Frozen shoulder is one of the most frustrating conditions we treat. It often starts with no injury, it can be intensely painful, it takes a long time to resolve, and much of the advice people receive about it is either out of date or wrong. Plenty of people spend months on the wrong treatment because their shoulder was never correctly diagnosed in the first place.
This article explains what frozen shoulder actually is, who gets it, how it progresses, what helps at each stage and what does not.
What is frozen shoulder?
The medical name is adhesive capsulitis. The shoulder joint is surrounded by a sleeve of connective tissue called the capsule. In frozen shoulder, the capsule becomes inflamed, then thickens and contracts, so the joint gradually loses its ability to move. The result is a shoulder that is painful and stiff in every direction, including when someone else tries to move it for you.
That last point is the key to the diagnosis. Most shoulder problems limit how far you can lift your own arm because it hurts. Frozen shoulder limits how far the arm can move at all, even when the muscles are completely relaxed. The joint itself is restricted.
The cause is not fully understood. It is not caused by adhesions in the sense of scar tissue that can be broken up, and the joint is not literally frozen. What happens is a fibrotic and inflammatory process in the capsule that, for reasons no one has fully explained, runs its course over a long period and then resolves.
Who gets Frozen Shoulder?
Frozen shoulder affects around 2 to 5 per cent of people at some point. It is most common between the ages of 40 and 60, more common in women, and rarely seen under 40. If you are 30 with a stiff shoulder, it is probably something else.
Some groups are at much higher risk:
- People with diabetes. Frozen shoulder is several times more common in people with type 1 or type 2 diabetes, and it tends to be more severe and slower to resolve. Up to one in five people with diabetes will have it at some stage.
- People with thyroid disease.
- Anyone who has had a shoulder immobilised after an injury, fracture or surgery, or who has had a period of not using the arm, such as after a stroke or a mastectomy.
- People who have had it in the other shoulder. Around one in five go on to develop it on the other side, though it rarely returns in the same shoulder.
The three stages of Frozen Shoulder
Frozen shoulder usually follows a recognisable course, though the timing varies and the stages overlap.
Freezing
Pain is the dominant feature. It starts gradually, often as a dull ache around the outer shoulder and upper arm, and builds over weeks to months. Night pain is typical and can be severe, waking people repeatedly and making it impossible to lie on that side. Sudden movements, such as reaching back for a seatbelt, produce sharp, intense pain. Range of movement begins to reduce, but pain is what brings people in. This stage lasts roughly two to nine months.
Frozen
Pain settles to a more manageable level but stiffness dominates. Reaching overhead, behind the back to do up a bra or tuck in a shirt, and out to the side become very restricted. Night pain eases. Daily tasks like washing hair, reaching into a cupboard or putting on a jacket are awkward. This stage typically lasts four to twelve months.
Thawing
Movement gradually returns and pain continues to fade. Improvement is slow but steady, and most people regain good function. This can take anywhere from six months to two years.
The traditional estimate is that the whole process lasts one to three years. That is still a fair guide, and we would rather you plan for a long recovery and be pleasantly surprised than expect a quick fix.
What does Frozen Shoulder feel like?
Common features that point to frozen shoulder rather than something else:
- Gradual onset with no clear injury, or after a minor one that should have settled.
- Deep, aching pain around the shoulder and upper arm, often hard to pinpoint.
- Severe pain with sudden or end of range movements.
- Night pain, particularly in the early months.
- Progressive stiffness in all directions. Rotating the arm outward, as if to hitchhike, is usually the most restricted movement and often the first to go.
- Inability to reach behind the back or overhead.
- The same restriction when someone else moves the arm as when you move it yourself.
What else it could be
Frozen shoulder is often misdiagnosed in both directions. Stiff painful shoulders get called frozen when they are not, and true frozen shoulders get treated as rotator cuff problems for months.
Conditions that look similar include rotator cuff tendon pain or tears, which usually limit active movement but not passive movement; shoulder osteoarthritis, which produces a similar pattern of stiffness but shows on an X-ray; calcific tendinitis, which can cause sudden severe pain; and referred pain from the neck. Rarely, a locked posterior dislocation or a tumour can present as a stiff shoulder, which is one reason an X-ray is often ordered even when frozen shoulder is suspected.
A careful examination usually separates these. If the diagnosis is uncertain, an X-ray rules out arthritis and other bony causes. Ultrasound and MRI are not needed to diagnose frozen shoulder, although they are sometimes ordered to check for a rotator cuff tear alongside it.
Does Frozen Shoulder get better on its own?
Mostly, yes. Frozen shoulder is often described as self-limiting, and the great majority of people regain good function and are left with little or no pain. That is honest as far as it goes.
