Abstract: A prosthetic knee joint including stance-phase control means comprising lock or latch for holding the knee in a straight condition, and means determining the status of the latch, said status determining means defining a control axis located so that the lock or latch is activated when a load imposed on the joint passes through a line posterior to said axis, and is de-activated when the load passes through a line anterior to said axis.

Abstract: A prosthetic knee joint including stance-phase control means comprising lock or latch for holding the knee in a straight condition, and means determining the status of the latch, said status determining means defining a control axis located so that the lock or latch is activated when a load imposed on the joint passes through a line posterior to said axis, and is de-activated when the load passes through a line anterior to said axis.

Abstract: A coupling, for example, for an orthotic brace has a cam member with a first planar bearing face journalled for rotation on a planar bearing surface of a first coupling portion, and a second planar bearing face inclined to the first face and journalled to rotate relative to a planar bearing surface of a second coupling portion. A clamping device urges the faces and surfaces together to exert a frictional reaction retaining the cam member in a selected rotational position and retains the coupling portions rigidly opposed towards the cam member.

Abstract: An exercise equipment for use by people in wheelchairs has a stationary frame within which a user can readily located their wheelchair, including attachment structure for securing the lower body of the user to the chair. A guide frame pivotally secured to the stationary frame is readily adjustable in its angle of inclination, which angle defines the plane of displacement in which weight-lifting exercise is performed by the user. A load bar is secured to the guide frame, for displacement therealong by the user, in carrying out their selected exercise. The load bar is connected by its ends in load transfer relation with two sets of selectively adjustable weights. Use of a load bar in sliding relation with a guide frame diminishes the risk of loss of control of the weights. The equipment may be readily used and adjusted in relation to the angle of lift and the required weight load, by a majority of users, despite significant incapacitation.