Sacroilitis

Sacroiliitis is an inflammation of sacroiliac joints. Sacroiliitis can cause pain in buttocks (superior medial quadrant of the buttock ) or lower back, and can extend down one or both legs.

Prolonged standing or stair climbing can worsen the pain.

Sacroiliac joint pain is a challenging condition affecting 15 to 25 percent of patients with axial low back pain.

It usually presents as pain overlying the sacrum or upper buttock over the SI joint. SI joint pain may refer to the posterior thigh. Pain extending below the knee is unusual, but SI joint pain can refer to the calf, as does facet disease.

The most consistent factor for identifying patients with SI joint pain is unilateral pain (unless both joints are involved) localized predominantly below the L5 spinous process.

Stiffness felt in the hips and low back, especially after getting out of bed in the morning or after sitting still for a prolonged period

Radiation

• Groin
• greater trochanter
• upper lateral thigh
• Below knee
• Posterior thigh
• Tenderness over affected sacroiliac sulcus , most obvious in the prone position , reduction in joint mobility and reproduction of pain when the affected joint is stressed

Treatment Options

Pharmacology
Sacroiliac Joint Injection