Design of VR System for Cervical Spondylosis Treatment Based on Small Needle Knife
Virtual surgery can create an environment with multiple senses such as vision,touch,and hearing,which plays an important role in changing traditional medical models and improving the professionalism of staff.However,its application in needle knife surgery is not yet widespread.In view of this,the study used AnyBody and Hill models for multi body dynamic analysis of the head and neck muscles,and implemented intervertebral disc load calculation based on the FDK algorithm.In addition,in order to better simulate the interaction process between cervical soft tissue and needle knife,a virtual surgical simulation system including image rendering and collision detection was studied and designed.The results showed that the model proposed in the study showed no interruption throughout the entire process of needle knife movement,and could decrease to 0 with the end of the separation operation between the needle knife and the cervical soft tissue.This indicates that the model has a good effect in avoiding tissue penetration during separation.In terms of predicting intervertebral disc pressure,the average pressure generated by the proposed model during forward flexion,backward extension,lateral bending,and rotational movements is between 50 and 150N,which is in line with the daily activity pressure range.Therefore,this indicates the effectiveness of the proposed model in simulating and predicting the mechanical characteristics of the cervical spine.
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