A joint with adjustable angular range for a knee brace or other orthopedic braces with two uprights or rods fitted as auxiliary supports for the joints of the human body. The rods consist of two plates connected with rivets, which represent the four joint points of the articulated four-sided figure between the lower upright and the upper upright. Between the plates and the uprights wedges are inserted shaped to the necessary angular range. There is at least one groove and a lowered area which accommodates two teeth of respective tabs located at the two ends of a spring fixed to the outer plate.
