Orthopaedic brace having a range of motion hinge with an adjustable-length strut
View Patent ↗An orthopaedic brace includes a strut length adjustment assembly to change the operable length of the strut for sizing the brace on a patient without the need for special tools or cutting of the strut. The adjustment assembly includes a biased adjustment mechanism that coacts with a plurality of notches in the strut to variably set/position the strut relative to the adjustment assembly to set the struts length. Each upper and lower strut preferably includes a strut length adjustment assembly to independently set the length of each strut. The strut length adjustment assembly retains a strut and includes a strap retention mechanism that is configured to releasably engage the strap.
1. An orthopedic brace, comprising:
an upper support assembly;
a lower support assembly; and
a hinge assembly rotatably connecting the upper and lower support assemblies;
wherein the upper support assembly includes an upper strut operably connected at a first end thereof to the hinge, and an upper wing member slidable with respect to the strut and spaced from the hinge, the upper strut being pivotable about an axis of the hinge, but not translatable with respect thereto, the upper wing member having an inner side configured to face toward a wearer's leg when the brace is worn and an outer side configured to face away from the wearer's leg when the brace is worn, the upper wing member further including a longitudinal channel having a substantially rectangular cross-section that is open along at least a portion of the inner side of the upper wing member and closed along the outer side of the upper wing member, the longitudinal channel slidably receiving the upper strut such that the upper wing member is slidable along the strut between a plurality of indented stop positions to adjust an overall length of the upper support assembly; and
wherein the lower support assembly includes a lower strut operably connected at a first end thereof to the hinge, and a lower wing member slidable with respect to the strut and spaced from the hinge, the lower strut being pivotable about the hinge axis, but not translatable with respect thereto, the lower wing member having an inner side configured to face toward the wearer's leg when the brace is worn and an outer side configured to face away from the wearer's leg when the brace is worn, the lower wing member further including a longitudinal channel having a substantially rectangular cross-section that is open along at least a portion of the inner side of the lower wing member and closed along the outer side of the lower wing member, the longitudinal channel slidably receiving the lower strut such that the lower wing member is slidable along the strut between a plurality of indented stop positions to adjust an overall length of the lower support assembly; and
wherein the upper wing member includes a first locking assembly that selectively fixes a position of the upper wing member with respect to the upper strut among the plurality of indented stop positions of the upper support assembly, and the lower wing member includes a second locking assembly that selectively fixes a position of the lower wing member with respect to the lower strut among the plurality of indented stop positions of the lower support assembly.
2. The orthopedic brace of claim 1 , wherein at least a portion of each of the upper and lower struts comprises a flat, substantially rectangular bar.
3. The orthopedic brace of claim 1 , wherein each of the upper and lower struts includes at least one slot therein, the slot extending in the direction of a longitudinal axis of its respective strut.
4. The orthopedic brace of claim 1 , wherein the hinge is monocentric.
5. The orthopedic brace of claim 1 , wherein the hinge includes at least one of an extension stop for limiting an extension range of the brace and a flexion stop for limiting a flexion range of the brace.
6. The orthopedic brace of claim 5 , wherein a position of the at least one of an extension stop and a flexion stop is adjustable.