Answer;
-Spiral fracture
Explanation;
-A spiral fracture is a type of complete fracture. It occurs due to a rotational, or twisting, force. Complete fractures are categorized based on the way the bone breaks. Spiral fractures are caused by torsion or twisting of a long bone along its long axis.
-Spiral fractures are serious bone fractures because the bone is broken in complicated patterns and sometimes splinters making a spiral fracture very difficult to treat.