M.4S OA Knee Brace (medi Orthopedics)


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. Additionally the M4s OA is available in a compact version for patients with shorter legs or a need to wear the brace above select footwear such as ski boots.

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The M.4s OA is a 4-point knee brace for control of anterior and posterior tibial translation offering a 3-point off-loader for varus or valgus pressure relief. It offers protection, stabilisation and pain relief whilst restoring mobility. The 4-point principle counteracts knee instability, often a cause of osteoarthritis. It safeguards against hyperextension and offers limitation of flexion and extension. The “S” profile improves torsional stability whilst following the natural alignment of femur and tibia.
  • Straps are numbered to ensure a simple fastening sequence
  • It has excellent comfort with soft-grip padding
Also available as compact version:
2“ shorter overall (1“ shorter on thigh and calf portions). Specifically developed for smaller patients and active patients who prefer wearing a brace while participating in sports such as skiing or motocross.
M.4s OA varus or valgus?
Material Composition
Avional, Velours, Polyester, PU foam
Washing Instruction

Can be washed by hand at 30 degrees.

Additional information


Extra Small, Small, Medium, Large, XL, XXL


Left, Right


Valgus, Varus