearing functional rehabilitation after open reduction and internal fixation of ankle fractures.Methods:A restropective multi-center study was conducted to enroll the eligible 120 patients with malleolar fracture who received the same surgical treatment from March 2023 to December 2023 at the trauma centers in 7 tertiary hospitals according to the inclusion criteria. They were assigned into a study group ( n=60) for precise lower limb weight-bearing functional rehabilitation with the assistance of intelligent lower limb walking rehabilitation crutches and a control group ( n=60) for conventional weight-bearing functional rehabilitation which was gradually increased according to their own feelings under the protection of a walking boot. All the 60 patients in the study group completed their final follow-ups. They were 25 males and 35 females, with an age of (43.8±16.6) years and a body mass index of (25.3±2.3) kg/m 2. Only 51 patients in the control group completed their final follow-ups. They were 27 males and 24 females, with an age of (45.1±16.4) years and a body mass index of (24.7±2.3) kg/m 2. When their incisions healed and their sutures were removed 2 weeks after operation, the patients were guided to start lower limb weight-bearing functional rehabilitation, and exercises for foot and ankle joint mobility and lower limb muscles. The end point of follow-up was 12 weeks after operation. The 2 groups were compared in terms of the crutch-off rates, thigh circumferences, calf circumferences, dorsiflexions, plantarflexions, ankle swellings, American Orthopaedic Foot & Ankle Society (AOFAS) ankle-hindfoot scores, and visual analog scale (VAS) pain scores at 6 and 12 weeks after operation. The complications were also recorded in the 2 groups. Results:No statistically significant differences were observed in the baseline characteristics between the 2 groups, indicating comparability ( P>0.05). At 6 and 12 weeks after operation, the crutch-off rates [41.7% (25/60) and 100.0% (60/60)], dorsiflexions (69.3%±21.6% and 82.9%±26.3%) and AOFAS ankle-hindfoot scores [(68.5±7.6) points and (96.9±3.7) points] in the study group were significantly better than those in the control group [13.7% (7/51) and 39.2% (20/51), 61.5%±16.5% and 72.0%±14.3%, (61.9±9.3) points and (90.1±7.2) points] ( P<0.05). At 6 weeks after operation, the thigh circumference (97.4%±1.9%), calf circumference (97.3%±1.9%), and plantarflexion (76.6%±19.8%) in the study group were significantly higher than those in the control group (95.9%±2.5%, 94.6%±3.2%, and 63.9%±16.9%) ( P<0.05). There were no significant differences between the 2 groups in ankle swelling at 6 or 12 weeks after operation, or thigh or calf circumference, plantarflexion, or VAS pain score at 12 weeks after operation ( P>0.05). No wound complications, secondary fracture displacement, or loosening of internal fixation occurred in either group during the follow-up period. There were no cases of nonunion or delayed union. Conclusions:Early lower limb weight-bearing functional rehabilitation after open reduction and internal fixation of ankle fractures demonstrates good safety. Precise weight-bearing rehabilitation accelerates functional recovery of the ankle, enabling earlier return to normal daily activities.

Objective To explore the predictive value of serum angiopoietin-like protein 4(ANGPTL4)and C-X3-C motif chemokine ligand 1(CX3CL1)for poor prognosis in patients with acute cerebral infarction(ACI)undergoing intravascular intervention therapy.Methods A total of 180 ACI patients undergoing endovascular intervention in our department from January 2021 to February 2024 were prospectively recruited and served as the study group,and according to the prognosis,they were divided into a good prognosis group(97 cases)and a poor prognosis group(83 cases).Another 180 individuals who taking healthy checkup in the same period served as the control group.The levels of ANGPTL4 and CX3CL1 were measured by ELISA.Results The ser-um ANGPTL4 level was significantly lower while that of CX3CL1 was obviously higher in the study group than the control group(P＜0.01).The poor prognosis group had notably longer time from onset to admission and larger proportions of having NIHSS score at admission≥15 and an-terior circulation cerebral infarction,lower serum ANGPTL4 level and higher CX3CL1 level when compared with the good prognosis group(P＜0.01).Multivariate logistic regression analysis showed that time from onset to admission,NIHSS score at admission,location of cerebral infarc-tion,and CX3CL1 were risk factors,and ANGPTL4 was a protective factor for poor prognosis in ACI patients(P＜0.05,P＜0.01).ROC curve analysis showed that the AUC value of serum ANGPTL4,CX3CL1 and their combinzation in predicting poor prognosis in ACI patients was 0.816(95％CI:0.755-0.877),0.860(95％CI:0.791-0.930),and 0.901(95％CI:0.846-0.956),respectively,and the combined indicators showed better predictive value than each indicator alone(Z=2.716,Z=2.732,P＜0.05).Conclusion Serum ANGPTL4 and CX3CL1 levels are abnormal-ly expressed in ACI patients after intravascular intervention therapy,and are related to prognosis.Their combined detection can improve the predictive value for poor prognosis.

Cervical spinal cord injury without fracture-dislocation (CSCIWFD) is referred to as a special type of cervical spinal cord injury characterized by traumatic spinal cord dysfunction and no significant bony structural abnormalities on imagines. Duo to the high risk of missed diagnosis during the initial consultation, CSCIWFD may lead to progressive neurological deterioration or even complete paralysis, severely impacting patients′ prognosis. Currently, there are no established consensuses over the diagnosis and treatment of CSCIWFD, such as the lack of evidence-based standards for indications of non-surgical treatment and risk of secondary neurological injury, as well as debates over the optimal timing for surgical intervention and indications for different surgical approaches. To address these issues, the Spine Trauma Group of the Orthopedic Branch of the Chinese Medical Doctor Association organized experts in the relevant fields to formulate Diagnosis and treatment guideline for acute cervical spinal cord injury without fracture- dislocation in adults ( version 2025) . Based on evidence-based medicine and the principles of scientific rigor and clinical applicability, the guidelines proposed 11 recommendations covering terminology, diagnosis, evaluation treatment, and rehabilitation, etc., aiming to standardize the management of CSCIWFD.