Prosthetic feet that allow for heel height adjustment and/or provide metatarsal joint functionality to more closely mimic natural human feet are provided. A prosthetic foot can include an ankle module having a locking mechanism configured to lock the heel at a particular height. The prosthetic foot can also include a toe region that adapts to varying heel heights. The ankle module and/or locking mechanism can be adjusted, controlled, and/or locked via a hydraulic mechanism. The toe region can curve upward relative to a portion of the foot proximal of the toe region.

A conditional braking knee includes an upper member configured to couple to a prosthetic socket. A braking member couples to the upper member. A lower member couples to the braking member and is configured to rotate with respect to the upper member. A flexion coupler couples to the braking member and is configured to couple to a prosthetic foot. The braking member is configured to prevent a rotation of the upper member relative to the lower member in response to a flexion of the prosthetic foot communicated to the braking member through the flexion coupler. In implementations the braking member is a clamping member rotatably coupled to the upper member with a first axle, the lower member is rotatably coupled to the clamping member with a second axle, and the clamping member prevents a rotation of the upper member relative to the lower member by clamping on the first axle.

Technology is described to provide a foot and ankle prosthesis for individuals with lower limb loss. This technology is able to store and release energy and individuals or patients who are using the foot/ankle prosthesis may be able to expend less energy when walking. The system includes a hydraulic damper attached to dynamic energy storing spring elements. The axis of rotation of the system can be near to that of an intact human ankle, providing biomimetic function. The system can utilize spring elements based on the vertical displacement of the center of pressure of an intact normal foot. A hydraulic system can provide user adjustable heel height and adaptation to inclines. The dorsiflexion and plantar flexion resistances can be independently adjusted manually or electrically. In addition, the system can be automatically locked in dorsiflexion when loaded and unlock when unloaded.

The invention relates to a joint for an orthopedic device. The joint has a first joint part (38), a second joint part (34), which is pivotally arranged on the first joint part (38) about a pivot axis (36) in a pivoting region, and a hydraulic system with at least one first cylinder (2), which has a first longitudinal axis and is arranged in the second joint part (34), and a first piston (20) which is positioned in the cylinder (2), wherein the first piston (20) is arranged on a first securing point (64) of the first joint part (38) such that the first piston (20) carries out a movement along the first longitudinal axis of the first cylinder (2) and a tilting movement when the first joint part (38) is pivoted relative to the second joint part (34).

Technology is described to provide a foot/ankle prosthesis for individuals with transfemoral limb loss. This technology is able to store and release energy and thus individuals or patients who are using the foot/ankle prosthesis are able to expend less energy when walking or running. The device or system can include a prosthetic foot/ankle system with a linear or rotary hydraulic damper such that the hydraulic damper is attached to dynamic energy storing spring elements. The axis of rotation of the system can be near to that of an intact human ankle. The system can utilize spring elements based on the vertical displacement of the center of pressure of an intact normal foot. The system can also provide user adjustable heel height.