Objective To discuss the short-term efficacy and safety of primary percutaneous reduction combined with robotic-assisted screw placement for the treatment of Sanders type Ⅲ and Ⅳ calcaneal frac-tures.Methods A total of 52 patients(52 feet)with Sanders type Ⅲ and Ⅳ calcaneal fractures admitted to this hospital from August 2022 to October 2024 were selected as the study subjects.33 patients were treated with robot assisted screw placement(the observation group),including 23 cases of Sanders type Ⅲ patients(4 cases of AC type,16 cases of AB type,3 cases of BC type)and 10 cases of Sanders type Ⅳ patients;19 patients underwent manual screw placement under C-arm X-ray fluoroscopy(the control group),including 14 cases of Sanders type Ⅲ(5 cases of AC type,9 cases of AB type)and 5 cases of Sanders Ⅳ type.The B?hler angle,Gissane angle,calcaneal height,calcaneal width,and calcaneal length were compared between the two groups at 3 and 12 months after surgery.The differences in the time from injury to surgery,intraoperative blood loss,number of intraoperative fluoroscopies,total incision length,operation time,number of screws inserted,num-ber of punctures,hospital stay,fracture healing time,and proportion of tarsal sinus incision-assisted reduction between the two groups were evaluated and compared.The American Orthopedic Foot and Ankle Society(AOFAS)ankle and hindfoot function score,excellent rate of function and visual analog scale(VAS)pain score after surgery were also compared,and the incidence of postoperative complications between the two groups were compared to evaluate safety.Results Both groups of patients were followed up for more than 12 months after surgery.At 3 and 12 months postoperatively,B?hler's angle,Gissane's angle,calcaneal length,calcaneal height,and calcaneal width in both groups showed significant improvements compared to preopera-tive measurements,but there was no statistically significant difference between the two groups(P＞0.05).The intraoperative blooding loss,number of intraoperative fluoroscopies,operation time,and number of punc-tures in the observation group were all lower than those in the control group,and the differences were statisti-cally significant(P＜0.05);There was no statistically significant difference in the time from injury to surger-y,total incision length,number of screws inserted,hospital stay,fracture healing time,proportion of tarsal si-nus incision-assisted reduction,and excellent rate of function between the two groups of patients(P＞0.05).The AOFAS ankle and hindfoot function score of the observation group was higher than that of the control group at 3 months after surgery,and the VAS pain scores in the early postoperative period was lower than that of the control group,the differences were statistically significant(P＜0.05).The incidence of complications such as lower ankle pain,traumatic arthritis,and plantar pain in the observation group was significantly lower than that in the control group,and the difference was statistically significant(P＜0.05).Conclusion Com-pared with manual screw placement,primary percutaneous reduction combined with robotic-assisted screw placement for the treatment of Sanders type Ⅲ and Ⅳ calcaneal fractures is more effective,safe,precise,mini-mally invasive and efficient,with less intraoperative bleeding and lower incidence of complications.

Objective To explore the clinical significance of monitoring drainage fluid parathyroid hormone (dPTH) for estimating the in situ reserves and function of the parathyroid by analyzing the change of serum calcium,serum parathyroid hormone(sPTH) and dPTH after thyroid surgery.Methods According to the operative method,the total of 144 patients with thyroid disease were divided into five groups:unilateral lobectomy,unilateral lobectomy plus isthmectomy with unilateral lymph node dissection,total thyroidectomy,total thyroidectomy with unilateral lymph node dissection,and total thyroidectomy with bilateral lymph node dissection group.The blood calcium,sPTH and dPTH level of patients were tested before operation and on the 1st,2nd,3rd and 4th day after operation.The depression of serum calcium,hypocalcemia and hypoparathyroidism were observed after operation.The serum calcium,serum PTH and dPTH level were summarized and analyzed statistically in order to evaluate the in situ reserves and postoperative function of the parathyroid.Results Among the 114 cases,the decline of serum calcium level mostly happened on the 2nd day after operation(70 cases,61.4％).There were 36 patients with hypocalcemia (31.58％) and 34 patients with hypoparathyroidism (29.82％).Serum calcium level increased gradually in all of the patients.Although sPTH level swung,it had a rising trend on the whole.The level of serum calcium and sPTH was positively correlated.The level of dPTH was discrete and decreased along with time.The decline level of dPTH among different groups had statistical difference.Conclusions It is a promising method to evaluate the in situ reserves and function of the parathyroid by monitoring the level and changes of dPTH after thyroid surgery,and it is of value for preventive calcium supplementation after thyroid surgery.

