1.Stakeholder Preference Assessment in Implementation Research
Run MAO ; Yiyuan CAI ; Chengming YANG ; Jinglan PENG ; Zhiqing NING ; Siyuan LIU ; Dong XU
Medical Journal of Peking Union Medical College Hospital 2024;15(6):1447-1455
In the process of conducting implementation research on health service issues, stakeholders' preference for contents related to evidence-based practice (EBP) and implementation strategies is closely related to whether EBP can be effectively implemented.However, multiple preference assessment methods exist, each with their own strengths, weaknesses, and application scenarios, which makes it challenging for researchers to select appropriate and effective preference assessment methods. This paper aims to review the origins, characteristics, and application scenarios of commonly used preference assessment methods, with the hope of providing valuable reference and lessons for domestic scholars to select and apply appropriate preference assessment methods in implementation research.
2.Stakeholder Preference Assessment in Implementation Research
Run MAO ; Yiyuan CAI ; Chengming YANG ; Jinglan PENG ; Zhiqing NING ; Siyuan LIU ; Dong XU
Medical Journal of Peking Union Medical College Hospital 2024;15(6):1447-1455
In the process of conducting implementation research on health service issues, stakeholders' preference for contents related to evidence-based practice (EBP) and implementation strategies is closely related to whether EBP can be effectively implemented.However, multiple preference assessment methods exist, each with their own strengths, weaknesses, and application scenarios, which makes it challenging for researchers to select appropriate and effective preference assessment methods. This paper aims to review the origins, characteristics, and application scenarios of commonly used preference assessment methods, with the hope of providing valuable reference and lessons for domestic scholars to select and apply appropriate preference assessment methods in implementation research.
3.Safety of high-carbohydrate fluid diet 2 h versus overnight fasting before non-emergency endoscopic retrograde cholangiopancreatography: A single-blind, multicenter, randomized controlled trial
Wenbo MENG ; W. Joseph LEUNG ; Zhenyu WANG ; Qiyong LI ; Leida ZHANG ; Kai ZHANG ; Xuefeng WANG ; Meng WANG ; Qi WANG ; Yingmei SHAO ; Jijun ZHANG ; Ping YUE ; Lei ZHANG ; Kexiang ZHU ; Xiaoliang ZHU ; Hui ZHANG ; Senlin HOU ; Kailin CAI ; Hao SUN ; Ping XUE ; Wei LIU ; Haiping WANG ; Li ZHANG ; Songming DING ; Zhiqing YANG ; Ming ZHANG ; Hao WENG ; Qingyuan WU ; Bendong CHEN ; Tiemin JIANG ; Yingkai WANG ; Lichao ZHANG ; Ke WU ; Xue YANG ; Zilong WEN ; Chun LIU ; Long MIAO ; Zhengfeng WANG ; Jiajia LI ; Xiaowen YAN ; Fangzhao WANG ; Lingen ZHANG ; Mingzhen BAI ; Ningning MI ; Xianzhuo ZHANG ; Wence ZHOU ; Jinqiu YUAN ; Azumi SUZUKI ; Kiyohito TANAKA ; Jiankang LIU ; Ula NUR ; Elisabete WEIDERPASS ; Xun LI
Chinese Medical Journal 2024;137(12):1437-1446
Background::Although overnight fasting is recommended prior to endoscopic retrograde cholangiopancreatography (ERCP), the benefits and safety of high-carbohydrate fluid diet (CFD) intake 2 h before ERCP remain unclear. This study aimed to analyze whether high-CFD intake 2 h before ERCP can be safe and accelerate patients’ recovery.Methods::This prospective, multicenter, randomized controlled trial involved 15 tertiary ERCP centers. A total of 1330 patients were randomized into CFD group ( n = 665) and fasting group ( n = 665). The CFD group received 400 mL of maltodextrin orally 2 h before ERCP, while the control group abstained from food/water overnight (>6 h) before ERCP. All ERCP procedures were performed using deep sedation with intravenous