Hip Pain: Which Scan Do You Need?
The hip is a deep, strong joint that hides its problems well. The good news: imaging sorts hip pain efficiently once you know what each test is for.
Hip pain usually starts with a weight-bearing X-ray for arthritis; MRI follows for suspected occult fractures, labral tears, and AVN when X-rays look normal but pain persists. Ultrasound evaluates bursitis, tendons, and joint fluid. Hip pain that cannot bear weight after a fall needs same-day imaging — a fracture may be hiding from plain films.
Why does hip pain start with an X-ray?
Arthritis is the most common cause of adult hip pain, and X-ray sees it directly — joint-space narrowing, bone spurs, cysts. Standing (weight-bearing) films reveal what lying-down films hide. When X-ray explains the pain, expensive soft-tissue imaging is usually unnecessary, which is why it anchors the pathway.
When does hip pain need an MRI?
When X-rays are normal but pain persists: occult fractures (hiding from plain film, especially with osteoporosis), avascular necrosis (early MRI saves the joint), labral tears in young active patients, and stress injuries in athletes. It is the problem-solver when examination and X-ray disagree with your symptoms.
What is an occult hip fracture?
A fracture that plain X-rays miss — common in older patients with osteoporosis after a fall. The pain is real, weight-bearing impossible, but the film looks clean. MRI reveals it within minutes, and the distinction matters enormously: an occult fracture needs protected weight-bearing or surgery, while waiting for it to declare itself costs painful, dangerous weeks.
What about ultrasound for hip pain?
Excellent for its targets: trochanteric bursitis (outer-hip pain, very common), gluteal and hamstring tendon problems, hip effusions, and guiding injections precisely into the joint or bursa. It cannot see inside the joint itself — labrum, cartilage, and bone marrow belong to MRI — so the tests complement rather than compete.
Hip pain that needs urgent same-day imaging
- Unable to bear weight after a fall, especially over 65 or with osteoporosis
- A hot, swollen hip with fever — possible joint infection
- A cold, pale, or numb leg — vascular emergency
- Severe night pain with weight loss — possible tumor
These presentations skip the routine pathway and go straight to the emergency department.
Frequently asked questions about hip pain imaging
What is the first scan for hip pain?
A weight-bearing X-ray — it diagnoses or rules out arthritis, the most common cause.
Can an X-ray miss a hip fracture?
Yes — occult fractures hide in plain films, especially with osteoporosis. Persistent inability to bear weight after a negative X-ray earns an MRI.
Do I need an MRI for hip bursitis?
Usually not — ultrasound or examination confirms bursitis, and treatment starts without MRI.
What is avascular necrosis of the hip?
Death of bone tissue from lost blood supply — MRI catches it earliest, when treatment can still save the joint.
Which scan for groin pain in athletes?
Often MRI — athletic groin pain frequently involves the labrum, which only MRI sees well.
Will insurance require X-ray before hip MRI?
Commonly yes — the escalation pathway is built into most authorizations.
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Sources
- RadiologyInfo.org (ACR · RSNA · ASRT). How to Prepare for Your MRI Exam. Reviewed June 15, 2026.
- RadiologyInfo.org (ACR · RSNA · ASRT). Body CT. Reviewed June 15, 2026.
- MedlinePlus (NIH). MRI — patient health encyclopedia.
From film to answer, efficiently
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Contact SATMED HealthMedical disclaimer: This article is for education only and is not medical advice, diagnosis, or treatment. Always follow the instructions of your imaging facility and your own physician. If you think you are having an emergency, call 911 (or your local emergency number) immediately.
Please note: SATMED Health is not a medical facility. Please contact your physician with specific medical questions or for a referral to a radiologist. To locate an accredited medical imaging provider in your community, search the ACR accredited facilities database. This website does not provide cost information; imaging costs vary by region.
