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.
A pars fracture occurs when the bony pars interarticularis breaks. This type of spinal fracture causes spondylolisthesis; a forward slip or slide of one vertebral body over the one beneath. This educational article explains and illustrates the anatomy of the low back involved, and describes the causes, diagnosis and healing of these related lumbar conditions.