propofol. The investigators were blinded but not the patients. The primary outcomes included postoperative fatigue and abdominal pain score, and the secondary outcomes included complications and changes in metabolic indicators. The outcomes were analyzed according to a modified intention-to-treat principle. Results::The post-ERCP fatigue scores were significantly lower at 4 h (4.1 ± 2.6 vs. 4.8 ± 2.8, t = 4.23, P <0.001) and 20 h (2.4 ± 2.1 vs. 3.4 ± 2.4, t= 7.94, P <0.001) in the CFD group, with least-squares mean differences of 0.48 (95% confidence interval [CI]: 0.26–0.71, P <0.001) and 0.76 (95% CI: 0.57–0.95, P <0.001), respectively. The 4-h pain scores (2.1 ± 1.7 vs. 2.2 ± 1.7, t = 2.60, P = 0.009, with a least-squares mean difference of 0.21 [95% CI: 0.05–0.37]) and positive urine ketone levels (7.7% [39/509] vs. 15.4% [82/533], χ2 = 15.13, P <0.001) were lower in the CFD group. The CFD group had significantly less cholangitis (2.1% [13/634] vs. 4.0% [26/658], χ2 = 3.99, P = 0.046) but not pancreatitis (5.5% [35/634] vs. 6.5% [43/658], χ2 = 0.59, P = 0.444). Subgroup analysis revealed that CFD reduced the incidence of complications in patients with native papilla (odds ratio [OR]: 0.61, 95% CI: 0.39–0.95, P = 0.028) in the multivariable models. Conclusion::Ingesting 400 mL of CFD 2 h before ERCP is safe, with a reduction in post-ERCP fatigue, abdominal pain, and cholangitis during recovery.Trail Registration::ClinicalTrials.gov, No. NCT03075280.
4.Mismatched donor cell infusion-related syndrome following microtransplant in patients with acute myeloid leukemia.
Bo CAI ; Xiaoyan ZOU ; Xin NING ; Tieqiang LIU ; Bingxia LI ; Yaqing LEI ; Jianhui QIAO ; Kaixun HU ; Yangyang LEI ; Zhiqing LIU ; Bo YAO ; Huisheng AI ; Yi WANG ; Changlin YU ; Mei GUO
Chinese Medical Journal 2023;136(7):815-821
BACKGROUND:
Immunotherapies such as adoptive immune cell infusion and immune-modulating agents are widely used for cancer treatment, and the concomitant symptoms, including cytokine release syndrome (CRS) or immune-related adverse events (irAEs), are frequently reported. However, clinical manifestations induced by mismatched donor granulocyte colony-stimulating factor mobilized peripheral blood mononuclear cell (GPBMC) infusion in patients receiving microtransplant (MST) have not yet been well depicted.
METHODS:
We analyzed 88 cycles of mismatched GPBMC infusion in patients with acute myeloid leukemia receiving MST and 54 cycles of chemotherapy without GPBMC infusion as a comparison. Clinical symptoms and their correlation with clinical features, laboratory findings, and clinical response were explored.
RESULTS:
Fever (58.0% [51/88]) and chills (43.2% [38/88]) were the significant early-onset symptoms after GPBMC infusion. Patients possessing less human leukocyte antigen-matching loci with the donor or those with unrelated donors experienced more chills (3 [2-5] loci vs. 5 [3-5] loci, P = 0.043 and 66.7% [12/18] vs. 37.1% [26/70], P = 0.024). On the other hand, those with decreased CD4 + /CD8 + T-cell ratio developed more fever (0.8 [0.7-1.2] vs. 1.4 [1.1-2.2], P = 0.007). Multivariable analysis demonstrated that younger patients experienced more fever (odds ratio [OR] = 0.963, 95% confidence interval [CI]: 0.932-0.995, P = 0.022), while patients with younger donors experienced more chills (OR = 0.915, 95% CI: 0.859-0.975, P = 0.006). Elevated ultra-sensitive C-reactive protein levels in the absence of cytokine storm were observed following GPBMC infusion, which indicated mild and transient inflammatory response. Although no predictive value of infusion-related syndrome to leukemia burden change was found, the proportion of host pre-treatment activated T cells was positively correlated with leukemia control.
