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. <EOS>