The appropriate time for X-ray and other imaging such as MRI and CT scan is debatable. MRI and CT scan being more expensive (minimum of $800 for MRI), are a lot harder to get done. There is about a 4 months wait list in Canada to get an MRI of your knee for a suspected tear, but if you know someone that knows someone in a hospital, you might be able to get it done in about 2 weeks!
Before going into details, let’s answer a very common question regarding the differences between X-ray, MRI and CT.
For the sake of simplicity, X-ray is good to see bones (fractures), MRI is good to see soft tissues such as muscles, discs (disc herniation), nerves and CT scan is good to see structures such as lungs, sinuses, abdomen and heart. Again, it is not as simple as I explained above, your doctor will ask for a specific imaging based on what he or she would like to see!
![]() |
Ankle (CT Scan) |
![]() |
Ankle (MRI) |
![]() |
Ankle (X-ray) |
So when is a good time to take an X-ray? Rule #1, TRAUMA! A trauma can be a fall, a hit or any impact to your body. For example, if an object falls on your toe, depending on the object, there can be pain, swelling, bruising and potentially a fracture! Rule #2, weight bearing is hell! You cannot support the weight of your body on the injured limb. Rule #3, usually with broken bones, the pain will not get better and sometimes it will potentially get worst even with treatments. Rule #4, you are suffering from some sort of bone disease (metabolic disease) such as Osteoporosis.
Summary:
1. Trauma
2. Cannot stand on it
3. Getting worst or staying the same
4. Underlying bone diseases such as Osteoporosis
True Case at the clinic:
63 years old female comes in the clinic with rib pain after coughing. The pain is not going away. She has a history of Osteoporosis. She was diagnosed after taking x-ray with rib fracture! YES! A fracture with just coughing! So please talk to your doctor.
Dr. Ali Masoumi
www.facebook.com/drmasoumi