More than 10 years of experience in the development of functional knee braces: The new M.4s comfort stands for unique product features and extensive workmanship. A completely new dimension in terms of wearing comfort and Stability. Indications: Anterior cruciate ligament rupture, in isolation or with secondary injuries (collateral ligament and/or meniscus lesion), severe instability Complex rupture of the collateral ligament and/or partial cruciate rupture or overstrech Severe collateral ligament instability with meniscus lesion Cruciate ligament reconstruction/repair (ACL or PCL rupture, in isolation or with secondary injuries) meniscus refixation in pre-existing instability of the knee joint