Risk factors for developing avascular necrosis include: Trauma. Injuries, such as hip dislocation or fracture, can damage nearby blood vessels and reduce blood flow to bones. Steroid use. High-dose use of corticosteroids, such as prednisone, is the most common cause of avascular necrosis that isn't related to trauma.
Blue Panther Jr. Blue Panther Jr. is the ring name of a Mexican luchador enmascarado, or masked professional wrestler, formerly known as Black Panther. He is working for the Mexican professional wrestling promotion Consejo Mundial de Lucha Libre (CMLL) portraying a tecnico (Good guy) wrestling character.
Up until 2013 Black Panther was depicted in interviews as Blue Panther Jr. or referred to simply as the Son of Blue Panther. He was introduced as Black Panther while wearing a black and blue version of his father's Panther themed mask during a show to honor his father's 35th anniversary as a wrestler in late 2013.