A device for applying pressure to at least one bone of a human arm, the device comprising: a first side arm having a first end and a second end; a second side arm having a first end and a second end, the first end of the second side arm being pivotably coupled to the first end of first side arm; a linear member having a first end and a second end, the first end of the linear member being connected to the second end of the first side arm, and the second end of the linear member slidingly connected to the second end of second side arm; a cam pivotably coupled to the second end of the linear member, the cam contacting a surface of the second end of the second side arm; and a lever arm coupled to the cam, the lever arm being movable between: a first position in which the lever arm positions the cam member to apply a first pressure to the surface of the second end of second side arm; at least one of the first side arm and the second side arm being configured to transmit the first pressure to the at least one bone of the human arm; and a second position in which the lever arm positions the cam member to apply a second, larger pressure to the surface of the second end of the second side arm and reduce a distance between the second end of the second side arm and the second end of the first side arm; at least one of the first side arm and the second side arm being configured to transmit the second, larger pressure to the at least one bone of the human arm. a first side arm having a first end and a second end; a second side arm having a first end and a second end, the first end of the second side arm being pivotably coupled to the first end of first side arm; a linear member having a first end and a second end, the first end of the linear member being connected to the second end of the first side arm, and the second end of the linear member slidingly connected to the second end of second side arm; a cam pivotably coupled to the second end of the linear member, the cam contacting a surface of the second end of the second side arm; and a lever arm coupled to the cam, the lever arm being movable between: a first position in which the lever arm positions the cam member to apply a first pressure to the surface of the second end of second side arm; at least one of the first side arm and the second side arm being configured to transmit the first pressure to the at least one bone of the human arm; and a second position in which the lever arm positions the cam member to apply a second, larger pressure to the surface of the second end of the second side arm and reduce a distance between the second end of the second side arm and the second end of the first side arm; at least one of the first side arm and the second side arm being configured to transmit the second, larger pressure to the at least one bone of the human arm. a first position in which the lever arm positions the cam member to apply a first pressure to the surface of the second end of second side arm; at least one of the first side arm and the second side arm being configured to transmit the first pressure to the at least one bone of the human arm; and a second position in which the lever arm positions the cam member to apply a second, larger pressure to the surface of the second end of the second side arm and reduce a distance between the second end of the second side arm and the second end of the first side arm; at least one of the first side arm and the second side arm being configured to transmit the second, larger pressure to the at least one bone of the human arm.