Frozen Shoulder: Stages, Timeline and Treatment

Of all the conditions I treat, frozen shoulder is the one that most often arrives with a look of genuine bewilderment. Patients tell me they did nothing. There was no fall, no lifting incident, no obvious moment where it went wrong. The shoulder simply started aching one week, and a few months later they cannot fasten a bra strap, reach a seatbelt or get a coat on without wincing.

Frozen shoulder, properly called adhesive capsulitis, is one of the few musculoskeletal conditions where the honest answer includes a long timeline. I would rather tell you that plainly than pretend otherwise. But the timeline is not the whole story, and what you do during it makes a real difference to how stiff and how sore you are at the end.

What frozen shoulder actually is

The shoulder joint sits inside a capsule, a sleeve of connective tissue that holds the joint together while allowing an extraordinary range of movement. In frozen shoulder that capsule becomes inflamed, then thickens and contracts. The joint physically loses room to move.

That last point matters, because it explains the single most distinctive feature of the condition: loss of movement in every direction, and just as importantly, loss of movement when someone else moves the arm for you. With a rotator cuff problem you can usually be moved further than you can move yourself. With a truly frozen shoulder you cannot. External rotation, turning the forearm outwards with the elbow tucked into your side, is nearly always the worst affected, and that is the finding I look for first.

It is more common between the ages of 40 and 60, more common in women, and considerably more common in people with diabetes or thyroid conditions. It can follow a period of immobilisation after surgery or a fracture. Often, though, there is no trigger at all.

The three stages and the honest timeline

Stage one: freezing

Pain dominates. It builds gradually over roughly two to nine months, is often worse at night, and lying on that side becomes impossible. Movement is starting to reduce but pain is the headline. This is the stage where people most commonly get misdiagnosed as having a cuff strain.

Stage two: frozen

Pain settles, often noticeably. Stiffness takes over and typically lasts four to twelve months. Paradoxically many patients feel this stage is an improvement, because they can finally sleep, even though the shoulder is at its most restricted.

Stage three: thawing

Movement gradually returns over roughly five months to two years. Recovery is real but slow.

Add those together and frozen shoulder commonly runs for one to three years. Most people regain good, functional movement; a minority are left with some permanent loss of end-range rotation, which in practice rarely limits daily life. I would rather set that expectation on day one than have you feel abandoned in month eight.

What frozen shoulder physiotherapy involves

Good frozen shoulder physiotherapy is stage-specific, and this is where a lot of well-meaning treatment goes wrong. Aggressive stretching in the painful freezing stage tends to inflame the capsule further and can genuinely prolong things. The same stretching in the frozen stage is exactly what is needed.

In the freezing stage the priority is pain control and preserving what movement you have. That means gentle pain-free range work, pendulum exercises, positioning advice for sleep, and heat. I will also talk through pain relief options with you and, where symptoms are severe, discuss whether a corticosteroid injection is worth raising with your GP. Evidence supports injection in the early painful phase for short and medium-term pain relief, and it often creates the window in which rehab becomes possible.

In the frozen stage we shift to sustained stretching at end range, joint mobilisation, and progressive loading. Long, low-intensity holds work better than short aggressive pulls. I also start strengthening the rotator cuff and the muscles around the shoulder blade, because a shoulder that has been guarded for a year is invariably weak.

In the thawing stage it becomes ordinary rehabilitation: restore full range, rebuild strength, return to the activities you have been avoiding, whether that is swimming at your local pool or reaching the top shelf without planning ahead.

Hands-on mobilisation, exercise therapy and clear education are the core. Around Liverpool and Merseyside I see a lot of people who were told simply to rest it, which is close to the worst available option for a capsule that contracts when unused.

Things worth knowing

Stop on sharp pain. A stretch should feel like a strong pull that eases within seconds of releasing. Pain that lingers for hours afterwards means you went too hard.

Consistency beats intensity. Four short sessions a day of five minutes will outperform one long punishing session, every time.

Diabetes changes the picture. If you are diabetic, frozen shoulder tends to be more stubborn and blood sugar control genuinely affects the course. It is worth reviewing with your GP.

Do not accept that nothing can be done. Surgery, in the form of manipulation under anaesthetic or arthroscopic capsular release, exists for the small number who plateau despite good conservative care. It is not a first-line option, but it is a real one.

When to see a doctor

Get medical review rather than physiotherapy first if you have shoulder stiffness alongside fever or a hot, swollen joint; if the shoulder followed significant trauma and you cannot lift the arm at all; if you have unexplained weight loss or a history of cancer; or if you have new pins and needles or weakness spreading down the arm.

Living with it in the meantime

Practical adaptations help more than people expect. Sleep with a pillow supporting the affected arm across your chest. Dress the painful arm first and undress it last. Use your good arm for the seatbelt. Keep the everyday things you need at waist height. And keep using the arm within comfort, because a shoulder you protect completely will stiffen faster than one you use sensibly.

If your shoulder has been aching for weeks and is quietly losing range, get it looked at early. Distinguishing frozen shoulder from a rotator cuff problem changes the entire plan, and the earlier we start the better the ceiling. You can read more about the assessment I use for shoulder injury and about musculoskeletal physiotherapy generally.

I offer home visits across Liverpool and Merseyside and online video consultations UK-wide, evenings Monday to Friday, plus Saturday and Sunday daytimes, with no GP referral needed. Book at /portal/book or call me on +44 7443 357020.