DO I NEED A SCAN? WHEN X-RAYS & MRIs ACTUALLY HELP (& WHEN THEY DON’T)

One of the most common questions we hear in clinic is:
“Should I get a scan?”

X-rays, MRIs and CT scans can be incredibly useful tools — but they’re also often overused, misunderstood, and sometimes even unhelpful for guiding treatment. Let’s clear up when imaging is valuable, and when it’s unlikely to change your recovery.

What Scans Are Good At

Medical imaging is excellent at identifying serious or structural issues, including:

  • Fractures or suspected bone breaks
  • Significant trauma (e.g. car accidents, high-impact injuries)
  • Suspected infections, tumours, or inflammatory disease
  • Severe or progressive neurological symptoms (e.g. worsening weakness, loss of bowel/bladder control)

In these cases, imaging helps doctors and physios make safe, urgent decisions.

When Scans Often Don’t Add Value

For many common musculoskeletal problems — such as:

  • Low back pain
  • Neck pain
  • Shoulder pain
  • Knee pain
  • Tendon issues

…scans rarely change treatment, especially in the early stages.

Why? Because many findings on scans are normal age-related changes, not the cause of pain.

The Problem With “Findings”

Research consistently shows that people without pain often have:

  • Disc bulges
  • Arthritis
  • Degenerative changes
  • Tendon “tears”

These findings sound scary, but they’re often no more concerning than wrinkles on the skin. When people see these results without context, it can increase fear, reduce confidence in movement, and actually slow recovery.

Pain is influenced by much more than what shows up on a scan — including strength, load tolerance, sleep, stress, and how the nervous system is processing signals.

So How Do We Decide If You Need a Scan?

At CB Physiotherapy, we base this decision on:

  • Your injury history
  • How symptoms developed
  • Your physical examination findings
  • How you respond to initial treatment
  • The presence (or absence) of “red flags”

If a scan will:

  • Change the diagnosis
  • Alter your treatment plan
  • Improve safety or decision-making

…then it’s worth considering.

If it won’t meaningfully change what we do, we’ll usually recommend starting rehab first.

Why Physio Is Often the Best First Step

A thorough physiotherapy assessment can:

  • Identify movement and load issues
  • Guide evidence-based rehab
  • Reduce pain and improve function
  • Help you avoid unnecessary imaging

If progress stalls, symptoms worsen, or red flags appear, we can then help coordinate imaging or referrals as needed.

The Bottom Line

Scans are tools — not answers.
They should support clinical reasoning, not replace it.

If you’re unsure whether you need imaging, a proper assessment is the smartest place to start. We’ll help you understand your pain, guide your recovery, and only recommend scans when they truly add value.