BACKGROUND:The reasonable implantation range of femoral prosthesis in unicompartmental knee arthroplasty in patients with osteoporosis has not been investigated,and previous studies have often been based on unicompartmental knee arthroplasty models in normal bone,with fewer mechanical studies in models with non-normal bone.Complications after unicompartmental knee arthroplasty have been shown to be highly associated with osteoporosis. OBJECTIVE:To analyze the biomechanical effects of the coronal inclination of the Sled fixed platform femoral prosthesis on unicompartmental knee arthroplasty in patients with osteoporosis and to find the correlation between osteoporosis and mid-and long-term complications after unicompartmental knee arthroplasty. METHODS:Based on the digital imaging technology to obtain the data of the knee joint and prosthesis,a normal bone knee model is then created by using specialized software such as Mimics and Geomagic studio.Based on a validated normal bone knee model,an osteoporotic knee model was created by changing the material parameters.Totally 14 unicompartmental knee arthroplasty finite element models were created using Sled fixed platform femoral prosthesis:standard position(0°),varus and valgus angles:3°,6°,9° in the normal bone and osteoporosis groups.Stress changes on the surface of polyethylene liner,cancellous bone under tibial prosthesis,and cortical bone were calculated and analyzed in all unicompartmental knee arthroplasty models. RESULTS AND CONCLUSION:(1)In the osteoporotic models,the high stress values of the polyethylene liner surface and the cancellous bone under the tibial prosthesis increased with the increase of the tilt angle of the femoral prosthesis,and the high stress values of the cortical bone surface under the tibial prosthesis increased with the increase of the prosthesis valgus angles and decreased with the increase of the varus angles.(2)For the polyethylene liner surface as well as the subcortical bone surface of the tibial prosthesis,the high stress values of the models for each inclination angle in the osteoporosis group were greater than those of the corresponding models in the normal bone group.For the surface of the cancellous bone under the tibial prosthesis,the high stress values of the tilt angle models of the osteoporosis groups were smaller than those of the normal bone groups.(3)Osteoporosis may cause biomechanical abnormalities in the internal structures of the knee after unicondylar replacement,increasing the potential risk of postoperative aseptic loosening of the prosthesis and periprosthetic fractures.Varus and valgus of the femoral prosthesis in the coronal plane should be avoided as much as possible when performing medial unicompartmental knee arthroplasty with a Sled fixation platform in osteoporotic knees.

Objective To assess the potential role of disulfidptosis-related genes (DRGs) in pan-cancer on prognosis and immunity on the basis of bioinformatics approaches. Methods Pan-cancer RNA-seq data, mutation profiles, clinical information, TMB, MSI, stemness scores, and tumor and immune microenvironment data contained in TCGA and various open-source online databases, and multi-group R-language algorithms were used for comprehensive analysis. The expression levels of DRGs at the cellular level were experimentally validated using qPCR. Results LRPPRC, NCKAP1, NDUFS1, and NUBPL had a better prognosis in renal clear cell carcinoma (P<0.001), whereas SLC7A11, NCKAP1, and SLC3A2 had a worse prognosis in hepatocellular carcinoma (P<0.001). TME analysis showed that LRPPRC was negatively correlated with immune cells, stromal cells, and estimated scores in all tumor types. TMB analysis revealed the potential research value of DRGs for PD-1/PD-L1 therapy in pan-cancer. Drug sensitivity analysis showed that SLC7A11 (r=0.454), SLC3A2 (r=0.366), and NCKAP1 (r=0.455) were significantly associated with Kahalide F (P<0.01). Experimental validation demonstrated the overall higher expression levels of GYS1 and NCKAP1 than normal cells in lung adenocarcinoma, colon adenocarcinoma, esophageal squamous carcinoma, and hepatocellular carcinoma (P<0.05). Conclusion Pan-cancer analysis of DRGs indicates that DRGs may serve as important biomarkers for the diagnosis and prognosis of renal clear-cell carcinoma, lung adenocarcinoma, and hepatocellular carcinoma.

