Total displacement of a bone from its joint is known as what?

Total displacement of a bone from its joint is referred to as dislocation. This occurs when the bones in a joint are forced out of their normal position, which can result in significant pain, swelling, and loss of function in the affected area. Dislocation typically requires medical intervention to appropriately reposition the bones and restore function to the joint.

Subluxation, which is not the correct answer, refers to a partial dislocation where the bones are not completely out of alignment but are misaligned to some extent. A fracture involves a break in the bone, which does not inherently imply displacement from a joint. A sprain, on the other hand, is an injury to a ligament caused by overstretching or tearing, which again does not involve the complete displacement of bone from a joint. Thus, dislocation is the most accurate term for the complete separation of a bone from its joint.