Computer-Aided Preoperative Planning and Virtual Simulation in Orthopedic Surgery

2017 ◽  
pp. 281-306
Author(s):  
Jiing-Yih Lai ◽  
Zhang Yuanzhi ◽  
Y. Z. Zhang
Keyword(s):  
Orthopedic Surgery ◽  
Preoperative Planning ◽  
Virtual Simulation ◽  
Computer Aided

Implant Deformation on Digital Preoperative Planning of Lower Extremities Fractures

2012 ◽  
Vol 3 (1) ◽  
pp. 1-15 ◽  
Author(s):  
Esmitt Ramírez ◽  
Ernesto Coto
Keyword(s):  
Orthopedic Surgery ◽  
Deformation Process ◽  
Preoperative Planning ◽  
Lower Extremities ◽  
Moving Least Squares ◽  
X Ray ◽  
Essential Step ◽  
Computer Aided ◽  
Computer Aided Orthopedic Surgery ◽  
Mls Method

Preoperative planning is an essential step before performing any surgical procedure. Computer Aided Orthopedic Surgery (CAOS) systems are extensively used for the planning of surgeries for fractures of lower extremities. These systems are input an X-Ray image of the fracture and the planning can be digitally overlaid onto the image. In many cases, when an implant is added to the planning, it does not fit perfectly in the patient’s anatomy and therefore it is bended to be adjusted to the bone. This paper presents a new method for the deformation of implants in CAOS systems, based on the Moving Least Squares (MLS) method. Several improvements over the original MLS are introduced to achieve results visually similar to the real procedure and make the deformation process easier and simpler for the surgeon. Over 100 clinical surgeries have been already planned successfully using a CAOS system that employs the proposed technique.

scholarly journals Preoperative planning of medial opening wedge high tibial osteotomy using 3D computer-aided design weight-bearing simulated guidance: Technique and preliminary result

2019 ◽  
Vol 27 (1) ◽  
pp. 230949901983145 ◽  
Author(s):  
Bancha Chernchujit ◽  
Suthee Tharakulphan ◽  
Renaldi Prasetia ◽  
Nattapon Chantarapanich ◽  
Choen Jirawison ◽  
...  
Keyword(s):  
Computer Aided Design ◽  
Preoperative Planning ◽  
Weight Bearing ◽  
Tibial Osteotomy ◽  
Opening Wedge ◽  
Computer Aided ◽  
Wedge High Tibial Osteotomy ◽  
Aided Design ◽  
Guidance Technique ◽  
Design Weight

Computer Aided Finite Element Simulation of the Developed Driller System for Bone Drilling Process in Orthopedic Surgery

2019 ◽  
Vol 18 (04) ◽  
pp. 583-594 ◽  
Author(s):  
Kadir Gok ◽  
Arif Gok ◽  
Yasin Kisioglu
Keyword(s):  
Finite Element ◽  
Temperature Rise ◽  
Orthopedic Surgery ◽  
Soft Tissues ◽  
Experimental Results ◽  
Drilling Process ◽  
Drill Bit ◽  
Bone Drilling ◽  
Computer Aided ◽  
Driller System

Heat reveals during the bone drilling operations in orthopedic surgery because of friction between bone and surgical drill bit. The heating causes extremely important damages in bone and soft tissues. The heating has a critical threshold and it is known as 47∘C. If bone temperature value exceeds 47∘C, osteonecrosis occurs in bones and soft tissues. Many factors such as surgical drill bit geometry and material, drilling parameters, coolant has important roles for the temperature rise. Many methods are used to decrease the temperature rise. The most effective method among them is to use the coolant internally. Numeric simulations of a new driller system to avoid the overheating during the orthopedic operating processes were performed in this study. The numerical simulation with/without coolant was also performed using the finite element based software. Computer aided simulation studies were used to measure the bone temperatures occurred during the bone drilling processes. The outcomes from the simulations were compared with the experimental results. A good temperature level agreement between the experimental results and FEA simulations was found during the bone drilling process.

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