BACKGROUND:Multiple myeloma is one of the most common hematological malignancies,which is difficult to treat,prone to relapse,and resistant to drugs.The endogenous transport system of exosomes plays a communication role by affecting the exchange of functional components between cells.Among them,miRNA is more easily packaged in exosomes due to its small size,so it affects cell function in many ways and over a wide range.OBJECTIVE:To summarize the mechanism of exosomal miRNA in multiple myeloma and to propose potential targets.METHODS:The terms"multiple myeloma,bone marrow mesenchyml stem cell,fibroblasts,peripheral blood,complication,progression,drug resistance,exosomal miRNA"were used as English search terms in the PubMed database.The time frame of the search was from the inception to June 2024.After reading the titles and abstracts,we excluded irrelevant or repetitive literature,and finally included 81 papers for review.RESULTS AND CONCLUSION:(1)Multiple myeloma cells participate in multiple myeloma bone lesions by regulating the balance of osteogenic and osteoclast functions through various miRNA mediated exosomes,regulating erythrocyte calcium ion efflux channels to participate in the occurrence of hypercalcemia,promoting renal epithelial mesenchymal transition leading to renal fibrosis and renal dysfunction,and upregulating bone marrow-derived mononuclear suppressor cells to promote suppression of the immune microenvironment.In addition,miRNAs in the exosomes of multiple myeloma cells are also involved in the occurrence and development of immunotherapy resistance,as well as pathological processes such as angiogenesis,cell proliferation,and cell aging.(2)Both bone marrow mesenchymal stem cells and tumor-associated fibroblasts can affect the proliferation,metastasis,and apoptosis of multiple myeloma cells through exosomal miRNA,interfere with angiogenesis,and regulate the resistance of chemotherapy drugs.(3)Peripheral blood circulating exosomal miRNAs,as cutting-edge noninvasive biomarkers,can play a key role in judging the stage and progression of multiple myeloma disease,predicting patient formation and prognosis,and evaluating drug sensitivity and drug resistance.(4)Multiple myeloma exosomes long non-coding RNA,circular RNA,miRNA,mRNA and target gene can form different combinations,and the flexible construction of new biological axes and biomolecular networks is in line with the development concept of holistic medicine.(5)Exosome miRNA has great development potential as a therapeutic target for predictive biomarkers and new drug research and development.How to maximize the use of exosome miRNA and how to accelerate the clinical transformation of related scientific research results deserve further investigation.

Objective To investigate the impact of hyperuricemia on risk of deep vein thrombo-sis after joint replacement surgery.Methods A total of 953 patients undergoing joint replacement surgery were enrolled in this study.Among them,662 patients did not develop thrombosis postopera-tively(postoperative non-thrombosis group),while 291 patients developed thrombosis(postoperative thrombosis group).Data including gender,age,surgical procedure,body mass index,hypertension,coronary heart disease,diabetes,preoperative D-dimer positivity(≥0.5 mg/L),prothrombin time,prothrombin activity,international normalized ratio,activated partial thromboplastin time,fibrinogen,thrombin time,white blood cell count,red blood cell count,hemoglobin,hematocrit and platelet count were analyzed.Logistic regression analysis was used to identify independent risk factors for postoperative deep vein thrombosis.Results Univariate analysis showed that age,gender,surgical procedure(total knee arthroplasty),hypertension,diabetes,hyperuricemia,preoperative red blood cell count,preoperative hematocrit and preoperative D-dimer positivity were influencing factors for deep vein thrombosis after joint replacement surgery(P＜0.05).Logistic regression analysis re-vealedthat age(＞60 years),surgical procedure(total knee arthroplasty)and hyperuricemia were independent risk factors for postoperative deep vein thrombosis(P＜0.05).Conclusion Hyperuri-cemia is an independent risk factor for deep vein thrombosis after joint replacement surgery.

