Objective To investigate the application value of three-dimensional (3-D) printing technology in the operation of distal tibia fracture involving epiphyseal plate injury for teenagers. Methods The retrospective analysis was conducted on the clinical data of 16 cases of children patients with distal tibia fracture involving epiphyseal plate injury undergoing the operation by using of 3-D printing technology between January 2014 and December 2015. There were 12 males and 4 females with an age of 9-14 years (mean, 12.8 years). The causes of injury included traffic accident injury in 9 cases, heavy pound injury in 3 cases, and sport injury in 4 cases. The time from injury to operation was 3-92 hours (mean, 25.8 hours). According to Salter-Harris typing standard, the typing for epiphyseal injury was classified as type Ⅱ in 11 cases, type Ⅲ in 4 cases, and type Ⅳ in 1 case. The thin slice CT scan on the affected limb was performed before operation, and the Mimics14.0 medical software was applied for the design and the 1∶1 fracture model was printed by the 3-D printer; the stimulation of operative reduction was made in the fracture model, and bone plate, Kirschner wire, and hollow screw with the appropriate size were chosen, then the complete operative approach and method were designed and the internal fixator regimen was chosen, then the practical operation was performed based on the preoperative design regimen. Results The operation time was 40-68 minutes (mean, 59.1 minutes); the intraoperative blood loss was 5-102 mL (mean, 35 mL); the intraoperative fluoroscopy times was 2-6 times (mean, 2.8 times). All the patiens were followed up 12-24 months (mean, 15 months). The fracture of 15 cases reached anatomic reduction, and 1 cases had no anatomic reduction with the displaced end less than 1 mm. All the fractures reached bony union with the healing time of 2-4 months (mean, 2.6 months). There was no deep vein thrombosis, premature epiphyseal closure and oblique, or uneven ankle surface occurred, and there was no complication such as osteomyelitis, varus or valgus of ankle joint, joint stiffness, traumatic arthritis. Helfet scores of ankle function were measured at 12 months after operation, the results were excellent in 15 cases and good in 1 case. The angulation of introversion and extroversion for the affected limb was (6.56±2.48)°, and the growth length was (4.44±2.31) mm, and there was no significant difference (t=0.086, P=0.932; t=0.392, P=0.697) when compared with the uninjured side [(6.50±1.51)°, (4.69±1.08) mm]. Conclusion As the assistive technology, 3-D printing technology has a certain clinical application value in improving the effectiveness of distal tibia fracture involving epiphyseal plate injury.
Abstract： Objective To compare clinical outcomes and postoperative quality of life （QOL） of difference surgical strategies for patients with esophagogastric junction （EGJ） cancer， and investigate the best surgical strategy. Methods A total of 148 patients with EGJ cancer underwent surgical treatment in Xuzhou First People’s Hospital from July 2007 to October 2011. There were 111 male patients and 37 female patients with an average age of 64 （47-77）years. All the patients were divided into 3 groups according to different surgical strategies for them based on their respective preoperative assessment and tumor invasion degree. In group A， 81 patients underwent proximal subtotal gastrectomy and subaortic gastroesophageal anastomosis. In group B， 20 patients underwent total gastrectomy and esophagojejunostomy. In group C， 47 patients underwent proximal subtotal gastrectomy and jejunal interposition. Postoperative mortality and morbidity were compared among the three groups. Cancer metastasis rate and 1-year survival rate were also compared among the three groups. QOL questionnaire （EORTC QLQ C-30 and tumor specific module QLQ-OES24） was used to evaluate patients’ QOL during follow-up. Results There was no statistical difference in postoperative morbidity （P=0.762）and mortality （P=0.650）among the three groups. There was no statistical difference in cancer metastasis rate at 1 year after surgery among the three groups （P=0.983）. One-year survival rate was 100% in all the three groups. At 1 year after surgery， physical functioning score （P=0.037，0.000） and global health score （P=0.035，0.006） of group A and group C were significantly higher than those of group B， and there was no statistical difference in physical functioning score and global health score between group A and group C （P＞0.05）. Emotional function score of group B was significantly lower than that of group C （P=0.015）. Fatigue score （P=0.040，0.006）， anorexia（P=0.045，0.025）， nausea and vomiting symptom score （P=0.033，0.048） of group A and group C were significantly lower than those of group B. Pain score of group A was significantly lower than that of group C （P=0.009）. Insomnia score of group A was significantly higher than that of group C （P=0.028）. Reflux score of group A was significantly higher than that of group B and group C （P=0.025，P=0.021）. Conclusion Postoperative QOL in patients with EGJ cancer who undergo total gastrectomy is comparatively unsatisfactory. Proximal subtotal gastrectomy and jejunal interposition can significantly improve postoperative QOL. Postoperative QOL evaluation is helpful to choose better surgical strategies for patients with EGJ cancer.