Why Do I Still Recommend an X-Ray, Even After You've Had an MRI?

In clinic, I often encounter two kinds of urgency.

One is the patient who arrives with a referral and says, "Doctor, my other physician said I should come here for an MRI. The images are clearer." Sometimes they want the scan scheduled before they've even finished describing their symptoms.

The other is even more common: the patient already has MRI images in hand, sits down, and asks right away, "Doctor, the scans are right here. Can we just discuss surgery?" And when I suggest getting an X-ray first, the immediate reply is often, "I already have an MRI. Why would I need an X-ray too?"

I completely understand the desire to resolve pain quickly. But in clinic, I often smile and ask the patient to slow down just a little: "I will absolutely look at the images, but before that, let me hear from you what's bothering you the most right now, otherwise I'm afraid I'd just be treating the scan instead of the patient."

This is a principle I take very seriously and have always held to: we treat the patient, not the image.

Imaging matters, but it's only one part of the overall judgment. What truly determines whether surgery is needed, and how it should be planned, requires placing the current symptoms, the physical exam, and the appropriate imaging all in the same context. That's exactly why, even with an MRI already done, I'll often still recommend an X-ray.

One advantage of X-ray is that it provides fast, immediate information, letting me get an overall sense of the structure and direction before deciding whether further imaging is needed. MRI is always taken lying down, and it's extremely valuable for the detail it shows in nerves and soft tissue. But X-ray can answer questions MRI often can't, such as the overall alignment and stability of the spine, whether there's kyphosis or scoliosis, and how severe any deformity is. These directly shape my judgment about the extent and approach of any surgery.

Another difference that's often overlooked, but very important, is posture during the scan. MRI is taken lying down, but most of our lives happen standing or sitting. I often tell patients: "If it hurts when you stand, if it hurts when you walk, then I need to see what's actually happening in your spine while it's bearing your body weight." A standing X-ray often reveals instability, slippage, or worsening deformity under load. These are things a supine MRI doesn't easily show.

I'd also like to point out something else that's often overlooked: the location of pain isn't necessarily the same as the source of the problem. Clinically, it's quite common for lower back pain to actually originate from the hip joint; focusing only on lumbar spine imaging can easily lead the diagnosis astray. That's exactly why I place so much weight on first understanding the symptoms clearly and completing a physical exam, before deciding where and how the imaging should be done.

So when I ask you to first describe your symptoms, undergo a physical exam, and then get an additional X-ray, it's not because I'm dismissing the MRI you already have. It's because I want to complete the picture, so the decisions that follow can be more precise.

The value of a test isn't in its price or its perceived sophistication. It's in whether it can answer the question that matters most right now. Good medical decisions come from a thorough, complete evaluation process; only by seeing the whole person, and seeing the full picture, can we make the right choice for the patient at the right time.