Three-dimensional printed patient-specific instrumentation (3D-PSI) provides a precise and individualized treatment solution for unicompartmental knee arthroplasty (UKA). Currently, this technology is being applied in clinical practice and has demonstrated certain potential. Compared to conventional instrumentation (CI), 3D-PSI offers a broader range of indications, higher-quality preoperative planning, shorter surgical time, a smoother learning curve, more precise osteotomy and prosthesis placement, and better postoperative functional recovery. However, it still has limitations in the rotational alignment of the tibial component. Additionally, the higher cost for patients and increased hospital equipment investment make it less beneficial for surgeons already proficient in CI techniques. Further reliable evidence is needed to compare 3D-PSI with computer navigation and robotic technologies. This review summarizes the advantages and limitations of 3D-PSI assisted UKA and compares 3D-PSI with different auxiliary technologies.

Objective To observe the effects of Jianpi Qutan Huayu Prescription on oxidative stress and inflammatory response in mini-pigs with atherosclerosis(AS);To explore its mechanism based on the NOX5-ERK1/2 signaling pathway.Methods Twelve Bama mini-pigs were randomly divided into control group,model group,and Jianpi Qutan Huayu Prescription low-and high-dosage groups,with 3 pigs in each group.A high-fat diet was used to feed for 24 weeks to construct an AS model,and the treatment group was also supplemented with Jianpi Qutan Huayu Prescription in the feed.The general condition of mini-pigs(body length,abdominal circumference,body mass,food intake,and fecal water content)was measured at week 0,16,and 24 of administration,HE staining was used to observe the morphology of aortic tissue,while oil red O staining was used to observe lipid deposition in aortic and myocardial tissue,transmission electron microscopy was used to observe the ultrastructure of aortic tissue,and a fully automated biochemical analyzer was used to detect serum contents of TC,HDL-C,and LDL-C.ELISA was used to detect the contents of serum reactive oxygen species(ROS),interleukin(IL)-6,IL-10,tumor necrosis factor(TNF)-α,hypersensitivity-C-reactive protein(hs-CRP),vascular cell adhesion molecule-1(VCAM-1),and intercellular adhesion molecule-1(ICAM-1).Western blot was used to detect the expressions of NADPH oxidase 5(NOX5),extracellular signal regulated kinase 1/2(ERK1/2),p-ERK1/2,VCAM-1,and proliferating cell nuclear antigen(PCNA)proteins.Results Compared with the control group,the abdominal circumference,body mass,and food intake of mini-pigs in the model group increased at 16 and 24 weeks(P<0.01),there was significant thickening of the inner membrane of aorta,destruction of endothelial cells,lipid deposition,edema of smooth muscle cells,and significant swelling of mitochondria,serum TC,LDL-C contents and the contents of ROS,IL-6,IL-10,TNF-α,hs-CRP,VCAM-1,and ICAM-1 increased,while the content of HDL-C decreased(P<0.01);the expressions of NOX5,p-ERK1/2,VCAM-1,and PCNA proteins in aortic tissue increased(P<0.01).Compared with the model group,Jianpi Qutan Huayu Prescription low-and high-dosage groups showed a decrease in abdominal circumference,body mass,and food intake at 16 and 24 weeks(P<0.05,P<0.01),the plaque area and lipid deposition were reduced,and the damage to endothelial cells was alleviated,serum TC,LDL-C contents and the contents of ROS,IL-6,IL-10,TNF-α,hs-CRP,ICAM-1,and VCAM-1 decreased,and the content of HDL-C increased(P<0.01,P<0.05);the expressiond of NOX5,p-ERK1/2,VCAM-1,and PCNA proteins in aortic tissue decreased(P<0.01,P<0.05).Conclusion Jianpi Qutan Huayu Prescription can effectively alleviate AS in mini-pigs,and its mechanism may be related to inhibiting the activation of the NOX5-ERK1/2 signaling pathway and alleviating oxidative stress-induced inflammatory response.

