Skull crusher exercise is included to develop the tricep muscles, but it comes woth maby risks. the barbell put the elbow and wrist joints in an uncomfortable position and the elbow path and barbell path do not match this puts lots of stree in elbow joint and later on peope suffer from elbow injuries. in this exercise barbell moves in straight down and up where as the elbow moves in an angled plane. triceps muscles line of pull and line of pull of the load do not match ad they dont move in a sam