M.4®’s OA Comfort Knee Brace

Double upright OA brace for maximum pain relief and stability for varus and valgus conditions



  • Moderate to serve media or lateral osteoarthritis combined with ligament instability
  • Unloading of the medial or lateral compartment
  • Unicompartmental relief before HTO (brace test).
  • Relief of severe, painful bone edema (bone bruising).
  • Relief of painful stress fractures.
  • Permanent relief, where surgery is contraindicated. Postoperative
  • Cartilage surgery/chondroplasty/meniscus refixation/ displacement osteotomy with required postoperative relief of the medial and lateral compartment.

Product Variety

Size Chart
SIDELeft Varus, Right Varus, Left Valgus,
Right Valgus
RETAILERSmedi USA Retailer network
SKUsFind a SKU

The M4s OA Comfort osteoarthritis knee brace modifies the standard 4 point brace concept to create a design that ensures excellent patient compliance and outcomes. It incorporates medi’s patented varus/valgus loading mechanism to provide effective treatment for moderate and more significant symptoms of uni-compartmental osteoarthritis. The unique flex-bar system allows the strut opposing the loading mechanism to flex providing effective pain relief and reduce point-loading pressure and enhance patient comfort. The advantages of the flex-bar, loading mechanism and ability to align the brace to the individual patient combine with the soft-grip padding system and numbered straps to provide exceptional patient satisfaction and high compliance. The hinged thigh bar adds additional comfort.


  • Four-point principle allows for maximum support and stability.
  • Simple to adjust.
  • Lightweight and moldable frame for a secure fit.
  • Skin grip liner material that prevents migration.
  • Range of motion limitation for flexion and extension.
  • Flex-bar enhances patient comfort and compliance.


M.4®’s OA Comfort Knee Brace

M.4®’s OA Comfort Knee Brace

Size Chart

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M.4s OA Comfort Knee Brace