1. Orthosis for the treatment of injuries in knee and elbow joints, comprising at least one support structure (1) and a support pad (2) that is attached to the support structure (1)； wherein said clamping structure (1) comprises an anchoring device； characterized in that: - the support structure (1) is formed by a first injected plastic material and the support pad (2) is formed by a second injected plastic material； - comprises a rigid body (3) configured by a third plastic material that is compatible with the first and second plastic materials； - the fastening structure (1) comprises a belt (1a) and a head (1b) to which the rigid body (3) and the support pad (2) are completely attached； which has been attached to said head (1b) during injections of the first and second plastic materials； where the second plastic material of the support pad (2) is more elastic and soft than the first plastic material of the support structure (1)； - the rigid body (3) is embedded in the first material of the clamping structure (1) and comprises at least one annular part (3a) that surrounds the support pad (2).
