Mimics Software By Three-dimensional Reconstruction And Rapid Prototyping Technology In The Treatment Of Fracture

Objective: With the rapid development of transportation andconstruction, as well as rising living standards, the increasing number ofincidence of fractures and the rate of surgical treatment. In the past, surgicaloptions in the selection process, from the initial hand touch experience to theX-ray to CT, MRI tomography to assist the surgeon to obtain a generalunderstanding of the fracture site. Mimics software can handle tomographyimage reconstruction of three-dimensional model of fracture, software modelcan achieve a variety of parameter measurement, simulation reset operation,the establishment of a three-dimensional finite element model forbiomechanical analysis. Rapid prototyping technology is the accumulation ofthe material layer by layer or point by point directly from a computer model ofa three-dimensional object, as a computer-aided manufacturing technology,over the past few years has been successfully applied to many aspects of themedical field. Combined with computer-aided design, not only can producehuman anatomy model, and can be manufactured with curved perfectlymatched human anatomy surgical plates to guide clinical personalized, precise,minimally invasive surgery.Objective: To investigate Mimics software by three-dimensionalreconstruction and rapid prototyping technology in the treatment of fractureand to assess its clinical effects. This paper mainly in the distal femur, distalhumerus C type of AO fracture classification as the research object.Scanning distal, distal humerus fractures of the femur CT data beforeoperation,the software mimics was used to build models of fracture, the STLoutput format to the rapid prototypeing equipment, obtain the fracture site1:1physical model, guide the clinical development of operation plans. Statisticsurgery operative time, blood loss, postoperative joint function score and other data, in proving the value of Mimics software by three-dimensionalreconstruction and rapid prototyping technology in the treatment of fracture.Guide the operation doctor to develop individualized operation schemes forthe patient, reduce the operation risk, improve the life quality of the patients.Materials and methods: This paper uses the Mimics14.0software, theresearch object is the patients, who were amitted from2011.9to2013.7,include59cases of distal femoral fractures and30cases of patientswith a distal humeral fracture. Experimental group is divided intothree-dimensional reconstruction with Mimics software applications combinedwith rapid prototyping technology for surgical treatment and to apply theconventional surgical treatment for surgical treatment of the control group.There are32male cases and27female ones in the distal femur fracture group,which aging from16to83years old, average47.7years old. According to AOclassification, type C237cases, type C3in22cases,30cases in experimentalgroup, including18cases of type C2,12cases of type C3,29cases in thecontrol group,19cases of type C2, type C3in10cases. Distal humeralfractures in patients with male17cases, female13cases, age15-76years old,average42.5years old. The experimental group of15cases,9cases of typeC2, type C3in6cases, the control group of15cases, including8cases of typeC2, type C3in7cases. After Scanning the CT data of experiment groupfractures preoperatively, reconstruction of fracture model, output to the rapidprototyping machine, then we simulation the operation project. Recorded theoperation time, bleeding volume, postoperative follow-up was the score ofjoint function of patients.Using SPSS16.0for data processing and statistical analysis, datausing(`x±s), were compared, using t test, P<0.05had significant difference.Result: The experimental group of distal femoral fracture, operation time（144.0±36.4）mins, the amount of bleeding（588.3±219.2）ml, Controlgroup, operation time (171.2±61.1) mins, the amount of bleeding (760.3±386.2) ml. There are significant differences P<0.05. The postoperative jointfunction according to Karlstorm knee function evaluation standard in experimental group, the excellent and good rate was93.3%, control group, theexcellent and good rate was82.8%. The experimental group, distal humeralfracture, operation time (75.5±20) mins,the amount of bleeding (189.5±30)ml, the control group, operation time (90±25) mins, the amount of bleeding(270.5±40) ml. There are significant differences P<0.05. According to theCassebaum elbow performance score standard joint functionafter operation inexperimental group, the excellent and good rate was86.7%,control group, theexcellent and good rate was80%.Conclusion: Combined with rapid prototyping technology made lesionmodel by using Mimics software, visualize the true situation lesion，whichmaking the Department of orthopedics physicians more perceptualinformation in planning the operation scheme and foresee the operation effect.The performance of location, shape, the biomechanics of implant is morescientific, and implant matching better, can significantly reduce the operationtime is reduced operation bleeding volume, improve the score of joint function,reduce the operation risk, improve the success rate of operation. Combinedwith engineering tools and medical technology, enable clinicians to betterunderstand the disease, so as to improve the overall health level.