A non-slip self-supporting orthopedic device that is a crutch or a walking stick, the orthopedic device comprising:
- a rod having a lower end provided with an elastomeric foot and an upper end provided with a handle configured to be grasped by a user;
- and
- a movable mechanism provided in proximity to said lower end of said rod, the movable mechanism comprising:
- an upper disk including a circular crown provided with a plurality of spokes firmly connected to a central disk provided with a central hole that is concentric with the circular crown of said upper disk, the upper disk configured to be slidingly engaged with said rod of said orthopedic device, said upper disk being externally provided with at least a first hinge,
- a lower disk including a circular crown provided with a plurality of spokes firmly connected in proximity to said lower end of said rod of said orthopedic device such that said elastomeric foot projects downwards, said lower disk being externally provided with at least a second hinge
- a plurality of arms, each of the arms including an upper element, a lower element, and a central spring configured to rotatably connect said upper element to the corresponding lower element, said central spring including a mechanical element configured to be elastically deformed when subjected to a load and configured to return to its initial configuration when released;
- said upper element of each of the arms being provided with an upper end firmly and rotatably connected to said first hinge of said upper disk, said lower element of each of the arms being provided with a lower end configured to be rotatably engaged, by a non-permanent connection system, with said second hinge, said central spring, when released, being configured to hold said upper element and said lower element of each arm in a folded configuration, wherein, due to the rotation of the upper element around said first hinge and said central spring and of the lower element around said second hinge and said central spring, an external surface of each lower element contacts a floor, and said upper disk and said lower disk contact each other,
- said movable mechanism being configured to take an enlarged configuration in which said upper disk contacts said lower disk (20) and each of said arms is in said folded configuration, said movable mechanism being configured to take an elongated configuration in which the upper element and the lower element of each arm are vertically aligned and coaxial with each other in an axial configuration, and said upper disk is located at a distance from said lower disk corresponding to the length of said arms in said axial configuration, said elongated configuration occurring following the user pressing a button located at said handle of said orthopedic device, said button being connected to a kinematic mechanism configured to act on said upper disk by determining its upward movement and spacing from said lower disk, thus causing said arms to take said axial configuration, said connection system, located at the lower end of the lower element of each arm being configured to allow disconnection of the lower elements of the arms that are preselected from said second hinge, to cause the entire arm to lift in a vertical position by rotation around said first hinge.