The sacroiliac joint is in the low back where the spine meets the pelvis. Sacroiliac joint pain is discomfort in this area. This pain is a symptom that may come from a number of conditions or diseases.
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Pain may start in the joint, or in surrounding ligaments or nerves. Ligaments are bands of tissue that connect one bone to another. The sacroiliac joint has many nerve endings. The nerves send pain signals to the brain. Pain in this region may be caused by many factors. Twisting, bending, or moving in a way that triggers sacroiliac joint painInfection of the jointOsteoarthritis
of the joint, which is more common in older adults
, such as an auto accident
, which is common
Inflammation of the joint, which can occur with
Factors that may increase your chance for sacroiliac joint pain include: Weak musclesBending or twisting the backImproper lifting
Inflammatory conditions, such as ankylosing spondylitis or
Sacroiliac joint pain may cause: Mild-to-severe low back painPain in the buttocksPain that seems deep in the pelvisPain in the hip or groin or back of the thighPain that radiates down the leg on the affected sideStiffness of the lower spineCertain activities may increase the pain, such as walking, twisting, or bending
The doctor will ask about your symptoms and medical history. A physical exam will be done. Finding the source of sacroiliac joint pain is often difficult. Tests depend on your medical history and the suspected cause.
Tests may include:
Imaging tests with
CT scanJoint injections or nerve blocks—drug injection to determine if the pain starts in the joint
Treatment depends on the cause of the pain. Any underlying condition would receive treatment specific for that disease. Regardless of the cause, short-term rest is often advised.
Talk with your doctor about the best treatment plan for you. Options may include one or more of the following:
Your doctor may recommend: Over-the-counter pain relievers, such as acetaminophen or other non-steroidal anti-inflammatory medications (NSAIDs)Prescription pain relieversMuscle relaxantsSteroid injections into the sacroiliac joint
Physical therapy may include: Exercises to stretch the muscles of the lower backExercises to strengthen the muscles which support the areaExercises to affect the motion of the sacroiliac jointApplying ice to the painful areaApplying deep heat to the sore area
To reduce your chance of developing sacroiliac joint pain, take these steps: Exercise regularly to keep muscles strongMaintain good postureUse proper techniques for bending, lifting, or playing sports
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Last reviewed June 2013 by John C. Keel, MD
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.
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