Three-dimensional printing technology for patient-matched instrument in treatment of cubitus varus deformity:A case report  

作　　者：Nithid Sri-utenchai Nachapan Pengrung Korakod Srikong Chedtha Puncreobutr Boonrat Lohwongwatana Paphon Sa-ngasoongsong 

机构地区：[1]Department of Orthopedics,Faculty of Medicine Ramathibodi Hospital,Mahidol University,Bangkok 10400,Thailand [2]Biomechanic Research Center,Meticuly Co Ltd.,Chulalongkorn University,Bangkok 10330,Thailand [3]Department of Metallurgical Engineering,Faculty of Engineering,Chulalongkorn University,Bangkok 10330,Thailand

出　　处：《World Journal of Orthopedics》2021年第5期338-345,共8页世界骨科杂志（英文版）

摘　　要：BACKGROUND Recently,medical three-dimensional printing technology(3DPT)has demonstrated potential benefits for the treatment of cubitus varus deformity(CVD)by improving accuracy of the osteotomy through the use of an osteotomy guide,with or without a patient-mated plate.Here,we present an interesting CVD case,involving a patient who was treated with corrective biplanar chevron osteotomy using an innovative customized osteotomy guide and a newly designed patient-matched monoblock crosslink plate created with 3DPT.CASE SUMMARY A 32-year-old female presented with a significant CVD from childhood injury.A computer simulation was processed using images from computerized tomography scans of both upper extremities.The biplanar chevron osteotomy was designed to create identical anatomy between the mirror image of the contralateral distal humerus and the osteotomized distal humerus.Next,the customized osteotomy guide and patient-matched monoblock crosslink plate were designed and printed.A simulation osteotomy was created for the real-sized bone model,and the operation was performed using the posterior paratricipital approach with k-wire positioning from the customized osteotomy guide as a predrilled hole for screw fixation to achieve immediate control of the reduction after osteotomy.Our method allowed for successful treatment of the CVD case,significantly improving the patient’s radiographic and clinical outcomes,with satisfactory result.CONCLUSION 3DPT-created patient-matched osteotomy guide and instrumentation provides accurate control during CVD correction.

关 键 词：Cubitus varus deformity Post-trauma reconstruction Three-dimensional printing technology Biplanar chevron osteotomy Customized osteotomy guide Patientmatched implant Case report 

分 类 号：R687.3[医药卫生—骨科学]