The sacrum is the base of the spine. It is made up of 5 vertebrae that do not articulate or move like the rest of the spine. The vertebrae that make up the sacrum and coccyx are fused together. The bones of the pelvis are formed by two large bones called the iliac bones. The iliac bones are connected to the sacrum and are not flexible.
If you have symptoms of pain in your lower back or hip, usually on one side, with an increase in pain after standing or bending and relief of your pain when you are lying down, your pain may be caused by problems with the sacroiliac joint.
Although pelvic fractures occur in major trauma, this is not usually the etiology of sacroiliac joint pain. Women who are pregnant will experience widening of their pelvis as the approach delivery. The ligaments that connect the sacroiliac joint may stretch, causing pain and inflammation. Some patients with this type of pain may have a slight difference in the length of their legs, which causes abnormal pressure on one of the SI joints. Arthritic pain and degeneration of the cartilage that cushions the joint is another cause of pain that occurs as some people age. Tightness in the muscles of the low back may also cause inflammation and pain. A specific arthritic disease known as ankylosing spondylitis, which often fuses the bones of the spine together, may also cause fusion and pain in the sacroiliac joint.
An initial occurrence of pain in the SI joint may be treated conservatively at home through rest and anti-inflammatory medications. However, if your pain lasts longer than a few days, increases in severity, or is the result of a traumatic injury, you should call a specialist today for evaluation and initiation of treatment. We offer weekday and weekend appointments. You can find us at our conveniently located clinics in West Orange, Aberdeen, and Lyndhurst.