KneeNaviAR

Navigation for Total knee replacement TKR has been reported to provide better results than conventional surgical technique, but is expensive.
App offers an aid to surgeon to navigate during Total knee arthroplasty procedure in augmented reality AR by allowing to:
-to estimate rotational alignment -white side line is to be seen, tibia posterior slope by presenting joint line planes, varus/valgus stability in real time, eliminating the need for additional soft tissue releases during surgery, and providing more precise estimation of component placement in coronal, sagittal according to a surgeon’s specific preference
-present joint line planes in AR position is helpful during revision sursery
-calculate tibia torsion, and measure of bone resections in mm.
assist with soft tissue balance.
- calculate in real time the mechanical axis deviation (in mm) MAD, anatomical and mechanical femoral axes angle (aMFA), mechanical lateral proximal femoral angle (mLPFA), mechanical lateral distal femoral angle(mLDFA), joint line convergence angle (JLCA), mechanical medial proximal tibial angle (mMPTA), mechanical lateral distal tibial angle (mLDTA), Hip Knee Ankle line (HKA) and Mid joint line (MJL) orientation that gives the surgeon valuable objective intraoperatively informations.
- estimate kinematic alignment of the knee (KAO) and relevant values are presented and avoiding residual joint obliquity or malalignment.
- have a navigating guidance of saw bone blade. Surgeon is able to monitor the position and orientation of saw blade in Augmented Reality minimizing the risk of intraoperative technical pitfalls and achieve a safe and accurate osteotomy.
-data to be reported on the screen, and the surgeon can recalculate the deformity with numbers and then determine how much can be corrected.
-not require advanced preoperative imaging, such as CT scanning; planning can be done exclusively intraoperative by registering bony and cartilage landmarks .
-the surgeon to expedite the procedure effortlessly-based on patient’s anatomy allow prediction, by visualising all necessary anatomical axes in AR before actual bone resection of tibia and femur during total knee arthroplasty, and foresee what effect could bring a modification of one parameter to the rest.

Disclaimer
Before you use the software. The software should be used only for educational purpose namely training Orthopaedic Residents etch. Never use in real Surgery regarding its plausibility, validation is pending. The app is for educational use. Clinical judgment and experience are required to properly use the software. These instructions alone do not replace in depth training in planning for osteotomies. It only serves as a general guideline. All information received from the software output must be reviewed before any actual attempt at lab i.e. cutting saw bone for training purpose! The App indicated for assisting during training the Operator. Judgment and experience are required to properly use the App. The software is not for primary image interpretation. Any influence to the operators in making decisions remains Surgeons own responsibility and experience. App does not dispense medical advice.