LEXI Co.
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Aday before a knee replacement surgery, the surgeon doesn’t just review charts or scans—they step into a virtual operating room. Using a 3D model of the patient’s knee, the surgeon performs a full surgical simulation, fine-tuning their approach for a safer and more precise procedure the next day.

LEXI Co., a medical software company, is powered by this transformative approach, offering ZedView and ZedPlanning—cutting-edge 3D preplanning orthopedic tools that bring improvement in the performance of surgeons and quality of life (QOL) for patients.

ZedView series establishes a virtual preplanning platform, enabling surgeons to prep themselves and navigate each case as if they’ve already performed it while reducing intraoperative uncertainties. With an extensive library of over 35,000 3D templating data points for significant joints—spanning hip, knee, shoulder, spine and osteotomy procedures, it provides a comprehensive roadmap tailored to each patient’s anatomy.

The software’s proprietary algorithms convert raw digital imaging and communications (DICOM) data from CT or MRI scans into detailed 3D models of skeletal structures, effectively giving surgeons a digital twin of the patient’s anatomy to study and prepare. All relevant patient information—demographics, scan data and surgical details—is curated into a comprehensive database, presenting a complete picture for the surgical team.

From here, ZedView’s library of implants becomes a toolbox, allowing surgeons to virtually place and refine femoral and tibial components onto the 3D model or multi-planar reconstruction images with accuracy. Every angle, rotation and resection amount are easily calculated and adjusted, providing surgeons with an extraordinary ability to explore and anticipate every detail.
Even the most challenging surgeries become well-practiced routines by visualizing implant alignment details long before the first incision. Surgeons can adjust quantitative parameters, including version, inclination or femoral angles and anticipate challenges like preoperatively detecting impingements among implants and bones, significantly reducing the risk of complications.

This powerful preplanning model empowers surgeons to enter the operating room with clarity and confidence. The results speak for themselves—shorter surgery times, improved recovery rates and a safer experience that ultimately enhances the quality of life for patients.

The benefits of ZedView extend seamlessly into the postoperative phase, where surgeons can revisit each case to compare final implant placements with preoperative plans, evaluate any adjustments in implant placement parameters against the reference plane or reference axis and observe alignment changes postoperation. This continuous feedback loop confirms the accuracy of each surgery and refines future procedures while providing valuable insights into the patient’s recovery path.

Surgeons can adjust quantitative parameters, including version, inclination or femoral angles and anticipate challenges like preoperatively detecting impingements among implants and bones, significantly reducing the risk of complications


One surgeon, reflecting on the experience with Lexi’s tools, shared, “With 2-dimensional templating software, it is not easy to select a suitable size and position of implants. ZedView is very informative with 3D parameters on cup anteversion, inclination, bone quality of the acetabulum and its placement, stem model and size to best fit in the femoral canal, leg length change, etc. It brings excellent outcomes to my patients.”

Surgeons seeking a flexible, on-demand 3D templating service can benefit from ZedPlanning—a pay-per-case service designed for those who require advanced preoperative planning without needing to purchase software or pay initial fees. After sending patient DICOM data and operation details, including implant type, to LEXI through the online server, a 3D model is generated and shared with the surgeon.

The software is CE-marked and FDA-cleared, signifying that it meets rigorous international standards for safety, efficacy and performance in both Europe and the U.S. Developed under an ISO 13485-certified quality management system, ZedView adheres to stringent quality controls specific to medical device manufacturing, ensuring reliability and precision in every use.

Over 250 medical institutions in Japan have installed ZedView, reflecting the confidence surgeons and healthcare organizations place in its promise to enhance surgical performance and improve patients' quality of life.

This trust is a bold testament to LEXI Co.’s transformative impact on joint surgery—where each procedure is performed and perfected.
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LEXI Co.

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LEXI Co. develops innovative 3D surgical preplanning software, ZedView and ZedPlanning, empowering surgeons with precise implant placement and enhanced visualization for joint replacements. Their advanced technology improves accuracy, reduces risks and optimizes patient outcomes.

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