Development of patient specific knee joint implant A.R. Balwan ⇑ , V.D. Shinde Department of Mechanical Engineering, D.K.T.E. Society’s Textile and Engineering Institute, Ichalkaranji 416115, India article info Article history: Received 5 September 2019 Received in revised form 5 October 2019 Accepted 5 November 2019 Available online xxxx Keywords: CT scan DICOM files STL model Knee implant NRRD files abstract The main objective of this paper is to generate 3D model of knee from Digital Imaging and Communication in Medical (DICOM) files, which is acquired from CT scan. Now a day so many cases of Total Knee Replacement (TKR) are happens due to various reasons and after TKR, patient satisfies 90% to 95% as reported. In preoperative planning saves the time and boosts the knee replacement surgery and it includes 3D model of knee, which is essential for further prediction of operative decisions. The pur- pose of this work was to form a procedure for generating 3D solid model of the human knee to be used in an ongoing preoperative planning. 3D Solid models of the distal end of the femur and the tibial plateau were created to approximate the human knee. So, in this work many open source data conversion soft- ware’s are used for transformation of DICOM files to Stereo-Lithography (STL) model. Solidworks soft- ware gives significant contribution to produce 3D solid models from the scanned data. This 3D model of knee is used for customization of knee implant according to damaged portion of actual knee or required dimensions. Ó 2019 Elsevier Ltd. All rights reserved. Selection and Peer-review under responsibility of the scientific committee of the First International Con- ference on Recent Advances in Materials and Manufacturing 2019. 1. Introduction Human joints are to degenerative and 90% of population over the age of 40 suffers from same degree of degenerative joint dis- ease. Ultimately replacement of joints is accomplished through orthopaedic surgery and it includes the simulation of 3D model of customized medical implant. Total joint replacement (TJR) arthroplasty is recognized as major achievement in orthopaedic surgery. From all joints of human body, the knee joint is the largest and most heavily-loaded joint. It is reported that as a result of acci- dents only there are 200,000 to 300,000 cases of total knee replace- ment surgery (TKR) each year [1]. Total knee replacement (TKR) surgery is the standard method in the treatment of knee surgery with a high success. Restoring range of motion, relieving pain effec- tively, and improving function are the main aims of TKR. After TKR patient satisfies 90% to 95% as reported [2]. Pre-operative planning by means of a digitalised software program for joint replacement has become an essential stage in surgical preparation. It is an effec- tive tool to decide the type and size of the implant, which predicts the postoperative biomechanical environment with overall benefit [3,4] to reduce the intra-operative complication rate before surgery [5]. The preoperative examination helps to identify whether or not the patient’s illness is actually caused by joint, and whether or not the patient is a good surgical candidate [6]. The similar approach of preoperative planning with various software’s can be applied for total knee replacement, which gives very high prediction accuracy for knee implants [3]. This approach saves the time and boosts the knee replacement surgery, because it needs to complete the surgery in minimum time limit [4]. In this paper focus on knee implant design using patient specific loading and get database for design. The interac- tion between TKR implant and knee joint dynamics are evaluated using NSK models. Finite element method is used for wear stresses prediction. This study also includes rivets contact, contact area, wear rate and volumetric wear of implant. The authors have inves- tigated and quadriceps force of three patient specific TKA and con- ventional TKA using validated computational model. The anatomy tibical articular surface APS TKA shows knee mechanics close to normal knee joint. In this work stress analysis of knee implant using ansys. The static analysis is also carried at different angles. Limited research work relating to plan of surgery for doctors and specific size of implants is available. The standard size of implants leads to limitations in specific surgery. Fig. 1 shows the transformation process of Digital Imaging and Communication in Medical (DICOM) files of CT scan into 3D solid model of knee. https://doi.org/10.1016/j.matpr.2019.11.032 2214-7853/Ó 2019 Elsevier Ltd. All rights reserved. Selection and Peer-review under responsibility of the scientific committee of the First International Conference on Recent Advances in Materials and Manufacturing 2019. ⇑ Corresponding author. E-mail address: ar_balwan@yahoo.co.in (A.R. Balwan). Materials Today: Proceedings xxx (xxxx) xxx Contents lists available at ScienceDirect Materials Today: Proceedings journal homepage: www.elsevier.com/locate/matpr Please cite this article as: A. R. Balwan and V. D. Shinde, Development of patient specific knee joint implant, Materials Today: Proceedings, https://doi.org/ 10.1016/j.matpr.2019.11.032