🦵 X-ray of a knee joint
An X-ray of the knee shows the bones and joint space, helping doctors check for injury or disease.
🦴 What you see on a knee X-ray
Key structures:
- Femur (upper bone)
- Tibia (main lower bone)
- Fibula (smaller side bone)
- Patella (front of knee)
👉 The joint space between bones represents cartilage (which doesn’t show directly on X-ray).
🔍 What doctors look for
🦴 Fractures
- Breaks or cracks in bones
📉 Joint space narrowing
- Can indicate Osteoarthritis
🪨 Bone spurs
- Extra bone growth around the joint
📏 Alignment
- Whether bones are properly positioned
💥 Dislocation
- Bones out of normal position
⚠️ What X-rays don’t show well
- Ligaments (ACL, PCL)
- Cartilage damage (only indirectly)
- Soft tissues
For those, doctors may use MRI instead.
🟢 When you need a knee X-ray
- After injury or fall
- Persistent knee pain
- Swelling or stiffness
- Difficulty walking
🧠 Bottom line
A knee X-ray is a quick, useful tool to check bone structure and joint health, but it doesn’t show soft tissue injuries.
If you want, I can show you a normal vs arthritis knee X-ray comparison or explain what your own knee pain might indicate based on symptoms.
