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Objective:To explore the effect of the 3D printed model assisted network teaching of neurosurgery.Methods:Seventy-six probation students were divided into: 3D printed model assisted online course teaching group (test group) and traditional teaching group (control group). After 1-month online teaching, quantitative assessment and satisfaction survey were carried out. SPSS 17.0 was used for statistical analysis of variance.Results:The department graduation test (theory and operation) scores of students in the test group were (86.7±7.4) points, which was significantly higher than those in the control group (78.2±8.2) points ( t=5.56, P<0.01). The teaching satisfaction survey showed that the test group had significantly higher scores in self-evaluation of spatial imagination ( t=3.81, P<0.01), deepening understanding of neuroanatomy ( t=5.29, P<0.01), and increasing interest in clinical learning ( t=5.12, P<0.01) than those of the control group. Conclusion:Compared with the conventional online teaching methods, 3D printed model assisted online teaching helps to improve teaching quality and students' satisfaction.
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Objective:To evaluate the effect of 3D printed models assisted teaching method on clinical teaching of hip revision and improve the teaching quality.Methods:Fifty students who were in the standardized training for surgical specialty from Peking University Third Hospital were divided into a control group and an experimental group, with 25 students in each group. The control group was taught by traditional methods, while the experimental group was taught by 3D printed models. After the training, professional theory test and teaching evaluation questionnaire survey were conducted among the members of the two groups, and statistical analysis was made on the students' professional theory test scores, learning interests and teaching satisfaction. SPSS 18.0 was used for t test. Results:The theoretical scores of the experimental group [(84.60±5.76) points] were higher than those of the control group [(78.20±6.90) points], and the difference was statistically significant ( P<0.05). The teaching satisfaction and learning interest of the experimental group were both better than those of the control group [(4.72±0.46) vs. (4.28±0.61), (4.76±0.44) vs. (4.28±0.54)], with statistically significant differences ( P<0.05). Conclusion:The 3D printed model assisted teaching can effectively deepen students' understanding of hip joint structure, improve the teaching quality, and enhance their enthusiasm and initiative in learning.
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Objective To evaluate the clinical value of 3D printed modeling used to assist internal fixation for pelvic fractures.Methods The databases,Pubmed,EMBase,Cochrane library,CNKI,Wanfang and VIP,from initiation till August 2018,were searched for the controlled studies comparing surgery assisted by 3D printed modeling and conventional surgery in the treatment of pelvic fractures.The 2 groups were compared in terms of surgical time,blood loss,Matta score for reduction,Majeed score for functional recovery and complications.This meta-analysis was performed using software RevMan 5.3.Results A total of 6 relative controlled studies were included for this analysis involving 513 patients.There were 221 cases in the 3D printed modeling group and 292 ones in the conventional group.Our Meta-analysis showed that there were significant differences between the 2 groups in surgical time (MD =-48.11,95％ CI:-74.16 ～-22.06,P ＜0.05),blood loss (MD=-250.63,95％ CI:-337.42～-163.84,P ＜0.05) and Matta score for reduction (OR =1.85,95％ CI:1.07 ～ 3.20,P =0.03),favoring the 3D printed modeling group.No statistically significant difference was found between the 2 group in the rate of complications (OR =0.61,95％ CI:0.32 ～ 1.17,P =0.14).Conclusion Assistance with 3D printed modeling may help the surgery for pelvic fractures to shorten surgery time,decrease blood loss and improve reduction quality.
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An 8 month-old, 10 kg male Azawakh dog was presented due to worsening forelimb gait and exercise intolerance. The right forelimb presented gross angular limb deformity with carpal valgus and radial procurvatum. Surgical planning based on radiographs allowed calculation of the centers of rotation and angularity (CORAs). The computer tomography data were used to generate 3D reconstructions of the antebrachium to aid the detection of the orthopaedic problems. With proper imaging software, the nature of the deformity and its degree were quantified using a previously unreported method based on the CORAs as a 3D printed model of anatomical area of interest. This 3D printed model was used by the surgeon to simulate the surgery with all orthopaedic steps, which included a partial ulna osteotomy and a double cuneiform osteotomy of the radius performed at the level of CORAs and stabilized with bone plates and screws. After 7 weeks, radiographs revealed bone union. At 8 months after surgery the animal presented a complete recovery of the involved forelimb. CORAs method combined with computed tomography and 3D model was useful to plan and simulate surgical procedures, including the corrective surgery of forelimb deformities in a dog which improved the surgical efficiency comparatively to the conventional pre-operative study.(AU)
Um cão com 8 meses de idade, 10kg de peso vivo, macho da raça Azawakh foi apresentado à clínica devido à intolerância ao exercício e agravamento da marcha do membro anterior. O membro anterior direito apresentou uma deformidade angular com valgus carpal e com um procarvatum radial. O planeamento cirúrgico inicialmente baseado em exames radiográficos possibilitou o cálculo dos centros de rotação e angulação articulares (CORAs). O exame de tomografia computadorizada foi utilizado juntamente com um software de imagiologia para obter o modelo 3D virtual da área anatómica de interesse que foi posteriormente impresso em 3D e que permitiu quantificar micrometricamente a deformação óssea presente. Este modelo 3D foi utilizado pelos cirurgiões para executar uma simulação cirúrgica completa que englobou todos os procedimentos cirúrgicos, que incluiu a realização de várias osteotomias e aplicação do material cirúrgico (placas e parafusos). Com base na simulação cirúrgica foi executada a cirurgia ao animal. Decorridas sete semanas, as radiografias demonstraram uma correta regeneração óssea. Oito meses após a cirurgia o animal apresentou uma recuperação completa. O método dos CORAs juntamente com a tomografia computadorizada e com a utilização do modelo 3D revelou-se útil no planeamento e na simulação dos vários procedimentos cirúrgicos, resultando numa melhoria significativa da eficiência cirúrgica.(AU)
Subject(s)
Animals , Dogs , Dogs/abnormalities , Printing, Three-Dimensional/statistics & numerical data , Radius/surgeryABSTRACT
The precise surgical treatment for hepatobiliary diseases has been a challenging topic in hepatobiliary surgery for a long time.A perfect preoperative plan can help the surgeon make R0 resection of the lesion and preserve the healthy tissue as much as possible.In addition,all of these depend on the application of different imaging modalities,especially three-dimensional reconstruction technique.But some limitations of 3D reconstruction should be noted:different surgeons may have different views for one object because of different observation points;or it cannot be used for intraoperative re-orientation and so on.3D printed model can overcome some disadvantages of 3D reconstruction.This paper reviewed related literature that reported the usage of 3D printed model in hepatobiliary surgery.