CONCLUSIONS
Mismatched GPBMC infusion in MST induced unique infusion-related symptoms and laboratory changes, which were associated with donor- or recipient-derived risk factors, with less safety and tolerance concerns than reported CRS or irAEs.
Humans
;
Leukocytes, Mononuclear
;
Hematopoietic Stem Cell Transplantation/adverse effects*
;
Leukemia, Myeloid, Acute/therapy*
;
Unrelated Donors
;
Granulocyte Colony-Stimulating Factor
;
Graft vs Host Disease
5.Clinical characteristics of choledocholithiasis combined with periampullary diverticulum and influencing factor analysis for difficult cannulation of endoscopic retrograde cholangiopan-creatography: a report of 1 920 cases
Ping YUE ; Zhenyu WANG ; Leida ZHANG ; Hao SUN ; Ping XUE ; Wei LIU ; Qi WANG ; Jijun ZHANG ; Xuefeng WANG ; Meng WANG ; Yingmei SHAO ; Kailin CAI ; Senlin HOU ; Kai ZHANG ; Qiyong LI ; Lei ZHANG ; Kexiang ZHU ; Haiping WANG ; Ming ZHANG ; Xiangyu SUN ; Zhiqing YANG ; Jie TAO ; Zilong WEN ; Qunwei WANG ; Bendong CHEN ; Yingkai WANG ; Mingning ZHAO ; Ruoyan ZHANG ; Tiemin JIANG ; Ke LIU ; Lichao ZHANG ; Kangjie CHEN ; Xiaoliang ZHU ; Hui ZHANG ; Long MIAO ; Zhengfeng WANG ; Jiajia LI ; Xiaowen YAN ; Ling'en ZHANG ; Fangzhao WANG ; Wence ZHOU ; Wenbo MENG ; Xun LI
Chinese Journal of Digestive Surgery 2023;22(1):113-121
Objective:To investigate the clinical characteristics of choledocholithiasis com-bined with periampullary diverticulum and influencing factor for difficult cannulation of endoscopic retrograde cholangiopancreatography (ERCP).Methods:The retrospective case-control study was conducted. The clinical data of 1 920 patients who underwent ERCP for choledocholithiasis in 15 medical centers, including the First Hospital of Lanzhou University, et al, from July 2015 to December 2017 were collected. There were 915 males and 1 005 females, aged (63±16)years. Of 1 920 patients, there were 228 cases with periampullary diverticulum and 1 692 cases without periampullary diverticulum. Observation indicators: (1) clinical characteristics of patients with choledocholithiasis; (2) intraoperative and postoperative situations of patients undergoing ERCP for choledocholithiasis; (3) influencing factor analysis for difficult cannulation in patients undergoing ERCP for choledocholithiasis. Measurement data with normal distribution were represented as Mean±SD, and comparison between groups was conducted using the independent sample t test. Measurement data with skewed distribution were represented as M(range) or M( Q1, Q3), and com-parison between groups was conducted using the Wilcoxon rank sum test. Count data were described as absolute numbers or percentages, and comparison between groups was conducted using the chi-square test or Fisher exact probability. The Logistic regression model was used for univariate and multivariate analyses. Results:(1) Clinical characteristics of patients with choledocholithiasis. Age, body mass index, cases with complications as chronic obstructive pulmonary disease, diameter of common bile duct, cases with diameter of common bile duct as <8 mm, 8?12 mm, >12 mm, diameter of stone, cases with number of stones as single and multiple were (69±12)years, (23.3±3.0)kg/m 2, 16, (14±4)mm, 11, 95, 122, (12±4)mm, 89, 139 in patients with choledocholithiasis combined with periampullary diverticulum, versus (62±16)years, (23.8±2.8)kg/m 2, 67, (12±4)mm, 159, 892, 641, (10±4)mm, 817, 875 in patients with choledocholithiasis not combined with periampullary diver-ticulum, showing significant differences in the above indicators between the two groups ( t=?7.55, 2.45, χ2=4.54, t=?4.92, Z=4.66, t=?7.31, χ2=6.90, P<0.05). (2) Intraoperative and postoperative