Adjustable ergonomic brace

A hinge assembly for orthopedic use, the hinge having a center axis and assemblies for first and second rotational directions, comprising:

• first and second arms having first and second stop surfaces, respectively;
• a hinge plate forming an arcuate array of stop recesses facing or opening toward the center axis of said hinge, the hinge plate connecting to the first and second arms;
• a movable stop pivoted about the center axis and having a stop member, an outwardly biased locking member for engaging the stop recesses and slidably biased within and relative to the stop member, and a release button connected to the locking member and slidably biased within and relative to the stop member, the release button extending radially outwardly beyond the periphery of the hinge plate and being movable inwardly to shift the locking member out of the stop recesses to permit angular adjustment of the stop;
• a spring contained in the stop member and biasing the locking member and release button away from the center axis;
• wherein the stop is arranged to engage with at least one of the first and second stop surfaces.