For differentiated thyroid cancer(DTC),which accounts for over 90%of cases and usually has a good prognosis,bone metastasis is not only the main threat to patients'survival and quality of life,but also a difficult problem that needs to be solved urgently in clinical diagnosis and treatment at this stage.Currently,existing clinical guidelines at home and abroad have not yet provided comprehensive management recommendations and precise diagnostic and treatment strategies for bone metastasis in thyroid cancer,making it imperative to promote the implementation of systematic and personalized diagnostic and treatment plans.Therefore,understanding epidemiological characteristics,clarifying the pathogenesis,mastering commonly used diagnostic techniques,exploring the latest treatment progress and evaluating treatment efficacy are crucial for the management of bone metastasis in thyroid cancer.In terms of pathogenesis,bone metastasis in thyroid cancer is mostly osteolytic,regulating the interaction between the bone microenvironment and cancer cells through the release of various cytokines,thus forming a vicious cycle of bone metastasis.Early identification of bone metastasis in DTC is crucial for improving patient prognosis.Its diagnosis can be based on clinical manifestations(such as bone pain,pathological fractures,spinal cord compression and hypercalcemia),laboratory tests(such as red blood cell and platelet counts,serum calcium/phosphorus and bone turnover markers),and imaging examination results[such as X-ray,computed tomography(CT),magnetic resonance imaging(MRI),single photon emission computed tomography(SPECT)/CT,and positron emission tomography(PET)/CT].The treatment of DTC bone metastasis involves multiple modalities,such as surgical treatment,interventional radiological treatment and external beam radiation therapy for local lesions,or the use of radionuclides(131I,89Sr and 153Sm),tyrosine kinase inhibitors(lenvatinib,sorafenib,etc.),or bone-targeting agents(including zoledronic acid,denosumab and 99Tc-methylene diphosphonate)to control the development of systemic bone metastasis.After the treatment of DTC bone metastasis,an efficacy evaluation should be conducted to guide subsequent treatment decisions and predict prognosis.With the increasingly mature multidisciplinary collaborative diagnosis and treatment model today,the diagnosis and treatment of bone metastatic DTC should include surgery,nuclear medicine,radiation and interventional therapy,external beam radiation therapy,medical oncology and clinical laboratory testing to ensure a comprehensive assessment of the patient's condition,make objective decisions on individualized treatment plans,and achieve the goal of preventing disease progression and alleviating symptoms.This article mainly reviewed the epidemiology,pathogenesis,diagnostic methods,treatment strategies and efficacy evaluation of bone metastasis,aiming to clarify the diagnostic and treatment thinking of bone metastasis in thyroid cancer,assist in clinical management,and provide useful references for clinicians to make rapid and accurate diagnosis and precise treatment decisions when facing patients with bone metastatic DTC.

At present,some new tongue manifestations with distinct characteristics and high clinical value have not yet gained widespread consensus,which is unfavorable to their research and promotion.This paper representatively explores four types of tongue texture manifestations(liver gall line,bulging vein tongue,concave tip tongue,convex surface tongue)and two types of tongue coating manifestations(cracked tongue coating,white saliva line)among them.It is found that the liver gall line manifests as dark stagnation of various forms on the tongue surface,indicating liver qi stagnation and blood stasis as well as heat-toxin accumulation;the bulging vein tongue is characterized by clearly raised blood vessels on the tongue surface,suggesting blood stasis due to yang deficiency or cold congelation;the concave tip tongue is characterized by a depressed tip,indicating an abnormal tongue frenulum or malnutrition of heart,lung,and kidney;the convex surface tongue features a broad and thick tongue body with an overall"convex"shape,which is observed in healthy individuals or suggests qi movement disorder and spleen and stomach stagnation;the cracked tongue coating is characterized by cracks only on the tongue coating,indicating qi deficiency with disordered fluid or yin consumption due to intense heat;the white saliva line presents as strip-like white foam bands on the tongue margin,suggesting liver qi stagnation and dampness stagnancy due to spleen deficiency.No consensus exists regarding issues such as naming and description,reflecting the necessity of expanding and standardizing the theory of tongue diagnosis.This paper aims to emphasize the value and standardization of such new tongue manifestations,enrich the theoretical system of tongue diagnosis in traditional Chinese medicine,and provide novel insights and reference basis for clinical syndrome differentiation.