situations of patients undergoing ERCP for choledocholithiasis. The balloon expansion diameter, cases with intraoperative bleeding, cases with hemorrhage management of submucosal injection, hemostatic clip, spray hemostasis, electrocoagulation hemostasis and other treatment, cases with endoscopic plastic stent placement, cases with endoscopic nasal bile duct drainage, cases with mechanical lithotripsy, cases with stone complete clearing, cases with difficult cannulation, cases with delayed intubation, cases undergoing >5 times of cannulation attempts, cannulation time, X-ray exposure time, operation time were 10.0(range, 8.5?12.0)mm, 56, 6, 5, 43, 1, 1, 52, 177, 67, 201, 74, 38, 74, (7.4±3.1)minutes, (6±3)minutes, (46±19)minutes in patients with choledocholithiasis combined with periampullary diverticulum, versus 9.0(range, 8.0?11.0)mm, 243, 35, 14, 109, 73, 12, 230, 1 457, 167, 1 565, 395, 171, 395, (6.6±2.9)minutes, (6±5)minutes, (41±17)minutes in patients with choledocholithiasis not combined with periampullary diverticulum, showing significant differences in the above indicators between the two groups ( Z=6.31, χ2=15.90, 26.02, 13.61, 11.40, 71.51, 5.12, 9.04, 8.92, 9.04, t=?3.89, 2.67, ?3.61, P<0.05). (3) Influencing factor analysis for difficult cannulation in patients undergoing ERCP for choledocholithiasis. Results of multivariate analysis showed total bilirubin >30 umol/L, number of stones >1, combined with periampullary diverticulum were indepen-dent risk factors for difficult cannulation in patients with periampullary diverticulum who underwent ERCP for choledocholithiasis ( odds ratio=1.31, 1.48, 1.44, 95% confidence interval as 1.06?1.61, 1.20?1.84, 1.06?1.95, P<0.05). Results of further analysis showed that, of 1 920 patients undergoing ERCP for choledocholithiasis, the incidence of postoperative pancreatitis was 17.271%(81/469) and 8.132%(118/1 451) in the 469 cases with difficult cannulation and 1 451 cases without difficult cannula-tion, respectively, showing a significant difference between them ( χ2=31.86, P<0.05). In the 1 692 patients with choledocholithiasis not combined with periampullary diverticulum, the incidence of postopera-tive pancreatitis was 17.722%(70/395) and 8.250%(107/1 297) in 395 cases with difficult cannula-tion and 1 297 cases without difficult cannulation, respectively, showing a significant difference between them ( χ2=29.00, P<0.05). In the 228 patients with choledocholithiasis combined with peri-ampullary diverticulum, the incidence of postoperative pancreatitis was 14.865%(11/74) and 7.143%(11/154) in 74 cases with difficult cannulation and 154 cases without difficult cannulation, respectively, showing no significant difference between them ( χ2=3.42, P>0.05). Conclusions:Compared with patients with choledocholithiasis not combined with periampullary divertioulum, periampullary divertioulum often occurs in choledocholithiasis patients of elderly and low body mass index. The proportion of chronic obstructive pulmonary disease is high in choledocholithiasis patients with periampullary diverticulum, and the diameter of stone is large, the number of stone is more in these patients. Combined with periampullary diverticulum will increase the difficult of cannulation and the ratio of patient with mechanical lithotripsy, and reduce the ratio of patient with stone complete clearing without increasing postoperative complications of choledocholithiasis patients undergoing ERCP. Total bilirubin >30 μmol/L, number of stones >1, combined with periampullary diverticulum are independent risk factors for difficult cannulation in patients of periampullary diverticulum who underwent ERCP for choledocholithiasis.
