Gait Analysis after Total Knee Arthroplasty Assisted by 3D-Printed Personalized Guide

Abstract

Background. With the development of three-dimensional printing (3DP) technology, the patient-specific instrumentation (PSI) has been widely applied in total knee arthroplasty (TKA). The purpose of this study was to compare the gait parameters of patients with 3DP personalized guide-assisted and standard TKA. Methods. Retrospective analysis of the advanced knee OA cases in our hospital between June 2017 and June 2018 was conducted. 30 cases received 3DP personalized guide-assisted TKA (group A), and 60 patients who underwent standard TKA during the same period were in group B and group C according to the computed tomography (CT) measurement results, each with 30 cases. Hip–knee–ankle angle (HKA), patella transverse axis-femoral transepicondylar axis angle (PFA), and gait parameters were statistically analyzed. The function was assessed by Hospital for Specific Surgery (HSS) and Knee Society Score (KSS). Results. The mean follow-up period was 12.3 months in the three groups. The knee max flexion angle at the swing phase of group A was larger than group B and group C (P<0.05), there was no statistically significant difference in other gait parameters. The mean PFA of group A was smaller than that of group B and group C (P<0.05). While, the HKA, HSS, and KSS scores of three groups showed no significant difference. Conclusion. 3DP personalized guide technology could improve the gait parameters after surgery, specifically reflected in the knee max flexion angle at the swing phase. It could also assist in the reconstruction of more accurate patellar tracking and rotational alignment in TKA, avoiding the occurrence of insufficient or excessive extorsion.

Surface Textured Double Layer Triboelectric Nanogenerator for Autonomous and Ultra‐Sensitive Biomedical Sensing

“…Gait analysis is an important analysis method in delaying and treating various diseases, such as cerebral palsy, total knee arthroplasties, etc. [64][65][66][67] Keeping that in mind, researchers have made the use of triboelectric nanogenerators as pressure detectors for gait analysis application. [20,43] For this reason, the proposed unique SER-TENG structure was employed to realize an array of sensors in a sole for the real-time gait monitoring application, as shown in Figure 7b.…”

Patient-specific instrumentation in total knee arthroplasty: a review of the current literature

“…No differences in terms of the KSS and Hospital for Specific Surgery (HSS) between PSI and CI were found by Gianotti et al and Sun et al 20,39 . The results in the outcomes of TKA based on the KSS and WOMAC were similar between PSI and CI in a study by Mehdipur et al 22 .…”

Application of three-dimensional-printed porous tantalum cones in total knee arthroplasty revision to reconstruct bone defects

“…In recent years, with the development of precision medicine, 3D printing has also become increasingly progressive. With its advantages of precision and individualization, it is, especially suitable for the design and fabrication of personalized prostheses in orthopedics ( Duan et al, 2019 ; Sun M. et al, 2020 ). The rise of 3D printing has provided a new and accurate solution for the treatment of various osteoarticular diseases ( Duan et al, 2018 ).…”