Middle-aged and elderly patients with femoral neck fracture often suffer from basic diseases. Conservative treatment will significantly increase the incidence of complications. At present, surgical treatment is mostly advocated. Internal fixation is one of the effective treatment methods for middle-aged and elderly patients with femoral neck fracture. It has the advantages of improving hip joint function, accelerating patient recovery, and improving patient quality of life. At present, there are many choices of internal fixation in the world, each has its own advantages and disadvantages, and there is no unified standard. Different surgical methods can be selected according to various factors such as fracture type, patient′s physical condition and surgical auxiliary technology. This article reviews the clinical progress of internal fixation for femoral neck fractures in middle-aged and elderly patients from four aspects: the characteristics of femoral neck fractures in middle-aged and elderly patients, common internal fixation methods, 3D printing guide plate auxiliary technology and artificial intelligence auxiliary technology.

Objective:To explore the influence of deviation of the bolt in femoral neck system (FNS) on the short-term outcomes in young and middle-aged patients with displaced femoral neck fracture.Methods:A retrospective analysis was conducted of the 114 young and middle-aged patients with displaced femoral neck fracture who had been treated with FNS at Department of Orthopaedics, Suzhou Municipal Hospital from December 2019 to January 2023. Based on the postoperative measurements of the deviation of the bolt tip to the central axis of the femoral head and neck (W), the patients were divided into a central group (W≤20%) and a deviation group (W>20%). In the central group of 63 cases, there were 27 males and 36 females with a mean age of (46.4±8.0) years. In the deviation group of 51 cases, there were 20 males and 31 females with a mean age of (45.1±9.8) years. The 2 groups were compared in terms of weight-bearing time, fracture healing time, tip-apex distance, degree of femoral neck shortening, Harris Hip Score and EuroQol five-dimensional questionnaire-5L (EQ-5D-5L) utility value at the last follow-up, as well as complications and revision surgeries.Results:There was no statistically significant difference in the preoperative general information, auxiliary reduction or quality of fracture reduction between the 2 groups, showing comparability between groups ( P>0.05). There was no significant difference in the partial weight-bearing time between the 2 groups ( P>0.05). In the central group, the full weight-bearing time [15.0 (14.0, 16.0) weeks] and fracture healing time [14.0 (12.0, 15.0) weeks] were significantly shorter than those in the deviation group [16.0 (15.0, 19.0) weeks; 15.0 (13.0, 17.0) weeks], the tip-apex distance [(21.4±3.4) mm] was significantly shorter than that in the deviation group [(23.5±2.7) mm], the Harris Hip Score [(90.6±6.1) points] and EQ-5D-5L utility value [0.9 (0.8, 0.9)] at the last follow-up were significantly higher than those in the deviation group [(87.7±6.2) points; 0.9 (0.8, 0.9)], and the incidences of moderate and severe femoral neck shortening [25.4% (16/63)], avascular necrosis of the femoral head [0 (0/63)] and revision surgery [0 (0/63)] were significantly lower than those in the deviation group [66.7% (34/51), 7.8% (4/51), 9.8% (5/51)] (all P< 0.05). Conclusion:A closer positioning of the FNS bolt to the central axis of the femoral head and neck favors satisfactory short-term outcomes and a lower revision surgery rate in young and middle-aged patients with displaced femoral neck fracture.

In case of hepatic ischemia-reperfusion injury(HIRI),mitophagy is induced by multiple pathways such as PINK1/Parkin and mitophagy receptor,which is closely related to mitochondrial dynamic related protein.Mito-phagy is a double-edged sword.Moderate mitophagy is effective in reducing the oxidative stress and maintaining mi-tochondria homeostasis,thereby reducing hepatocyte apoptosis and necrosis,inhibiting inflammation response and mitigating HIRI.However excessive mitophagy will aggravate HIRI.So research on the role and mechanism of mito-phagy may facilitate the development of new strategy for prevention and clinical treatment of HIRI.

Bone defects caused by trauma, infection, tumor and other factors is a thorny problem in orthopedic clinic, and promoting bone repair and regeneration is the key and difficult point of treatment. In addition to autologous bone grafting, artificial bone materials are often used for large bone defects. β-tricalcium phosphate has good biocompatibility, bone conduction and bone induction properties, and has been studied deeply because of its excellent drug delivery performance and has shown broad application prospects. In this paper, the author will summarize the research progress of β-tricalcium phosphate composites loaded with different drugs in the treatment of bone defects caused by trauma, infection and tumor.