6.Establishment and application of a nomogram model for prognostic risk prediction in patients with epithelial ovarian cancer
Zhen LI ; Xiongwei CAI ; Ping YAN ; Dan ZHOU ; Mingmin HE ; Li DENG ; Yanzhou WANG ; Zhiqing LIANG
Chinese Journal of Obstetrics and Gynecology 2022;57(3):190-197
Objective:To explore the prognostic factors of epithelial ovarian carcinoma (EOC), construct a nomogram model, and evaluate the prognosis of EOC patients.Methods:A retrospective analysis was performed on clinicopathological data of 208 cases of EOC patients who received initial treatment in the First Affiliated Hospital of Army Medical University from August 11, 2016 to July 11, 2018, including age, preoperative ascites, preoperative neoadjuvant chemotherapy, surgical method, pathological type, pathological differentiation degree, surgical pathology stage, preoperative and post-chemotherapy serum cancer antigen 125 (CA 125) level, human epididymal protein 4 (HE4) level, platelet count and platelet/lymphocyte number ratio (PLR). The univariate and multivariate Cox risk ratio models were used to analyze the related factors affecting progression free survival (PFS) in EOC patients, and the prediction nomogram of PFS in EOC patients was established to evaluate its efficacy in predicting PFS. Results:Univariate analysis showed that preoperative neoadjuvant chemotherapy, pathological type, pathological differentiation degree, surgical pathology stage, serum CA 125 and HE4 level before operation and after chemotherapy, platelet count and PLR before operation and after chemotherapy were significantly correlated with PFS in EOC patients (all P<0.05). Multivariate analysis showed that surgical pathology stage, preoperative PLR, serum CA 125 and HE4 level after chemotherapy were independent prognostic factors affecting PFS of EOC patients (all P<0.01). The index coefficient of the prediction model for the prognosis of EOC patients established by this method was 0.749 (95% CI: 0.699-0.798), which had good prediction ability, and could help clinicians to more accurately evaluate the prognosis of EOC patients. Conclusion:The nomogram model constructed based on surgical pathology stage, preoperative PLR, serum CA 125 and HE4 level after chemotherapy could effectively predict the PFS of EOC patients after initial treatment, could help clinicians to screen high-risk patients, provide individualized treatment, and improve the prognosis of EOC patients.
7.Clinical efficacy of pancreaticoduodenectomy using anterior approach in situ technique for pancreatic head cancer
Jiang LI ; Xiaobei CAI ; Zhiqing YANG ; Nengwen KE ; Lirong ZHAO ; Chunming XIANG ; Heng LI
Chinese Journal of Digestive Surgery 2020;19(4):431-438
Objective:To investigate the clinical efficacy of pancreaticodudenectomy (PD) using anterior approach in situ technique for pancreatic head cancer.Methods:The retrospective cohort study was conducted. The clinicopathological data of 285 patients with pancreatic head cancer who were admitted to the First Affiliated Hospital of Kunming Medical University from January 2012 to June 2018 were collected. There were 164 males and 121 females, aged from 40 to 76 years, with an average age of 57 years. Of the 285 patients, 196 patients who underwent PD using anterior approach in situ technique were set as anterior approach group, 89 patients who underwent PD using traditional approach were set as traditional approach group. Observation indicators: (1) surgical situations; (2) postoperative situations; (3) follow-up. Follow-up was performed by outpatient examination, telephone or network interview once every 2 to 3 months to detect tumor recurrence, metastasis and survival of patients up to December 2018. The endpoint of follow-up was death of patients, and the secondary endpoint of follow-up was tumor recurrence or metastasis. Measurement data with normal distribution