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.
The most common mechanisms of injury are either direct impact, such as a crushing injury causing a. transverse or comminuted fracture pattern, or a twisting-type injury causing an oblique fracture pattern with. soft-tissue swelling. Chronic direct forces can produce stress fractures.