What it is (overview)

A Hip Injection with Imaging Guidance is an orthopedic procedure in which a clinician places a needle into the hip joint and injects medication—most commonly a local anesthetic (numbing medicine) and/or a corticosteroid (anti-inflammatory steroid). What makes this different from a “blind” injection is that the needle is guided using real-time imaging guidance, typically ultrasound or fluoroscopy (a type of continuous X-ray). Imaging helps ensure the medication is delivered into the correct space, which can improve accuracy and the chance of pain relief.

This procedure can be both diagnostic and therapeutic. As a diagnostic test, it helps determine whether your pain is truly coming from inside the hip joint (intra-articular pain) versus nearby structures such as muscles, tendons, bursae, or the lower back. As a treatment, it aims to reduce joint inflammation and improve function.

What it “measures” and what results mean:

Unlike a blood test, this procedure doesn’t measure a lab value. Instead, the “result” is based on your symptom response after the injection:

• Significant immediate pain relief (often within minutes to hours) after the local anesthetic suggests your pain is likely coming from the hip joint itself.
• Longer-lasting improvement (often days to weeks or sometimes longer) after a steroid injection suggests that inflammation in the joint (such as from arthritis) is contributing to symptoms.
• Little or no relief may indicate the pain source is outside the joint (for example, referred pain from the spine, tendon problems, or bursitis), or that the condition is less responsive to injection-based therapy.

Imaging also provides procedural confirmation (for example, seeing the needle position and, with fluoroscopy, sometimes contrast dye entering the joint). This confirmation supports accuracy but is not the same as a diagnosis on its own—the key diagnostic information is how your pain changes after the injection.

When & why it's usually done

Doctors commonly recommend a hip injection with ultrasound or fluoroscopy guidance when you have hip or groin pain and the cause is uncertain, or when targeted treatment is needed. Because the hip joint is deep and surrounded by important nerves and blood vessels, imaging-guided injection is often preferred for safety and precision.

This test/procedure may be ordered if you have:

• Hip, groin, buttock, or thigh pain that worsens with walking, standing, climbing stairs, or getting in/out of a car
• Stiffness or reduced range of motion, such as difficulty putting on shoes/socks
• Symptoms suggestive of hip arthritis (osteoarthritis or inflammatory arthritis)
• Unclear pain source where your clinician needs to distinguish hip joint pain from lumbar spine or pelvic causes
• Persistent pain despite conservative treatments such as rest, physical therapy, or anti-inflammatory medicines

Common reasons it’s done include:

• Diagnostic confirmation: to determine whether the hip joint is the primary pain generator
• Pain relief and reduced inflammation: to calm a flare of joint inflammation and improve mobility
• Treatment planning: to guide next steps (e.g., continuing rehabilitation, considering advanced imaging like MRI, or discussing surgical options such as hip arthroscopy or joint replacement)
• Pre- or post-procedure evaluation: to help clarify symptoms before an orthopedic procedure or assess response after treatment

Ultrasound vs. fluoroscopy: Ultrasound uses sound waves (no radiation) and can visualize soft tissues in real time. Fluoroscopy uses X-ray guidance and may use a small amount of contrast dye to confirm the needle is inside the joint; it involves low-dose radiation. Your clinician chooses the method based on your anatomy, local expertise, and clinical question.

Common diseases related to it

• Hip osteoarthritis (degenerative joint disease)
• Rheumatoid arthritis and other inflammatory arthritides affecting the hip
• Synovitis (inflammation of the joint lining)
• Femoroacetabular impingement (FAI)
• Hip labral tear (often evaluated as part of a diagnostic workup)
• Avascular necrosis of the femoral head (may cause hip joint pain; injections may be used selectively)
• Septic arthritis evaluation (in certain settings, joint aspiration/injection under imaging may be used; treatment is urgent and differs from routine steroid injections)
• Crystal arthropathy such as gout or pseudogout (sometimes evaluated with joint aspiration)

Health goals where it may help

• Achieving targeted pain relief to improve daily activities and sleep
• Reducing joint inflammation during arthritis flares
• Improving mobility, walking tolerance, and hip range of motion to support physical therapy progress
• Clarifying the true source of pain (hip joint vs. back/soft tissue) to support accurate diagnosis and avoid unnecessary treatments
• Supporting orthopedic treatment decisions, including readiness for or timing of procedures (e.g., arthroscopy or hip replacement)
• Enhancing overall function and quality of life by enabling safer return to exercise, work, or sport activities when appropriate