In order to explore the treatment of Her-2 positive breast cancer patients who failed in multi-line treatments, we retrospectively analyzed the clinical data of a patient with refractory Her-2 positive breast cancer.The patient was initially diagnosed as Her-2 positive advanced breast cancer.After six line treatment in the outer hospital, the patient′s condition was basically in a progressive state.The breast tumor was broken and purulent, the lung metastasis increased, and the patient′s quality of life was poor.The patient was admitted to Department of Breast Surgery of Affiliated Suqian Hospital of Xuzhou Medical University, after MDT discussion, we gave pyrrolotinib combined with capecitabine treatment, the chest wound healed gradually, the lung metastasis gradually reduced, and the quality of life was better.A retrospective analysis of this case showed that pyrrolidine combined with capecitabine may bring hope to Her-2 positive breast cancer patients who failed to receive multi-line therapies, especially those who failed to target therapy.

Objective To explore the application of paclitaxel or docetaxel combined with cisplatin (TP) with cyclophosphamide,pirirubicin and fluorouracil (FAC) in the primary tumor molecular typing Luminal A,axillary lymph node metastasis three negative breast cancer. Methods From January 2012 to January 2014, the clinical data of forty-nine patients with were selected. All patients were divided into two groups by balance randomization method, TP group and FAC group. Twenty-five patients were treated with TP regimen and 24 patients were treated with FAC regimen. The clinical efficacy was evaluated after six cycles of chemotherapy. Chemotherapy effects,adverse reactions and survival rates of two groups were compared. Results All patients were given intravenous chemotherapy according to the plan and were evaluated for clinical efficacy. The response rate (RR) was 64. 0％ in TP group,including 4 cases of complete remission (CR),12 cases of partial remission (PR),7 cases of stable disease(SD) and 2 cases of progressive disease(PD). The adverse reactions were gastrointestinal reactions and granulocytopenia. The median progression-free survival ( PFS) and overall survival ( OS) were respectively 12. 4 months and 34. 1 months. In FAC group,the response rate ( RR) was 33. 3％,including 2 cases of CR,6 cases of PR,11 cases of SD and 5 cases of PD. The adverse reactions were gastrointestinal reactions,granulocytopenia and premature atrial contraction. The median PFS and OS were 7. 2 months and 20. 7 months respectively. The effective rate of TP group was higher than that of FAC group (χ2=4. 608,P=0. 032),and the progression-free survival time and total survival time were longer than those of FAC group (χ2 =8. 317, 8. 563, P=0. 004, 0. 003 ) . Conclusion Compared to FAC regimen, TP regimen could improve the survival rate of patients better with breast cancer of Primary tumor Luminal A and Axillary Lymph Node Metastasis Triple negative type, and adverse reactions were tolerated, it may be an optimized chemotherapy.

