4-Point Knee Brace | M.4 X-lock®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. Reliable locking when fully extendes. As a result, axial loading is possible in the extended position The compression resulting from the pressure promotes the stability of the meniscus suture Due to the easy conversion during free movement, initial