The"2025 American Thyroid Association Management Guidelines for Adult Patients with Differentiated Thyroid Cancer"released by the American Thyroid Association(ATA)in 2025 include several important updates regarding nuclear medicine diagnosis and treatment for post-operative differentiated thyroid cancer(DTC).This article systematically reviewed advances in the nuclear medicine aspects of post-operative DTC assessment,decision-making for radioactive iodine therapy(RAIT),dynamic response evaluation,and follow-up strategies,guided by the 2025 ATA guidelines'DATA clinical management framework—Diagnosis,risk/benefit Assessment,Treatment decisions,and response Assessment.Building on the 2015 ATA guidelines and recent research evidence,the 2025 ATA guidelines emphasize the critical importance of post-operative response assessment(including serological and imaging evaluations)for the real-time refinement of risk stratification.It further subcategorizes recurrence risk from the original three categories(low,intermediate,high)to four categories(low,low-intermediate,intermediate-high and high)to more accurately predict the risk of structural recurrence.Regarding RAIT strategy,the 2025 ATA guidelines clearly state that remnant ablation is no longer routinely recommended for low-risk patients to avoid unnecessary radiation exposure,and highlight the preferred use of recombinant human thyroid stimulating hormone(rhTSH)for RAIT preparation in low-and intermediate-risk patients.The 2025 ATA guidelines further clarify the appropriate clinical application scenarios for nuclear medicine molecular imaging methods such as diagnostic whole-body scan(DxWBS)and 18F-FDG positron emission tomography and computed tomography(PET/CT).At the same time,concerning post-RAIT follow-up strategies,indications for repeated RAIT,as well as the diagnostic criteria and management principles for radioactive iodine-refractory DTC(RAIR-DTC),this article highlighted the key updated points in the 2025 ATA guideline.

Objective:To investigate the complications, along with their diagnosis and management, that follow local excision for rectal cancer after neoadjuvant therapy.Methods:The clinical data of 53 patients with rectal cancer who underwent local resection after neoadjuvant treatment in Peking Union Medical College Hospital from January, 2010 to December, 2024 were retrospectively collected for this descriptive case series study. Indications for local resection were: (1) age ≥ 18 years; (2) American Society of Anesthesiologists (ASA) classification I-III; (3) pathologically confirmed rectal adenocarcinoma; (4) distance from the lower edge of the tumor to the anal edge of less than 8 cm; and (5) use of preoperative neoadjuvant therapy. Contraindications of local resection were: (1) multiple primary colorectal cancer and (2) intestinal obstruction, intestinal perforation, or and gastrointestinal bleeding that required emergency surgery. There were 36 males and 17 females, and the median age was 62 (26-85) years. After neoadjuvant therapy, the median distance from the tumor to the anal margin was 4.5 (range, 2.2-6.9) cm. The main outcome measures included: surgical details, pathological findings, postoperative complications, anorectal function, and oncological outcomes (recurrence and survival).Results:Surgical methods included transanal endoscopic microsurgery (TEM) in 47 cases, transanal minimally invasive surgery (TAMIS) in 3 cases, and traditional transanal local resection in 3 cases. Of the 53 patients, 29 (54.7%) had pathological complete response (pCR), namely pT0 stage; 8 cases were pT1, 15 cases were pT2, and 1 case was pT3. Twenty-four cases (45.3%) had 33 complications. Clavien-Dindo grade I-II accounted for 97.0% (32/33), including 14 cases (26.4%) of wound dehiscence. Low anterior resection syndrome (LARS) occurred in 7 cases (13.2%), including 5 minor cases and 2 major cases. Postoperative fever occurred in 7 cases (13.2%); urinary retention occurred in 3 cases (5.7%); and diarrhea occurred in 1 case (1.9%). Clavien Dindo grade III was observed in only 3.0% (1/33) of patients, which was a rectovaginal fistula. Among the 14 patients with wound dehiscence, 7 cases only suffered anal pain and were cured after symptomatic analgesic treatment. Five cases suffered anal pain with hematochezia but improved after treatment with essential diet, hemostasis, intravenous antibiotics, pain relief, and sitz bath. Two cases of secondary perianal infection were treated with intravenous antibiotics, local drainage, parenteral nutrition support, and symptomatic treatment, and the wounds healed within 2 months. One patient with rectovaginal fistula underwent transverse colostomy. After six months, the fistula healed and stoma reversal was performed. Seven patients with LARS received anal lifting exercise and defecation reflex training, and anal function recovered to the preoperative level after 1 year. Other complications improved after symptomatic treatment, pain relief, or catheter replacement. The median follow-up time was 60 months. Local recurrence occurred in 4 patients (7.5%) and distant metastasis occurred in 12 patients (22.6%). Seven patients (13.2%) died. The 5-year disease-free survival rate was 75.5%, and the 5-year overall survival rate was 86.8%.Conclusions:Local excision for rectal cancer following neoadjuvant therapy has a high incidence of complications, mainly wound-related, due to the decline of rectal wound healing ability after radiotherapy. However, most of the complications were relieved after symptomatic treatment, and the risk was controllable.

