Initia® Knee System

Initia Knee System is approved in Japan and cleared by the U.S. FDA for marketing in the United States. The 510(k) clearance is held by KYOCERA Medical Technologies, Inc. The product information presented on this page is intended for markets outside Japan and may differ from the product available in Japan.

Total knee replacement system

Initia Knee System consists of femoral, tibial, and patellar components, all intended for cemented fixation.
CR and PS designs are available.

Features
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Features

1. Anatomical Fit

Designed to obtain an appropriate fit from CT data, it is designed to reduce overhang from the osteotomy surface and the possibility of impingement with soft tissue.

2. Wide Range of Sizes

In the most commonly used size range, the femoral components and tibial trays are available in 2 mm increments in anteroposterior dimension, while the inserts are available in 1 mm thickness increments.

3. Rotational freedom

The lateral posterior condyle of the femoral component curves centrally. Combined with the 3D curve of the insert that receives it, it is designed to allow for large rotational movements around the medial condyle.

4. Smooth Patellar Tracking

To accommodate individual patellar tracking patterns, the trochlear grooves are wide and flexible, and the thin anterior flange, deep trochlear grooves, and cutouts at the center of the insert front are designed to distribute pressure on the patellofemoral joint.

5. Deep-Flexion Design

The combination of the extended and rounded posterior condyle of the femoral component and the 3D curve of the insert is expected to maintain surface contact and achieve contact even at a maximum flexion angle of 160°.

6. Stability

In order to increase the stability of the knee from extension to mid-flexion position, the joint surface is conformed. This is expected to reduce forward movement at the initial flexion stage and forward and backward instability at the mid-flexion position.

7. Polyethylene Wear Reduction

The femoral component and insert are designed to maintain surface contact throughout the entire range of motion. The insert is secured by the strong locking of the tibial tray.

8. Dedicated Instrumentation

Developed with input from orthopedic surgeons, the instrumentation is designed for intuitive use, accurate bone resection, and flexibility in meeting intraoperative requirements. A wide range of options is also available to accommodate different cases.