Abstract: An apparatus for stabilizing movement of an ankle comprises in one embodiment a flexible body member for receiving a foot and a stiffening unit secured to selected portions of the body member such that the stiffening unit minimizes movement of upper portions of the body member with respect to lower portions of the body member, without obstructing forward and rearward movement of the upper portions of the body member with respect to the lower portions of the body member.

Abstract: An apparatus for stabilizing movement of an ankle comprises in one embodiment a boot-shaped body member having at least one sheet member fixed against a portion of an interior surface of the body member for preventing movement of the body member relative to the ankle of a wearer. The sheet member having incorporated therein material having a high coefficient of friction such that the coefficient of friction of the sheet member is greater than the coefficient of friction of the interior surfaces of the body member.

Abstract: An adjustable support device for the knee provides in one embodiment a strap, a primary tensioning device positioned on the strap, and a secondary tensioning device carried on the strap. A preferred embodiment of the device includes an elongate bar secured to the strap between first and second ends of the strap by a patch of material, stitching, or any number of known adhesives. The secondary tensioning device may include one or more patches of elastic, or alternatively, inelastic material that provide radially-directed pressure against the knee joint. In another embodiment, the secondary tensioning device provides pairs of ligatures secured to each end of the elongate bar for concentrating radially-directed pressure against the knee joint.

Abstract: An apparatus for stabilizing movement of the patella in the patellofemoral joint comprises in one embodiment a base having an opening, a buttress secured to the base sheet member, a tensioning member secured to the base sheet member, a pair of tensioning arms secured to the buttress, a pair of tensioning arms secured to the tensioning member, a pair of compression members formed from the base, and a stabilizing member secured to an edge of the base. A method of stabilizing movement of the patella in the patellofemoral joint during physical activities comprises in one embodiment the steps of positioning a support brace having an opening against the knee, extending a portion of the brace against the knee to apply a first force against portions of the knee in the opening, and extending another portion of the brace against the knee to apply a second force against the knee.