Understanding Sacroiliac Joint Pain and Available Treatment Options

Sacroiliac joint pain is a common but sometimes overlooked cause of lower back, hip, and buttock pain. Because symptoms can resemble problems involving the lumbar spine, hips, or other structures, identifying the sacroiliac joint as the source of pain can require a careful evaluation.

Understanding what causes sacroiliac joint pain, recognizing its symptoms, and knowing which treatment options are available can help patients pursue an appropriate treatment plan.

What Is Sacroiliac Joint Pain?

Sacroiliac joint pain occurs when one or both sacroiliac joints become irritated or dysfunctional. The sacroiliac joints connect the sacrum, the triangular bone at the base of the spine, with the left and right sides of the pelvis.

These joints help transfer forces between the upper body and legs while providing stability to the pelvis. Although the sacroiliac joints have limited movement, they play an important role in walking, standing, bending, and other everyday activities.

Pain can develop when the joint becomes inflamed, irritated, or subjected to abnormal mechanical stress.

What Causes Sacroiliac Joint Pain?

Sacroiliac joint pain can have several causes, including injury, arthritis, repetitive stress, or changes in the way the body distributes weight.

Common contributors include falls or other trauma, prolonged sitting or standing, leg-length differences, pregnancy, arthritis, and altered movement patterns. Previous surgery involving the lumbar spine can also change the mechanics of the pelvis and increase stress on the sacroiliac joints.

In some cases, there is no single identifiable injury. Instead, gradual wear, inflammation, or changes in biomechanics may contribute to the development of pain.

What Does Sacroiliac Joint Pain Feel Like?

Sacroiliac joint pain commonly occurs in the lower back, buttocks, hip, or pelvic region. The pain may remain on one side or affect both sides.

Patients may describe sacroiliac joint pain as aching, sharp, burning, or stabbing. Symptoms may become worse with prolonged sitting or standing, climbing stairs, getting out of a car, turning in bed, or moving from sitting to standing.

Pain can sometimes extend into the thigh or leg, which may make sacroiliac joint dysfunction difficult to distinguish from conditions such as sciatica or lumbar spine disorders.

How Is Sacroiliac Joint Pain Diagnosed?

Diagnosing sacroiliac joint pain typically involves a combination of medical history, physical examination, and diagnostic testing.

During an examination, a physician may use specific movement and provocation tests to determine whether the sacroiliac joint reproduces the patient’s familiar pain. Imaging studies such as X-rays, CT scans, or MRI may also be used when appropriate to evaluate the spine, pelvis, and surrounding structures.

A diagnostic sacroiliac joint injection can provide additional information. When medication is injected into the joint and temporarily reduces the patient’s typical pain, it can help confirm that the sacroiliac joint is contributing to the symptoms.

What Nonsurgical Treatments Can Help Sacroiliac Joint Pain?

Treatment for sacroiliac joint pain often begins with conservative approaches. Depending on the underlying cause and severity of symptoms, treatment may include physical therapy, activity modification, targeted exercises, and medications when appropriate.

Physical therapy can focus on improving core and pelvic stability, flexibility, strength, and movement mechanics. These approaches may reduce stress on the sacroiliac joint and improve function.

When conservative measures do not provide sufficient relief, interventional pain management treatments may offer additional options.

Can a Sacroiliac Joint Injection Treat Pain?

A sacroiliac joint injection can serve both diagnostic and therapeutic purposes. During the procedure, a physician uses image guidance to place medication directly into or around the sacroiliac joint.

The injection may contain a local anesthetic, a corticosteroid, or both. The anesthetic can provide short-term pain relief and help determine whether the joint is a significant source of symptoms, while the anti-inflammatory medication may reduce inflammation and provide longer-lasting relief for some patients.

The duration and degree of pain relief vary from person to person.

What Other Interventional Treatments Are Available?

When sacroiliac joint pain continues despite conservative treatment and injections provide temporary or incomplete relief, other procedures may be considered.

Radiofrequency ablation is one option for selected patients. This minimally invasive treatment uses controlled heat to disrupt specific nerves that transmit pain signals from the sacroiliac joint region. The goal is to reduce pain signaling while preserving surrounding structures.

For carefully selected patients with persistent, severe sacroiliac joint dysfunction, minimally invasive sacroiliac joint fusion may also be considered. This procedure stabilizes the joint and is generally reserved for patients whose symptoms have been confirmed to originate from the sacroiliac joint and who have not achieved adequate relief through less invasive treatments.

When Should Someone See a Pain Specialist for Sacroiliac Joint Pain?

Persistent lower back, buttock, or pelvic pain should be evaluated when it interferes with work, exercise, sleep, walking, or other daily activities.

A pain specialist can evaluate whether the sacroiliac joint, lumbar spine, hip, or another structure is responsible for the symptoms. Because several conditions can cause similar pain patterns, an accurate diagnosis is important before selecting a procedure or other treatment.

What Is the Best Treatment for Sacroiliac Joint Pain?

The best treatment for sacroiliac joint pain depends on the underlying cause, severity of symptoms, duration of pain, and response to previous treatments. There is no single treatment that works for every patient.

For some patients, physical therapy and activity modification may be sufficient. Others may benefit from image-guided injections, radiofrequency ablation, or, in more advanced cases, minimally invasive joint fusion.

Understanding the source of pain is the first step toward selecting an appropriate treatment. A personalized evaluation can help determine whether the sacroiliac joint is responsible for symptoms and which treatment options may provide the greatest potential for meaningful pain relief and improved function.