Objective: To explore the clinical significance of metastasis of lymph nodes between sternocleidomastoid and sternohyoid muscle (LNSS) in papillary thyroid cancer (PTC). Methods: A total of 175 patients with PTC who underwent thyroidectomy with LNSS dissection were retrospectively analyzed. Univariate and multivariate Logistic regression analyses were used to determine the independent risk factors for LNSS metastasis in PTC. Results: The rate of detectable LNSS was 70.9% (124/175) and metastasis rate was 7.4% (13/175). Of 13 cases with LNSS metastasis, 10 with the coexistence of cervical lymph node metastasis. Univariate Logistic regression analysis showed that multiple focal cancer, tumor located in the lower pole of thyroid, belt-shaped muscle invasion, lateral cervical lymph node metastasis, cN+ , the number of cervical lymph nodes with metastasis and the number of lymph nodes with metastasis in level Ⅳwere the risk factors for LNSS metastasis (P<0.05). Multivariate Logistic regression analysis suggested that tumor located in the lower pole of thyroid and the number of cervical lymph nodes with metastasis >6 were the independent risk factors for LNSS metastasis (P<0.05). Given the number of cervical lymph nodes with metastasis as a predictor for the LNSS metastasis, the sensitivity was 92.3%, the specificity was 66.7% and the accuracy rate was 68.6%. Conclusions LNSS metastasis is commom in PTC, with a metastasis rate of 7.4%. PTC in the lower pole of thyroid and the number of cervical lymph nodes with metastasis > 6 are independent risks for LNSS metastasis.

OBJECTIVETo explore the application of Monte Carlo simulation in optimizing and adjusting the reimbursement scheme with regard to the New Rural Cooperative Medical System (NCMS) to scientific steering practice. Optimization of the reimbursement scheme in rural areas of China was also studied.

METHODSA multi-stage sampling household survey was conducted in Sihui county, with 4 433 rural residents from 1 179 households from 13 towns in Guangdong province surveyed by self-designed questionnaire. Probit Regression Model was applied in fitting data and then estimating the own-price elasticity and cross elasticity of healthcare demand for both outpatients and inpatients. Monte Carlo simulation model was constructed to estimate the reimbursement effects of various alternative reimbursement schemes, by replicated simulation for one thousand times and each sampling on five hundred households. In this way, optimization of the implemented reimbursement scheme in Sihui county was conducted.

RESULTSOwn-priced elasticity of demands for outpatient visit, inpatient visit in the township hospital center, secondary hospital and tertiary hospital were -0.174, -0.264, -0.675 and -0.429, respectively. Outpatient demand was affected by the per-visit price of township hospital center and secondary hospital. The cross-priced elasticity of demands for outpatient visit appeared to be 0.125 and 0.150. The reimbursement effects of Scheme B7 showed that the efficiency of NCMS fund was 17.85% , the reimbursement ratio for healthcare was 25.63%, and the decreased percentages of poverty caused by illness was 18.25%, more than 9.37%, from the implemented scheme A. So the implemented scheme was in need for optimization.

CONCLUSIONMonte Carlo simulation technique was applicable to simulate the effects of the optimized alternative reimbursement scheme of NCMS and it provided a new idea and method to optimize and adjust the reimbursement scheme.

Adolescent ; Adult ; China ; Female ; Humans ; Insurance, Health, Reimbursement ; economics ; Male ; Middle Aged ; Monte Carlo Method ; Rural Population ; statistics & numerical data ; Young Adult

Objective To explore the application of Monte Carlo simulation in optimizing and adjusting the reimbursement scheme with regard to the New Rural Cooperative Medical System (NCMS)to scientific steering practice. Optimization of the reimbursement scheme in rural areas of China was also studied. Methods A multi-stage sampling household survey was conducted in Sihui county,with 4 433 rural residents from 1 179 households from 13 towns in Guangdong province surveyed by self-designed questionnaire. Probit Regression Model was applied in fitting data and then estimating the own-price elasticity and cross elasticity of healthcare demand for both outpatients and inpatients. Monte Carlo simulation model was constructed to estimate the reimbursement effects of various alternative reimbursement schemes,by replicated simulation for one thousand times and each sampling on five hundred households. In this way,optimization of the implemented reimbursement scheme in Sihui county was conducted. Results Own-priced elasticity of demands for outpatient visit,inpatient visit in the township hospital center,secondary hospital and tertiary hospital were-0.174,-0.264,-0.675 and -0.429,respectively. Outpatient demand was affected by the per-visit price of township hospital center and secondary hospital. The cross-priced elasticity of demands for outpatient visit appeared to be 0.125 and 0.150. The reimbursement effects of Scheme B7 showed that the efficiency of NCMS fund was 17.85%,the reimbursement ratio for healthcare was 25.63%,and the decreased percentages of poverty caused by illness was 18.25%,more than 9.37%, from the implemented scheme A. So the implemented scheme was in need for optimization. Conclusion Monte Carlo simulation technique was applicable to simulate the effects of the optimized alternative reimbursement scheme of NCMS and it provided a new idea and method to optimize and adjust the reimbursement scheme.

This paper intends to explore a method which can arouse the students'interests,improve their study efficiency and develop their creativity by applying the delightful teaching mode during the pharmacology teaching in medical vocational colleges.When applying the de-lightful teaching mode,it is important for us to take advantage of different delightful materials,use various flexible teaching skills and emphasize the attractive education,and only in this way can we obtain good results.