were represented as Mean± SD, and comparison between groups was analyzed by the t test. Measurement data with skewed distribution were represented as M (range), and comparison between groups was analyzed by the Mann-Whitney U test. Count data were represented as absolute numbers or percentages, and comparison between groups was analyzed by the chi-square test. Kaplan-Meier method was used to draw the survial curve and calculate the survival rates. Survival analysis was done by the Log-rank test. Results:(1) Surgical situations: 285 patients underwent surgery successfully. Cases with pylorus-preservaction, cases with superior mesenteric vein/ portal vein (SMV/PV) resection and reconstruction (end to end anastomosis, artificial vascular replacement, lateral wall resection and anastomosis), operation time, volume of intraoperative blood loss were 118, 37 (17, 11, 9), (303±107)minutes, 350 mL(range, 100-750 mL) in the anterior approach group, and 48, 9 (7, 1, 1), (335±103)minutes, 400 mL(range, 100-900 mL) in the traditional approach group, respectively, showing no significant difference between the two groups ( χ2=0.990, 3.474, t=0.722, Z=1.729, P>0.05). (2) Postoperative situations: the rate of R 0 resection, the number of lymph node dissected, the number of positive lymph node dissected, rate of nerve invasion, rate of vascular invasion, cases with postoperative severe complica-tions, the number of perioperative death, cases with postoperative chemotherapy were 93.88%(184/196), 12(range, 5-19), 4(range, 0-15), 45.41%(89/196), 31.12%(61/196), 28, 3, 69 in the anterior approach group, and 85.39%(76/89), 7(range, 4-17), 5(range, 0-13), 32.58%(29/89), 23.60%(21/89), 11, 2, 41 in the traditional approach group, respectively. There were significant differences in the rate of R 0 resection, the number of lymph node dissected, rate of nerve invasion between the two groups ( χ2=5.506, Z=4.637, χ2=4.149, P<0.05), while there was no significant difference in the number of positive lymph node dissected, rate of vascular invasion, cases with postoperative severe complications, the number of perioperative death, cases with postoperative chemotherapy between the two groups ( Z=0.052, χ2=1.962, 0.192, 0.001, 3.048, P>0.05). (3) Follow-up: of the 285 patients, 252 and 228 achieved the secondary endpoint and the endpoint of follow-up respectively with the follow-up time of 35 months (range, 6-58 months). There were 181 and 176 of 196 patients in the anterior approach group achieving the secondary endpoint and the endpoint of follow-up respectively with the follow-up time of 38 months (range, 6-58 months). There were 71 and 52 of 89 patients in the traditional approach group achieving the second endpoint and the endpoint of follow-up respectively with the follow-up time of 33 months (range, 7-53 months). The median tumor free survival time and median overall survival time were 31 months and 37 months in the anterior approach group, respectively, versus 24 months and 31 months in the traditional approach group. There was a significant difference in the tumor free survival between the two groups ( χ2=7.646, P<0.05), while no significant difference in the overall survival between the two groups ( χ2=3.265, P>0.05). Conclusion:PD using anterior approach in situ technique is safe and feasible for pancreatic head cancer, which can improve the rate of R 0 resection and prolong the tumor free survival time of patients.
8.TLR/NF-κB independent signaling pathway in TNF-α suppression of diabetic MyD88-knockout mice after polysaccharides administration.
Tingting LIU ; Lingxiao WANG ; Xiaohui YANG ; Zhiqing YAO ; Huizhen CAI
Journal of Zhejiang University. Medical sciences 2018;47(1):35-40
OBJECTIVE:
: To investigate the effect of polysaccharides (LBPs) on TLR/NF-κB independent pathway and serum tumor necrosis factor (TNF-α) level in diabetic MyD88-knockout mice.
