A smart brace is configured to be worn on a limb over the joint and includes a sensor that gathers data related to motion. The sensor can be included in a hinge assembly of the smart brace. The hinge assembly can include a first gear and a first bar and a second gear and a second bar. The first gear can be meshingly engaged with the second gear such that rotation of one causes corresponding rotation of the other. The first bar and the second bar are configured in size and shape to be flexible in a frontal plane and rigid in a sagittal plane. An end of the first bar and an end of the second bar can be received within corresponding recesses of the first gear and the second gear.

A device for articular rehabilitation comprising a first element provided with bars for fastening to the proximal portion of a limb and a second element provided with bars for fastening to the distal portion of a limb, said first element comprising a first and a second spherical shell portion opposite to each other, and said second element comprising a first and a second spherical shell portion opposite to each other, said spherical shell portions being configured to fasten said first and second element by means of spherical hinge coupling and being configured so that the space comprised inside said spherical shell portions, when coupled, is such that the joint object of the rehabilitation is allowed to be received therein.

Disclosed is a knee joint guide apparatus which can be driven even at any point on a plane in which an instantaneous rotation center of a knee joint can be positioned by a self-alignment function, and can also implement output performance required for a walking operation through a mechanical advantage change depending on a flexion angle. The knee joint guide apparatus includes: a proximal body link provided above a knee joint; a distal body link provided at a location corresponding to the proximal body link below the knee joint; and a planar rigid body 6-bar linkage mechanism including a plurality of revolute joints and a plurality of prismatic joints, and a plurality of links between the proximal body link and the distal body link to output a mechanical advantage depending on a flexion angle of the knee joint in movement of the knee joint with a self-alignment function.

A smart brace is configured to be worn on a limb over the joint and includes a sensor that gathers data related to motion. The sensor can be included in a hinge assembly of the smart brace. The hinge assembly can include a first gear and a first bar and a second gear and a second bar. The first gear can be meshingly engaged with the second gear such that rotation of one causes corresponding rotation of the other. The first bar and the second bar are configured in size and shape to be flexible in a frontal plane and rigid in a sagittal plane. An end of the first bar and an end of the second bar can be received within corresponding recesses of the first gear and the second gear.

A polycentric hinge for a knee brace, and knee brace including such hinge. The hinge includes first couple of hinge arms, second couple of hinge arms, and hinge body for hinging together the first couple of hinge arms and second couple of hinge arms. Each hinge arm of the first couple and each hinge arm of the second couple has a first end pivotally enclosed inside said hinge body and a second end pivotally fixed to a mounting frame. The hinge body is provided with pivoting means adapted to engage said first ends to define four different and spaced apart rotation axes extending transversally with respect to a longitudinal axis of the hinge body. The first ends of each hinge arm of the second couple can be connected to each other, so that rotation of the mounting frame causes rotation of both hinge arms around their respective rotation axes.