VEGA System® - Three-compartment knee prostheses

VEGA System®

DESCRIPTION OF VEGA System® - Three-compartment knee prostheses

VEGA System®

Natural rotation

The posterior stabilized VEGA Knee System was developed to fulfill the modern-day requirements of patient and surgeons for a modern knee implant system. The following objectives were considered in its design:

Natural kinematics through a rollback and a pivotal motion around the medial condyle

During flexion, the natural knee shows increased rollback of the femur on the lateral side while the femur rotates around the medial center. [1] The asymmetric cam design of VEGA facilitates this lateral rollback and medial rotation, and therefore enables a natural pivotal motion. [2]

Stability even in high flexion

Based on the design and the position of the PS box and post, the contact point of the box and post move distally with an increase of flexion. Therefore the increased jumping distance in flexion can reduce the subluxation risk. The synchronized contact surfaces between the articulating components maximize the bearing surface stress distribution in extension, reducing the risk of delamination. The high congruency between femur and tibia in extension as well as the line contact up to 160° of flexion stabilizes the patient’s movements and reduces wear. To reach higher varus-valgus stability a PS+ gliding surface with a mediolaterally wider PS post is available. Posterior inclination of the post design prevents anterior impingement with the extensor mechanism and increases resistance to dislocation.

Soft tissue friendly and bone sparing implant design

Besides the reconstruction of natural kinematics, two attributes were in the foreground during the development of the VEGA Knee System.

Go to the Aesculap® - a B. Braun

SPECIFICATION OF VEGA System® - Three-compartment knee prostheses

Type: three-compartment
Surgical application: primary
Tibial bearing: fixed-bearing
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