14.2.1 Background properties: 'background-color', 'background-image', 'background-repeat', 'background-attachment', 'background-position', and 'background'. This property sets the background color of an element, either a <color> value or the keyword 'transparent', to make the underlying colors shine through.
1 A spiral fracture happens when the break spirals around the bone, which can happen if the bone is twisted. 2  A compression fracture happens when vertebrae in the spinal column are pushed together in an accident or because of osteoporosis.
Bone fractures may occur at many different angles depending on the direction in which a force is applied to a bone. 1  Transverse fractures form perpendicular to the long axis of a bone and are the result of a force applied at a right angle to the bone. Oblique fractures are slanted fractures that occur when a force is applied at any angle other than a right angle to the bone. Spiral fractures are the result of an extreme twisting force being exerted on a bone.