In an embodiment, a prosthetic leg including a modular knee element coupled to a modular ankle element. The modular knee element includes a knee motor rotatable about an axis of a shaft in the knee motor. The modular ankle element includes a drive portion coupled to a surface-contacting portion via a pylon having a top and bottom end. The top end is coupled to the drive portion and the bottom end is coupled to the surface-contacting portion. The drive portion includes an ankle motor coupled to a rotary series elastic actuator (RSEA) and a first pulley coupled to the RSEA. The surface-contacting portion includes a hinge and a second pulley with a belt engaging at least a portion of at least one of the first and second pulley, and a modular foot element coupled to the bottom of the hinge.

A joint for a prosthesis comprises a prosthesis part and a body part. The two parts are connected by a connection part. A first pair of engaging sets of abutments is provided on the connection part and the prosthesis part and a second pair of engaging sets of abutments is provided on the connection art and the body part. By adjusting position of the connection part, the first pair of sets are disengageable and by further adjusting the position, the second pair of sets are also disengageable. This allows for adjustment of the joint at two levels. A prosthesis includes two stripes of resilient material of which at least one has a curved part and a straight part. The joint is provided at a distal end, at the concave part of the strips. At straight parts, the strips cross and one strip extends beyond the other.

The invention relates to a system composed of a prosthetic-foot insert (1), comprising: a proximal attachment device (2) for fixing the prosthetic-foot insert (1) on a stump or a prosthetic component; and at least one sole element (3), which is connected to the attachment device (2); wherein the system comprises a plurality of different force-transmission elements (4, 5), which can be fastened to the at least one sole element (3) at at least one fastening region (34, 35) and comprise various distal sole contours (41, 51) and/or various force-transmission regions (42, 52).

One aspect of the invention provides a prosthetic foot including a heel member, a toe member, and an attachment member comprising a shear thickening material (STM). In one embodiment, the attachment member has a first end and a second end. The first end can be connected to the heel member, and the second end can be connected to the toe member. In another embodiment, the attachment member further comprises an elastic polymer. In one instance, the elastic polymer is impregnated with the STM. In yet another embodiment, the attachment member further comprises an elastic reservoir. The elastic reservoir can contain the STM. Alternatively, the attachment member further comprises a rigid reservoir. The rigid reservoir can contain the STM.

A prosthetic foot includes a heel member and a forefoot member. An ankle member receives the heel member and forefoot member shaft so as to allow the heel member and forefoot member to translate independently of one another.

A self-aligning prosthetic foot and ankle assembly has an ankle unit pivotally mounting a foot component. The ankle unit contains a hydraulic piston and cylinder assembly having a piston which is linearly movable within a cylinder. The axis of the cylinder is coincident with a shin axis defined by a shin connection interface on the ankle unit. Bypass passages containing damping resistance control valves provide continuous hydraulic damping of dorsi and plantar ankle flexion, the unit being such that, over the major part of the range of damped movement, there is no resilient biasing in either the dorsi or the plantar direction. This confers a number of advantages, including stabilisation of standing, balance control, and improved stair-walking and ramp-walking.

A prosthetic foot device (1) having a longitudinal direction (L) and a transverse direction (T) and comprising a base spring blade (2), an ankle spring blade (3) being made from a composite material comprising glass fibres and a heel spring blade (4), the base spring blade (2) and the ankle spring blade (3) being connected in a forefoot region (5) of the prosthetic foot device (1), the base spring blade (2) and the heel spring blade (4) being connected in a heel region (7) of the prosthetic foot device and the ankle spring blade (3) and the heel spring blade (4) being connected in an ankle region (9) of the prosthetic foot device.

A hollow tubulous composite structure and method for prosthetic limbs is described.

A split toe blade comprising a medial toe member, a lateral toe member that is disposed adjacent to the medial toe member, and a connecting web that is disposed between the medial toe member and the lateral toe member. The preferred connecting web controls the amount of traverse compliance in the event an off-axis load is applied to the blade. A method comprising providing a split toe blade and applying an off-axis force to the blade.

A prosthetic joint system for users comprising a housing having an interior cavity, a center axis in said interior cavity, and an attachment means for fixedly connecting said housing to said user; an inner cylinder disposed in said housing interior cavity wherein said inner cylinder rotates around said center axis of said housing; an appendage attached to said inner cylinder; a sensor system attached to said appendage; and a dampening system, having a power source, in communication with said sensor system, said inner cylinder, and said housing for controlling dampening of the rotation of said inner cylinder around said center axis of said housing.