Related Experiment Video
Updated: May 27, 2025
07:33
In Vitro Application of a Wireless Sensor in Flexion-Extension Gap Balance of Unicompartmental Knee Arthroplasty
Published on: May 5, 2023
474
Accelerometer-Navigated Revision Total Knee Arthroplasty: A Technique for Successful Gap Balancing
Matthew E Wells1,2, Richard L Purcell1
1Department of Orthopaedic Surgery, Texas Tech University Health Sciences Center of El Paso, El Paso, TX, USA.
Arthroplasty Today
|February 17, 2025
Summary
OrthAlign, an accelerometer-based navigation system, is the first FDA-approved computer-assisted surgical navigation for revision total knee arthroplasty (TKA). This technique guide details its use for achieving key goals in revision TKA surgery.
Area of Science:
- Orthopedics
- Surgical Technology
- Biomedical Engineering
Background:
- Revision total knee arthroplasty (TKA) presents unique surgical challenges.
- Accurate implant placement and restoration of knee biomechanics are critical for successful outcomes.
- Existing navigation systems may have limitations in the complex revision setting.
Purpose of the Study:
- To present a technique guide for using accelerometer-based navigation (OrthAlign) in revision TKA.
- To illustrate how OrthAlign can achieve the four primary goals of revision TKA.
- To demonstrate an individualized and reproducible surgical approach using this technology.
Main Methods:
- Utilizes the OrthAlign system, an accelerometer-based computer-assisted surgical navigation tool.
- Focuses on a technique developed by the senior author for revision TKA.
- Integrates the navigation system to address specific challenges like exposure, bone loss, joint line restoration, and stability.
Main Results:
- The technique guide demonstrates the application of OrthAlign in achieving critical revision TKA goals.
- Illustrates safe explantation of prior implants and management of bone defects.
- Shows restoration of joint line and optimization of stability through gap balancing and implant constraint adjustments.
Conclusions:
- Accelerometer-based navigation (OrthAlign) provides a valuable tool for revision TKA.
- This technique enables surgeons to meet the complex goals of revision surgery effectively.
- OrthAlign facilitates an individualized, reproducible approach to revision total knee arthroplasty.