The fuller picture is that it takes a long time, and long term follow-up studies show a proportion of people are left with some mild residual stiffness, particularly in rotating the arm outward and reaching behind the back. Most do not find that limiting. People with diabetes tend to have a longer and less complete recovery.
Treatment does not appear to shorten the overall course dramatically, but it can significantly reduce pain in the early phase, protect function through the middle phase, and help you get back to normal activities sooner. That is worth having when the alternative is months of poor sleep.
What helps Frozen Shoulder in the painful phase
In the freezing stage, the priority is pain control and sleep. Stretching hard into a hot, irritable capsule makes things worse, and a great deal of frozen shoulder treatment fails because it is too aggressive too early.
- A corticosteroid injection into the joint. This has the best evidence of any treatment for the early painful stage. It reduces pain substantially for several weeks to a few months and can break the cycle of night pain. It works best when given early, ideally in the first few months, and is done by a doctor or radiologist, usually under ultrasound guidance. It does not shorten the whole process, but it makes the worst part more bearable.
- Anti-inflammatory medication or other pain relief, discussed with your GP or pharmacist, particularly to help with sleep.
- Gentle movement within the comfortable range. Pendulum exercises, assisted lifting of the arm with the other hand or a stick, and light movement in the shower all help keep what movement you have without provoking the joint.
- Positioning at night. Lying on the other side with the sore arm supported on a pillow in front of you, or on your back with a pillow under the arm, reduces night pain for many people.
- Heat before movement, and hands-on treatment to ease the surrounding muscle guarding.
What helps Frozen Shoulder in the stiff and thawing phases
Once pain is no longer the main issue, the emphasis shifts to restoring movement and strength.
- Progressive stretching and mobility work. This is where firmer stretching becomes useful and well tolerated. The aim is to work regularly into a stretch that produces a moderate pull, hold it, and repeat several times a day. The direction that is most restricted, usually outward rotation and overhead reach, gets the most attention.
- Joint mobilisation. Hands-on techniques that stretch the capsule in specific directions can improve range, particularly when combined with home exercise.
- Strengthening. Shoulders that have been painful and stiff for months lose strength in the rotator cuff and the muscles around the shoulder blade. Rebuilding this is part of getting back to normal function and sport.
- Hydrodilatation. This is an injection of a large volume of fluid, usually with steroid and local anaesthetic, done under imaging guidance to stretch the capsule from the inside. It can improve range and pain in the stiff phase, and it is a reasonable option if progress has stalled.
- Surgery. For the small number of people who remain severely restricted after a prolonged period of appropriate treatment, an arthroscopic capsular release or a manipulation under anaesthetic can be considered. Most people never need this.
What doesn’t help Frozen Shoulder
- Aggressive stretching or forceful manipulation during the painful phase.
- Complete rest and stopping all use of the arm, which lets the shoulder stiffen faster.
- Treating it as a rotator cuff problem with heavy strengthening while the joint is still hot.
- Repeat scans. Once the diagnosis is made, further imaging adds nothing.
- Waiting for it to “just go away” without doing anything. It will probably resolve eventually, but with more pain, worse sleep and more lost function along the way.
How long is recovery from Frozen Shoulder
Honestly, longer than you would like. Plan for around 12 to 18 months from onset to good function, with the worst of the pain over in the first three to six months if it is managed well, and expect it to be slow and uneven. People with diabetes should expect a longer course.
What treatment for Frozen Shoulder at VIBE looks like
The first job is to get the diagnosis right, which means a thorough history and an examination of both your active and passive shoulder movement, your neck and your rotator cuff. If it fits frozen shoulder, we will tell you what stage you are in and what that means for treatment. If an X-ray is needed to rule out arthritis or another cause, we will arrange it.
In the painful phase we will talk with you and your GP about an early steroid injection, give you a small set of gentle movements and positioning strategies to protect your sleep, and use hands-on treatment to ease the surrounding muscles. Once the pain settles, sessions shift to progressive stretching, joint mobilisation and a strengthening program, with home exercises that you do several times a day. Sessions are spaced out, because the work happens between them.
We monitor your range with measurements so you can see progress even when it feels slow, and if you plateau we will discuss hydrodilatation or a specialist opinion rather than keep doing the same thing.
Wrap-up
Frozen shoulder is a painful, stiff and slow condition of the joint capsule that mostly affects people between 40 and 60, especially those with diabetes. It moves through a painful freezing stage, a stiff frozen stage and a thawing stage over one to two years, and the large majority of people recover well. The right treatment depends on the stage: pain control and gentle movement early, with an injection if needed, then progressive stretching and strengthening once the pain settles.
If you have a shoulder that is stiff in every direction and waking you at night, book an assessment at VIBE Health & Performance in Homebush or Seven Hills. Getting the diagnosis right early is the biggest single thing that improves how this goes.