Sacroiliac Joint Pain

(Joint Pain, Sacroiliac)

Definition

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.
Sacroiliac Joint
sacroiliac joint
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Causes

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 pain
  • Infection of the joint
  • Osteoarthritis of the joint, which is more common in older adults
  • Trauma , such as an auto accident
  • Stress fractures , which is common in athletes
  • Pregnancy
  • Inflammation of the joint, which can occur with ankylosing spondylitis

Risk Factors

Factors that may increase your chance for sacroiliac joint pain include:
  • Weak muscles
  • Bending or twisting the back
  • Improper lifting
  • Inflammatory conditions, such as ankylosing spondylitis or psoriatic arthritis
  • Falling or taking awkward steps off a curb or step

Symptoms

Sacroiliac joint pain may cause:
  • Mild-to-severe low back pain
  • Pain in the buttocks
  • Pain that seems deep in the pelvis
  • Pain in the hip or groin or back of the thigh
  • Pain that radiates down the leg on the affected side
  • Stiffness of the lower spine
  • Certain activities may increase the pain, such as walking, twisting, or bending

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