Mr. B. is а mаintenаnce wоrker at a cоmmunity cоllege. While changing light bulbs in an overhead fixture in a stairway in one of the buildings on campus, he lost his balance, fell from a ladder, and experienced a fracture of his leg. You have been asked to review his case for Worker's Compensations purposes. You note that the physician has described the injury as a "complicated fracture of the left femur." This means that the break in the bone_______________.