Protect.4 Evo Knee Brace

When your knee has real ligament involvement, a soft support won't provide the control you need. The medi Protect.4 Evo is a functional knee brace that applies a four-point leverage principle: the rigid aluminum frame pushes at four contact points around the knee to control anterior and posterior tibial translation, rotational instability, and varus/valgus forces that ligament-deficient knees can't manage alone.

Whether you're recovering from ACL reconstruction, managing PCL instability conservatively, or returning to sport after a complex ligament injury, the Protect.4 Evo delivers maximum off-the-shelf structural knee protection with adjustable ROM stops and a polycentric hinge that tracks your knee's natural arc.

• Four-point aluminum frame creates a lever system that actively resists abnormal tibial movement in ACL/PCL-deficient knees
• Adjustable flexion and extension stops cover the full spectrum of post-surgical ROM protocols, from immobilization through advanced sport clearance
• Polycentric hinge replicates the natural rolling-and-gliding motion of the knee, preventing binding at end range
• Numbered straps eliminate inconsistent fitting, ensuring the same reliable mechanical control every time you apply the brace
• Lightweight construction supports extended wear during daily activities, physical therapy, and sports

Slide the brace into position with the hinge centered at your knee joint. Secure straps in numbered order, adjusting tension until the frame feels stable without excessive pressure. Your surgeon or physical therapist should set your initial flexion and extension limits. As your rehabilitation progresses, those limits can be advanced to match your protocol.

• Support Level: Maximum
• Frame: Rigid lightweight aluminum
• Hinge Type: Polycentric
• Extension Stops: 0°, 10°, 20°, 30°, 45°
• Flexion Stops: 0° through 90° in 10–15° increments
• Strap System: Numbered for consistent application
• Manufacturer: medi
• Sold: Individually (left or right, multiple sizes)

Consult your healthcare provider for personalized guidance.