M.4 X-lock®

4-point knee brace

  • Secure fit due to physioglide hinge
  • Lock mechanism for easy mobility
  • Waterproof foam padding

  Medical specifications

Functional rigid brace with extension / flexion limitation

The M.4 X-lock is a functional knee orthosis. The product is exclusively to be used for the orthotic fitting of the knee and only on intact skin.


Product benefits

  • Stabilisation of the knee joint via the 4-point-stabilisation-principle
  • Water-repellent padding material - brace can also be worn while shower.
  • The physioglide hinge mimics the roll-glide movement of the knee and supports secure fit on the leg.
  • The lock mechanism enables a quick change between immobilisation in extended position and free movement within a defined range of motion
  • The split strap pads (strap 4) can be positioned induvidually. This can prevent undesired pressure on operative incisions.
  • The movable D-rings adjust flexibly upon movement and provides that the brace supports secure fit on the leg
  • The extra extended calf shells provides an improved fit and counteracts potential pressure points.
  • Comprehensive set of wedges for flexible extension and flexion limitation
  • Anatomically pre-moulded frame
  • Numbered straps for easy and simple usage
  • Limitations:
    - Extension: 0°, 10°, 20°, 30°, 45°
    - Flexion:  0°, 10°, 20°, 30°, 45°, 60°, 75°, 90°
    - Immobilisation: 0°, 10°, 20°, 30°, 45°

Intended purpose

Rgid brace designed to guide and stabilise the knee joint using limitations for extension / flexion.


Standard colours

Material components

Avional, Velours, Polyester, PU foam






Medical specifications


All indications requiring a physiological guidance and stabilization of the knee joint and / or relief of the joint in two directions such as:

  • Meniscus intervention
  • Cartilage surgery
  • Meniscus refixation
  • Postoperative after patellar or quadriceps tendon ruptures
  • Postoperative after fractures of patella
  • Restraint operations of the patella (e.g. MPFL reconstruction)
  • Nonsurgical therapy of patellar dislocations
  • Cruciate ligament ruptures (conservative / postoperative) 
  • Collateral ligament ruptures (conservative / postoperative) 
  • Knee instability 



Further information

File download


M.4 X-lock® – instructions for patients

M.4 X-lock® – Instructions for medical staff

M.4 X-lock® – therapy with click

Representative Survey

Contact us

Contact for users

Mon. to Thu. 08.00-17.00
Fri. 08.00-16.00



See our FAQ page for more help and information

FAQ page