In combination with a knee brace, the variable radius spring assembly of the present invention provides a full range knee orthotic with support to the leg muscles without compromising the range of motion and the patient's normal walk/gate. The assembly comprises upper and lower hinge pieces attached to upper and lower sections of the brace, a spring bracket, and an elongated spring element that extends downward from the upper hinge piece past a catch on the lower hinge piece. Two such assemblies are attached to a knee brace, one on the inner side and one on the outer side. As the lower leg, and the lower hinge piece, move rearward, the catch forces the spring element rearward and slides downward along the spring element. Consequently, the spring element has a non-linear response requiring approximately the same about of force to deflect the spring element throughout its range of rearward travel.

A garment for providing orthopedic support or therapy to a human body may include a tubular flexible element and a tension strap. The tubular flexible element may be disposed around at least some portion of a human body and include flexible and a touch fastener portions. The flexible portion may be at an exterior of the tubular flexible element and cover a first portion of the body. The touch fastener portion may be at the exterior of the tubular flexible element and cover a second portion of the body. The tension strap may include first and second ends, where the first end includes a first touch fastener to be coupled with the touch fastener portion at a first location, and the second end includes a second touch fastener to be coupled with the touch fastener portion at a second location, thereby applying tension between the first and second locations.

A model-based neuromechanical controller for a robotic limb having at least one joint includes a finite state machine configured to receive feedback data relating to the state of the robotic limb and to determine the state of the robotic limb, a muscle model processor configured to receive state information from the finite state machine and, using muscle geometry and reflex architecture information and a neuromuscular model, to determine at least one desired joint torque or stiffness command to be sent to the robotic limb, and a joint command processor configured to command the biomimetic torques and stiffnesses determined by the muscle model processor at the robotic limb joint. The feedback data is preferably provided by at least one sensor mounted at each joint of the robotic limb. In a preferred embodiment, the robotic limb is a leg and the finite state machine is synchronized to the leg gait cycle.

A support for an area of a body having a hinge joint includes: a flexible, elastically stretchable framework configured to extend across the hinge joint of the area of the body; and a hinge mechanism affixed to the framework. The hinge mechanism includes a strut component and a first arm component connected to the strut component such that the first arm component is rotatable relative to the strut component only about a first pivot axis. A second arm component is connected to the strut component such that the second arm component is rotatable relative to the strut component only about a second pivot axis. The strut component is configured to extend with the framework across the hinge joint such that the first pivot axis is located on a first side of the hinge joint and the second pivot axis is located on a second, opposite side of the hinge joint.

According to the invention, a system for increasing the effectiveness of a mechanical joint brace worn by a user is disclosed. A sleeve may fit around, and to either side, of a user's joint. The sleeve may include a first portion which applies compressive pressure on a proximate side of the joint, a second portion disposed around the joint, and a third portion which applies compressive pressure on a distal side of the joint. A first set of pads may be disposed and compressed between at least a first portion of a mechanical joint brace worn over the sleeve and the proximate side of the joint. A second set of pads may be disposed and compressed between at least a second portion of the mechanical joint brace worn over the sleeve and the distal side of the joint.

A knee brace for assisting the extension or flexing of a limb comprises substantially rigid upper and lower frames connected by a hinge, the upper frame being secured to the leg by an upper strap. A stabilizing strap for fixing the lower frame to the user's leg comprises an inelastic band, cord or other flexible securing member for circumscribing the user's leg having a fastening element for fixing the securing member in a set position. The securing member is affixed to the arms of the lower frame, slidably extending through at least one strap support provided by at least one of the arms of the lower frame. When the brace is in position on a user's leg the stabilizing strap is able to move through at least one strap support in a generally horizontal direction while supporting the lower frame in the vertical direction.

A brace configured for attachment to a joint of a subject is provided. The brace includes a first arm having a first end and a second end. The brace includes a second arm having a first end and a second end. The brace includes a hinge assembly coupling the first end of the first arm with the first end of the second arm such that the first arm and the second arm are movable to different relative angular orientations. The brace includes a potentiometer coupled to the hinge assembly. A method of monitoring a relative angular orientation of a first arm of a brace relative to a second arm of the brace is also provided. The method includes monitoring an output of a potentiometer coupled to one of the first arm and the second arm.

A movement limiting system for supporting, aligning, preventing, or correcting deformities includes a calf shell that is adapted to form around a calf of a human user. A heel shell is adapted to form around a heel of the human user. A calf shell flap is connected to a calf shell ring. A heel shell flap is connected to a heel shell ring. A cord has a first end and a second end. The first end is connected to the calf shell ring and the second end is connected to the heel shell ring. Additionally, the cord can be connected to a user's leg at one end and a walker at the other end.

A knee orthosis (1) for support of a knee joint in the case of instability comprises a thigh portion (4), which is attachable on the thigh, and a lower leg portion (5), which is attachable on the lower leg, which lower leg portion (5) is provided with splint elements (12), which are connected in an articulated way, via articulation means (13), to hinge plates (14) attached on the thigh portion (4). The lower leg portion (5) has a lower half shell (9), which in the region remote from the knee is borne in the splint elements (12) in a way pivotable about a pivot axis (15). Via a longitudinally stable, flexible traction (17) the lower half shell (9) is pushed ventrally against the lower leg, the pressure increasing with bending of the knee. An optimal support of the knee joint is thereby achieved, especially when the cruciate ligaments are injured.

An improved joint support for limiting the range of motion of an anatomical joint comprises intermeshing gears for allowing adjustment of the range of motion of the joint, and comprises plural mechanisms for securing the gears in engagement with one another, whereby adjustment can be made without tools and without disassembly of any components.