Real-time Precision Tracking System in Periprosthetic Acetabular Osteotomy with Osteotome Chisel Elastic Deformation Consideration

• DOI: 10.1115/1.4068422
• Publication Date: 2025-04-11T14:07:36Z
• Authors: Yumei Li; Yang Han; Gang Fu; Yanjie Xu; Tianmu Wang; Zhenguo Nie

Abstract The Periprosthetic Acetabular Osteotomy (PAO) is a commonly used technique in orthopedics for treating developmental hip dysplasia and hip dislocation, as the most effective treatment for developmental dysplasia of the hip (DDH). However, performing PAO can be challenging for surgeons due to limited visibility and difficulty in detecting any deformations of osteotome chisels when they are deeply immersed in the pelvis. These challenges can result in serious complications, such as excessive bleeding and nerve injuries. We propose a novel precision tracking system to mitigate these risks by acquiring the chisel deformation in real time. This system consists of a newly designed osteotome chisel with five built-in micro-sensors. We utilize a hybrid prediction model to compute the chisel's global deformation, which combines the fast finite element method (FFEM) and a Deep Neural Network (DNN) regression model. Our model has achieved an impressive R2 value of 0.98781 and an average deformation error of only 0.07 mm in nodes compared to the experiment. Implementing such an osteotome chisel with a deformation tracking system has shown immense potential in increasing surgical accuracy and reducing medical negligence for PAO operations