Objective To explore the expression of HR and Her?2 in breast cancer primary tumor and axillary lymph node metastasis. Methods Four hundred and twenty?eight female patients with unilateral breast cancer combined with axillary lymph node metastasis treated in the Affiliated Suqian Hospital of Xuzhou Medical University from January 2011 to January 2016 were selected in this study. Immunohistochemistry was used to detect the expression of ER,PR,Her?2 and Ki67 in primary tumor and axillary lymph node metastasis. Results The positive rates of ER expression were 75. 9% ( 325/428 ) and 70. 3% ( 301/428 ) respectively in primary tumor and axillary lymph node metastasis. The positive rates of PR expression were 61. 4% ( 263/428) and 56. 1% ( 240/428 ) respectively in primary tumor and axillary lymph node metastasis. The rates of Her?2 overexpression were 20. 1% ( 86/428) in primary tumor and the positive rate of Her?2 in axillary lymph node metastasis was 22. 7%( 97/428 ) . The positive rates of Ki67 expression were 45. 6%( 195/428 ) and 39. 7%(170/428) respectively in primary tumor and axillary lymph node metastasis. The expression of ER,PR,Her?2 and Ki67 in primary and axillary lymph node metastasis showed no statistical significance ( P>0. 05 ) . The molecular typing of primary tumor and axillary lymph node metastasis were not consistent in 31 patients ( 31/428,7. 24%) ,including 14 cases of primary tumor Luminal A,9 cases of Her?2 overexpression in axillary lymph node metastasis and 5 cases of triple negative breast cancer. Primary tumor Luminal B was detected in 10 cases, while 6 cases of Her?2 overexpression in axillary lymph node metastasis and 4 cases of triple negative breast cancer. Primary tumor Her?2 was overexpressed in 4 cases,while 1 case of Luminal A,3 cases of Luminal B in axillary lymph node metastasis. There were 3 cases of primary tumor triple negative breast cancer,while 2 cases of Luminal B in axillary lymph node metastasis and 1 case of Her?2 overexpression. Conclusion The expressions of ER, PR, Her?2 and Ki67 in primary tumor and axillary lymph node metastasis of some breast cancer were different. Immunohistochemistry for primary tumor and axillary lymph node metastasis of stage II?III breast cancer patients should be routinely carried out. Based on molecular typing of primary tumor and axillary lymph node metastasis,individualized treatment plan can be developed,so that patients will benefit from it.

Objective To compare the effects of smoking and non smoking on postoperative pain of laparoscopic cholecystectomy. Methods Sixty patients having underwent selective laparoscopic cholecystectom were divided into smoking group and non smoking group by random digits table with 30 cases each. In smoking group, 14 cases quitted smoking within 1 week before operation. The Fagerstrom test of nicotine dependence (FTND) was evaluated before operation in smoking group, and FTND ≥ 6 scores was in 11 cases. The visual analog score (VAS), Bruggrmarm comfort score (BCS), sedation-agitation score (SAS), immediately, 15 min, and 30 min after entering postanesthesia care unit (PACU) and leaving PACU was evaluated. The operation time, anesthesia time, wake up time, extubation time, PACU time, using rate of remedial measures and untoward reaction were recorded. Results There were no statistical differences in operation time, anesthesia time, wake up time, extubation time, SAS and incidence of untoward reaction between 2 groups (P>0.05). The PACU time and using rate of remedial measures in smoking group were significantly higher than those in non smoking group:(39.7 ± 5.1) min vs. (31.3 ± 6.1) min and 30.0% (9/30) vs. 0, and there were statistical differences (P<0.05). The VAS immediately, 15 min and 30 min after entering PACU and leaving PACU in smoking group was significantly higher than that in non smoking group: (2.90 ± 0.85) scores vs. (1.00 ± 0.83) scores, (2.70 ± 0.47) scores vs. (0.73 ± 0.69) scores, (2.60 ± 0.56) scores vs. (1.13 ± 0.73) scores, (2.23 ± 0.57) scores vs. (1.13 ± 0.73) scores; and the BCS was significantly lower than that in non smoking group:(1.80 ± 0.61) scores vs. (2.90 ± 0.99) scores, (1.90 ± 0.31) scores vs. (2.87 ± 1.00) scores, (2.10 ± 0.31) scores vs. (2.47 ± 0.82) scores, (2.17 ± 0.38) scores vs. (2.47 ± 0.82) scores, and there were statistical differences (P<0.05). The VAS immediately after entering PACU in patients of FTND ≥ 6 scores was significantly higher than that in patients of FTND<6 scores:(3.6 ± 0.7) scores vs. (2.5 ± 0.7) scores, the BCS was significantly lower than that in patients of FTND <6 scores:(1.5 ± 0.5) scores vs. (2.0 ± 0.6) scores, and there were statistical differences (P<0.05). The VAS immediately after entering PACU in patients of non- quit smoking was significantly higher than that in patients of quit smoking: (3.4 ± 0.7) scores vs. (2.4 ± 0.6) scores, and there were statistical differences (P<0.05). Conclusions Smokers have more severe postoperative pain in laparoscopic cholecystectomy and higher postoperative opioid requirement than nonsmokers. Quit smoking before surgery will reduce postoperative pain and related complications. Appropriate increase of analgesic drugs can prevent postoperative pain in patients with smoking.