Subchondral Fractures of the Knee: What They Mean and How We Treat Them at MyKneeDoc
Expert insights from Consultant Knee Surgeon Gareth Stables, MyKneeDoc.co.uk
If you’ve recently had an MRI scan and been told you have a subchondral fracture of the knee, you’re not alone—and you don’t need to panic. At MyKneeDoc in Cheshire, we see this MRI finding quite frequently, especially in people experiencing deep, persistent knee pain that doesn’t show up on X-rays.
A subchondral fracture may sound dramatic, but in most cases it’s a stable, stress-related injury that heals well with the right management. In this blog, we’ll break down what it is, why it happens, and how we help patients recover—using the same clear, patient-friendly approach we offer in clinic.
What Exactly Is a Subchondral Fracture?
The knee joint is covered with smooth cartilage. Just underneath that cartilage sits the subchondral bone—the supporting layer that absorbs force every time you walk, climb stairs, or kneel.
A subchondral fracture is a small crack or stress injury in this supporting bone.
Unlike a traditional “broken bone,” this isn’t something that shifts, separates, or requires a cast. It’s more like a bone bruise under pressure—and it usually improves with the right care.
Why Do Subchondral Fractures Happen?
At MyKneeDoc, we typically see subchondral fractures develop from one of the following:
1. Increasing activity too quickly
A sudden rise in walking distance, gym work, or hill-climbing can overload the bone.
2. A minor twist or strain
Small injuries that may not seem important at the time can place unexpected stress on the load-bearing surfaces of the knee.
3. Changes in bone quality
As we age—or if there’s early osteoarthritis—the bone becomes slightly less resilient, making it more prone to stress reactions.
4. Repetitive pressure
Long periods of standing, kneeling, squatting, or impact exercise can gradually overload the joint.
None of these causes mean long-term damage. They simply explain why this part of the bone becomes irritated or cracked under pressure.
Common Symptoms We See in Clinic
Patients often describe:
- Deep, aching pain inside the knee
- Discomfort that worsens with weight-bearing
- Pain when climbing stairs or walking downhill
- Swelling or stiffness
- A feeling that the knee “just doesn’t want to be loaded”
These symptoms can be frustrating, but they’re also very typical. An MRI helps detect the fracture early so we can guide treatment and protect the joint.
How We Treat Subchondral Fractures at MyKneeDoc
Every patient is different, but treatment usually follows several key principles.
1. Reducing load on the knee
We often recommend:
- Using a stick or crutch briefly
- Shortening walks
- Avoiding hills and stairs for a few weeks
- Cutting back high-impact activities
Giving the bone a break is often the single most effective treatment.
2. Guided physiotherapy
Targeted strengthening around the hip and knee helps redistribute load away from the injured area.
This is key for long-term resilience and confidence.
3. Simple pain relief (if needed)
Medication can help short-term, though many patients manage without.
4. Time—and patience
Most subchondral fractures improve over 6–12 weeks, sometimes a little longer if symptoms were severe.
5. Additional treatments when appropriate
Some cases benefit from:
- Knee bracing to limit painful movement
- Injections to settle surrounding inflammation
- Activity planning to protect the joint during recovery
At MyKneeDoc, we tailor these options to your symptoms, lifestyle, and goals.
What About Long-Term Outcomes?
The outlook is very reassuring.
Most patients return to full activity once the bone heals.
If early osteoarthritis is present, we’ll also guide you on:
- Joint-friendly exercise
- Strengthening strategies
- Weight management
- Activity pacing
These small changes can significantly reduce the chance of recurrence.
Key Takeaways
- A subchondral fracture is a small, stable stress injury, not a major break.
- It heals well with reduced loading and physiotherapy.
- MRI findings may look dramatic, but symptoms usually settle quicker than the scan changes.
- With the right care, most people return to normal daily activities and exercise without long-term problems.
Need Help With Persistent Knee Pain?
If you're struggling with knee discomfort or you’ve recently been diagnosed with a subchondral fracture, our team—led by Consultant Knee Surgeon Gareth Stables—can guide you through a clear, personalised recovery plan.
Learn more or book an appointment at: MyKneeDoc.co.uk