Knee pain is one of the most common reasons patients seek help at Alton Pain Clinic, and for many people, a cortisone injection can provide fast, targeted and long-lasting relief. When delivered with precision using ultrasound guidance, cortisone injections become even safer, more accurate and more effective.
What Is a Cortisone Injection?
A cortisone injection delivers an anti-inflammatory steroid directly into the painful part of the knee, usually the joint or surrounding soft tissues.
It helps reduce:
- Pain
- Swelling
- Stiffness
- Inflammation caused by arthritis, injury or overuse
Unlike painkillers, a cortisone injection targets the exact source of the problem.
Conditions That Benefit from a Cortisone Injection
We commonly use cortisone injections for:
- Osteoarthritis of the knee
- Meniscal irritation
- Knee bursitis
- Tendon inflammation
- Ligament strain
- Synovitis (joint lining inflammation)
- Post-injury swelling and stiffness
If knee pain is affecting your mobility, sleep or daily activities, a cortisone injection might be an excellent option.
How the Procedure Works at Alton Pain Clinic
1. Consultation & Assessment
Your clinician takes a detailed history, examines your knee and reviews any scans (if available). If appropriate, they may recommend an ultrasound-guided injection.
2. Ultrasound Scan
A gentle scan identifies the exact inflamed structure and confirms the safest needle pathway.
3. Injection Under Ultrasound Guidance
A mixture of:
- Corticosteroid (anti-inflammatory)
- Local anaesthetic (for immediate pain relief)
is injected directly into the target area.
4. Immediate Aftercare
You can walk immediately after the procedure. Most patients feel improvement within 48–72 hours, though it may take up to a week.
How Long Does a Cortisone Injection Last?
Pain relief varies depending on the condition, but most patients experience:
- Weeks to months of reduced pain
- Improved mobility
- Better ability to exercise and complete physiotherapy
Some patients only need one injection, while others benefit from occasional repeat treatments.
Aftercare & Recovery
To ensure the best outcome, we recommend:
- Resting the knee for 24–48 hours
- Avoiding heavy exercise for a few days
Book Your Knee Injection at Alton Pain Clinic
If knee pain is stopping you from walking comfortably, exercising or enjoying daily life, an ultrasound-guided cortisone injection may provide fast and reliable relief.
Frequently Asked Questions
How long does it take for a cortisone injection to work?
Most patients feel improvement within 48–72 hours, though it can take up to a week for full relief.
How long will the pain relief last?
Relief can last from a few weeks to several months depending on the condition and individual response.
Is the injection painful?
With local anaesthetic and ultrasound guidance, most patients feel only a small pinch or pressure.
Are there any side effects?
Temporary soreness, swelling, warmth, or slight facial flushing are common. Diabetes patients may experience a short-term rise in blood sugar.
How often can I have cortisone injections?
Typically, injections are spaced a few months apart to avoid overuse. Your clinician will advise based on your condition.