A cortisone injection for frozen shoulder may provide short-term pain relief, often lasting several weeks and sometimes up to a few months. The duration can vary depending on the stage of adhesive capsulitis, the individual, and how the injection is delivered. Pain relief, if it occurs, may begin within a few days and peak within 1–2 weeks.
What Is a Cortisone Injection for Frozen Shoulder?
A shoulder steroid injection, commonly referred to as a cortisone injection, is designed to reduce inflammation inside the shoulder joint. In people with adhesive capsulitis, the joint capsule becomes inflamed and thickened, leading to pain and swelling, restricted movement, and increasing shoulder pain.
At Alton Pain Clinic, we use ultrasound-guided injections, which ensure the medication is delivered precisely to the correct injection site within the joint. This accuracy improves outcomes and reduces the risk of side effects.
How Long Does Pain Relief Last After a Cortisone Shot?
For most patients with frozen shoulder, a cortisone injection provides relief that lasts:
- From a couple of days to two weeks for pain to start improving
- 4 to 12 weeks of noticeable pain relief
- Occasionally up to 6 months, particularly in the early stages of frozen shoulder
The effects are generally short term, but very valuable. Cortisone helps relieve pain, reduce inflammation, and make movement and physiotherapy more tolerable.
Does the Stage of Frozen Shoulder Matter?
Yes – the stage of adhesive capsulitis plays a major role in how long a shoulder steroid injection lasts.
Early (Freezing) Stage
In the early stages, inflammation is dominant. A cortisone injection at this point often provides the best results, significantly reducing pain and stiffness and improving shoulder mobility.
Frozen Stage
During this stage, pain may be less intense but stiffness is severe. Injections including cortisone can still help with joint pain, but improvements may be more modest.
Thawing Stage
At this stage, inflammation has reduced. A cortisone shot may offer limited benefit, as natural recovery is already underway.
Why Ultrasound-Guided Injections Matter
Blind injections can miss the joint or deposit medication into surrounding tissues such as the rotator cuff. At Alton Pain Clinic, all shoulder steroid injections are performed using ultrasound guidance.
Benefits include:
- Accurate placement at the correct injection site
- Better pain relief outcomes
- Reduced risk of complications
- Improved treatment for complex shoulder problems
This precision is particularly important in frozen shoulder, where joint space is restricted.
How Quickly Does a Cortisone Shot Work?
Patients often notice:
- Reduced pain within a couple of days
- Maximum pain relief within 7–14 days
Some temporary soreness at the injection site is normal. This usually settles within 24–48 hours.
Who Is a Good Candidate for a Cortisone Injection?
You may benefit if you have:
- Persistent shoulder pain lasting more than a few weeks
- Significant pain and stiffness affecting daily activities
- Poor sleep due to shoulder discomfort
- Limited response to painkillers
Patients with complex shoulder problems should be assessed to rule out alternative causes such as rotator cuff tears.
Cortisone Injection for Frozen Shoulder at Alton Pain Clinic
At Alton Pain Clinic, we specialise in ultrasound-guided shoulder steroid injections as part of comprehensive pain management. Our approach focuses on accurate diagnosis, precise treatment, and long-term recovery.
If you are struggling with frozen shoulder, joint pain, or ongoing shoulder problems, an ultrasound-guided cortisone injection may offer meaningful pain relief and improved function.
Which Is Better: Cortisone or Hydrodilatation?
There is no single treatment that is best for every person with frozen shoulder.
A steroid injection may be considered when pain and inflammation are prominent.
Hydrodilatation may be considered when stiffness and restricted movement are significant and a procedure to expand the joint capsule is appropriate.
The choice should be based on clinical assessment and individual circumstances.
Key Takeaway
A cortisone shot for frozen shoulder typically lasts weeks to months, with the best results seen in the early stages of adhesive capsulitis. When delivered accurately using ultrasound guidance, it can significantly reduce shoulder pain, ease pain and stiffness, and support recovery.
For expert assessment and ultrasound-guided injections, contact Alton Pain Clinic today.
Explore Other Treatment Options
Hyaluronic Acid Injections
Hyaluronic acid (HA) injections can help improve joint lubrication by replenishing the natural hyaluronic acid found within the joint. This may reduce friction between joint surfaces, support smoother movement and help improve comfort during everyday activities.
PRP Injections
Platelet-rich plasma (PRP) injections use a concentrated preparation of your own platelets to support the body’s natural healing processes within the affected joint. They may help support tissue repair, reduce discomfort and promote improved joint function and mobility.
Frequently Asked Questions
How long does a cortisone injection last for frozen shoulder?
It may provide short-term pain relief, often lasting several weeks and sometimes a few months.
When does pain relief start?
Some people notice changes within a couple of days, while others may take 1–2 weeks.
Does a cortisone injection cure frozen shoulder?
No. It does not cure frozen shoulder but may help manage symptoms.
Is it more helpful in early frozen shoulder?
It is often considered more useful in the early stages of adhesive capsulitis.
Why use ultrasound guidance?
Ultrasound helps place the injection accurately into the shoulder joint.