A Hybrid CT-Free Navigation System for Total Hip Arthroplasty

Abstract

The proposed CT-free hybrid system promises to increase the accuracy and reliability of THA surgery.

Application of Rapid Prototyping Pelvic Model for Patients with DDH to Facilitate Arthroplasty Planning: A Pilot Study

“…(2) A more complicated process matching patient's image data and anatomical structure and a longer operation duration. (3) Increased exposure to radiation of both surgeons and patients [28,35]. (4) Other restrictions like high cost, high human and system error rate and long learning curve.…”

Real-time motion analysis for patients after total hip arthroplasty by using 4-dimensional patient-specific model

“…Several recent studies have focused on preoperative planning and intraoperative image-guided navigation systems [9,10]. A surgical robot has also been applied to clinical cases and its efficacy has been proven in several studies [11].…”

Computer assisted determination of acetabular cup orientation using 2D–3D image registration

“…It was suggested by Wan et al [37] that the common measurements used for reporting compute navigation and CT scan values should be the radiographic coronal plane because of the reason that surgeons were familiar with the measurement numbers of the radiographic coronal plane of plain radiographs. However, the reality is that most of the available studies on computer navigation based or CT scan-based measurements are done with respect to the anterior pelvic plane without considering the pelvic tilt [8][9][10]15,[18][19][20][21][22]24,25,33,34,36], although the influence of the pelvic tilt on anteversion and inclination of the acetabular cup has drawn more and more attentions [37][38][39][40][41][42]. The present method, which allows for computing the pelvic tilt and rotation with respect to the X-ray imaging plane/plate by performing a 2D-3D registration between a CT scan of the patient and a post-operative X-ray radiograph, can be used as a tool to convert the results measured with respect to the anterior pelvic plane to those measured with respect to the radiographic coronal plane.…”

“…In this paper, for both the ground truth measurement and the measurement generated from the present method, we used anatomical anteversion (AA) and radiographic inclination (RI). The reason why these particular angles are chosen is due to their wide usage in most of the commercial navigation systems [20,33]. Thus, the radiological anteversion measured from the plain film using the technique described in [11] is converted to the anatomical anteversion using a formula described by Murray [32] for later comparison purpose.…”