Hard frame with pivotable bridge

A hard frame (100) for a joint-bridging extremity joint orthosis, comprising:

• two mutually opposed longitudinally extending joint splints (110, 120), which are connected to one another via their proximal joint arms (113, 123) via a transverse proximal bridge arch (310) and there form a proximal extremity holder (300) and further are connected to one another via their distal joint arms (112, 122) via a transverse distal bridge arch (210) and there form a distal extremity holder (200), wherein the joint splits (110, 120) each has a central joint (111, 121), and belt straps (350, 250) configured for fixing an extremity to be supported on the respective proximal and distal holders (300, 200) of the hard frame (100), wherein at least one of the proximal and distal bridge arches (210, 310) is rigid and is pivotably mounted on each joint arm ends (114, 124) of the connected distal and/or proximal joint arms (112, 122) in joints (220) about at least one pivot axis (222), and this pivot axis (222) extends toward the connection of the two joint arms (112, 122) connected via the respective rigid proximal and/or distal bridge arch (210), wherein each of the joints (220) for pivoting the at least one of the proximal and distal bridge arches about the at least one pivot axis (222) is limited by an elongated hole (216) in end sections (212) of the rigid proximal and/or distal bridge arch (210) and a sliding pin (226), the sliding pin (226) is fixed to the respective joint arm end (114, 124) and slides in the elongated hole (216), and the elongated hole (216) is oriented in a vertical direction and limits a pivoting range of the at least one of the proximal and distal bridge arches to 5 degrees to 20 degrees, wherein at least one joint arm end (114, 124) is formed as a spring leaf, which allows a resilient tilting of this joint arm end (114, 124) from a primary pivoting plane of the joint splint (110, 120), the at least one joint arm end (114, 124) is mechanically fixedly coupled to the corresponding joint arm (112, 122) using a pair of rivets (116), and the sliding pin (226) and a pivot pin (224) are also correspondingly formed at a posterior and anterior position, respectively, in the at least one joint arm end (114, 124), and wherein at least one fixable tilting joint (115) is additionally formed in at least one of the joint splints (110, 120) for tilting at least one of the joint arms (112, 113, 122, 123) from the primary pivoting plane of the at least one of the respective joint splints (110, 120).