METHODS:
: Diabetes was induced by feeding high-fat/high-sugar diet and injection of low-dose streptozotocin in MyD88-knockout mice. The diabetic mice were randomly divided into model group, positive control group and LBPs group. The expressions of TRAM, TRIF, TRAF6, RIP1 and TNF-α mRNA and proteins in mouse peritoneal macrophages were detected by real-time RT-PCR and Western blotting after LBPs treatment for 3 month. Serum TNF-α was determined with ELISA kit.
RESULTS:
: Real time RT-PCR showed that compared with model group, the relative expressions of and mRNA in macrophages of LBPs group were significantly decreased and expression of was significantly increased (all <0.05). Expression of TRAM, TRIF, TRAF6, RIP1 and TNF-α proteins as well as serum TNF-α level had no significant difference between LBPs group and model group (all >0.05).
CONCLUSIONS
: LBPs may not inhibit serum TNF-α level through TLR/NF-κB independent pathway.
Animals
;
Diabetes Mellitus, Experimental
;
Drugs, Chinese Herbal
;
pharmacology
;
Gene Expression Regulation
;
drug effects
;
Macrophages, Peritoneal
;
drug effects
;
Mice
;
Mice, Knockout
;
Myeloid Differentiation Factor 88
;
genetics
;
NF-kappa B
;
genetics
;
Random Allocation
;
Signal Transduction
;
drug effects
;
Tumor Necrosis Factor-alpha
;
blood
;
metabolism
9.Development and Practice of Medical Alliance in Beijing Chaoyang Hospital
Chinese Hospital Management 2017;37(7):67-68
Since the reform of the supply side has been put forward by General Secretary Xi Jinping,the research and practice of the health industry has been strengthened for the reform of the supply side,and the beneficial exploration has been carried out on the supply side structure reform.The various forms of medical alliance are the feasible way to solve the problem of supply side.Through such a reform,it can make full use of medical resources to meet the needs of the people's medical treatment.The construction of medical alliance practice in Beijing Chaoyang Hospital is analyzed,and on this basis,proposals of the medical alliance construction are put forward.
10.Accuracy of analog two-dimensional and digital three-dimensional preoperative templating for predicting implant size in total knee arthroplasty
Jie XU ; Deng LI ; Yingbin ZHANG ; Yulin HUANG ; Zhiqing CAI ; Ruofan MA
Chinese Journal of Tissue Engineering Research 2016;20(35):5173-5179
BACKGROUND:It is the key point to choose the right size of the prosthesis, and grasp the direction and thickness for osteotomy during total knee arthroplasty. In order to achieve the goal, accurate preoperative planning is very important.
OBJECTIVE:To compare the accuracy of preoperative templating in total knee arthroplasty using conventional two-dimensional (2D) and computed tomography (CT)-based three-dimensional (3D) procedures (templating on 3D image&surgical rehearsing on rapid prototype technology-models), and to confirm the necessity of 3D evaluation for preoperative planning.
METHODS:A total of 25 patients undergoing primary total knee arthroplasty were randomly selected, including 10 males and 15 females, at the age of 58 and 79 years old. 2D and 3D images were col ected from al patients. Preoperative templating was performed for each total knee arthroplasty using both conventional 2D radiographs and a CT-based 3D image model. Accuracies with regard to the predicted and actual implant sizes were determined for each procedure.
RESULTS AND CONCLUSION:The 3D procedure was found to be more accurate in predicting implant size of 80%femoral and 72%tibial components than those of the 2D procedure (4%femoral and 12%tibial components). Significant differences in the consistent rate of femoral and tibial prosthesis models were detected significantly (P<0.05). Kappa coefficient statistics demonstrated that goodness of fit of prosthesis model was good in 3D preoperative templating. Results confirmed that the superiority of 3D preoperative templating over 2D conventional evaluation is in predicting implant size, and provides more comprehensive information on skeletal anatomy.

Result Analysis
Print
Save
E-mail