M.4®’s OA Compact 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. u003cstrongu003ePostoperativeu003c/strongu003e
  • 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 osteoarthritis knee brace utilizes medi’s unique and strong “s” style frame in the time proven four point configuration and 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. This is the shorter version of our best selling OA brace. the length of this brace is 13.75″.


  • 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 Compact Knee Brace

M.4®’s OA Comfort Compact Knee Brace

Size Chart

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M.4s OA Compact Knee Brace