At present,some new tongue manifestations with distinct characteristics and high clinical value have not yet gained widespread consensus,which is unfavorable to their research and promotion.This paper representatively explores four types of tongue texture manifestations(liver gall line,bulging vein tongue,concave tip tongue,convex surface tongue)and two types of tongue coating manifestations(cracked tongue coating,white saliva line)among them.It is found that the liver gall line manifests as dark stagnation of various forms on the tongue surface,indicating liver qi stagnation and blood stasis as well as heat-toxin accumulation;the bulging vein tongue is characterized by clearly raised blood vessels on the tongue surface,suggesting blood stasis due to yang deficiency or cold congelation;the concave tip tongue is characterized by a depressed tip,indicating an abnormal tongue frenulum or malnutrition of heart,lung,and kidney;the convex surface tongue features a broad and thick tongue body with an overall"convex"shape,which is observed in healthy individuals or suggests qi movement disorder and spleen and stomach stagnation;the cracked tongue coating is characterized by cracks only on the tongue coating,indicating qi deficiency with disordered fluid or yin consumption due to intense heat;the white saliva line presents as strip-like white foam bands on the tongue margin,suggesting liver qi stagnation and dampness stagnancy due to spleen deficiency.No consensus exists regarding issues such as naming and description,reflecting the necessity of expanding and standardizing the theory of tongue diagnosis.This paper aims to emphasize the value and standardization of such new tongue manifestations,enrich the theoretical system of tongue diagnosis in traditional Chinese medicine,and provide novel insights and reference basis for clinical syndrome differentiation.

The"2025 American Thyroid Association Management Guidelines for Adult Patients with Differentiated Thyroid Cancer"released by the American Thyroid Association(ATA)in 2025 include several important updates regarding nuclear medicine diagnosis and treatment for post-operative differentiated thyroid cancer(DTC).This article systematically reviewed advances in the nuclear medicine aspects of post-operative DTC assessment,decision-making for radioactive iodine therapy(RAIT),dynamic response evaluation,and follow-up strategies,guided by the 2025 ATA guidelines'DATA clinical management framework—Diagnosis,risk/benefit Assessment,Treatment decisions,and response Assessment.Building on the 2015 ATA guidelines and recent research evidence,the 2025 ATA guidelines emphasize the critical importance of post-operative response assessment(including serological and imaging evaluations)for the real-time refinement of risk stratification.It further subcategorizes recurrence risk from the original three categories(low,intermediate,high)to four categories(low,low-intermediate,intermediate-high and high)to more accurately predict the risk of structural recurrence.Regarding RAIT strategy,the 2025 ATA guidelines clearly state that remnant ablation is no longer routinely recommended for low-risk patients to avoid unnecessary radiation exposure,and highlight the preferred use of recombinant human thyroid stimulating hormone(rhTSH)for RAIT preparation in low-and intermediate-risk patients.The 2025 ATA guidelines further clarify the appropriate clinical application scenarios for nuclear medicine molecular imaging methods such as diagnostic whole-body scan(DxWBS)and 18F-FDG positron emission tomography and computed tomography(PET/CT).At the same time,concerning post-RAIT follow-up strategies,indications for repeated RAIT,as well as the diagnostic criteria and management principles for radioactive iodine-refractory DTC(RAIR-DTC),this article highlighted the key updated points in the 2025 ATA guideline.