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Frozen Shoulder, Menopause and What the Latest Evidence Actually Says

Frozen shoulder (adhesive capsulitis) is a condition where the capsule around the shoulder joint becomes inflamed, then thickens and tightens, so the joint loses movement in every direction. It typically runs through a painful phase, a stiff phase and a slow recovery, and it most often affects women aged 40 to 60.

If your shoulder has been aching for months, waking you at night, and now you can't reach behind your back or up to a shelf, this is probably the pattern you're dealing with. Here is what the current research says about why it happens, why menopause matters, and what the treatment options actually deliver.

Medically reviewed Damien Benson APHRA No: CHI0001403573

What actually happens inside a frozen shoulder?

The capsule that normally allows the joint to glide becomes inflamed and then scars, so the shoulder cannot move through its full range, even when someone else tries to move it for you.

That last point is what separates frozen shoulder from a rotator cuff problem or ordinary stiffness. The restriction is in the capsule itself, so both active and passive movement are limited, particularly the outward rotation of the arm.

The condition traditionally progresses through three stages. The freezing (painful) phase develops over the first three to nine months, with diffuse pain that is often worse at night. The frozen (stiff) phase follows, with pain settling but the shoulder feeling locked, lasting roughly four to nine months. The thawing phase is the slow return of movement, which can take anywhere from five months to two years.

One point worth being honest about: the old idea that frozen shoulder always resolves completely on its own has been challenged. A 2017 review found that without treatment, many people regain only some, not all, of their range of motion even after one to four years, and a proportion are left with lasting stiffness or pain (Wong et al., 2017). "Wait it out" is a real option, but it is not a guarantee of full recovery, which is why most people seek active treatment.

Who gets frozen shoulder, and why?

The strongest known risk factor is diabetes, followed by thyroid disease, being female, and any period where the shoulder has been kept still.

The link between diabetes and frozen shoulder is causal, not incidental. A 2021 genome-wide study identified genetic loci associated with frozen shoulder and identified diabetes as a causal risk factor, not merely a bystander (Green et al., 2021). A separate 2023 systematic review confirmed that people with diabetes have a substantially higher risk of developing the condition (Kingston et al., 2023). Both an underactive and an overactive thyroid also increase the risk.

Then there is immobilisation. A shoulder that has been rested after a fracture, surgery, a stroke, or even a long stint in a sling can stiffen into a secondary frozen shoulder, which is one reason we advocate early, guided movement after most injuries rather than prolonged rest.

Why does menopause make frozen shoulder more likely?

Oestrogen helps keep connective tissue supple and dampens inflammation, so when levels fall during perimenopause and menopause, the shoulder capsule loses some of that protection.

This is where the latest evidence sits. Around three-quarters of frozen shoulder cases occur in women, and the peak age coincides with the menopausal transition. In 2024, researchers grouped these effects under a single term, the "musculoskeletal syndrome of menopause", after finding that more than 70% of women going through menopause report musculoskeletal symptoms (Wright et al., 2024). Oestrogen has measurable anti-inflammatory and anti-fibrotic effects and supports collagen integrity, which is exactly the tissue behaviour that goes awry in a frozen shoulder.

The hormone-therapy question remains open, and caution is warranted. A Duke Health study of nearly 2,000 postmenopausal women aged 45 to 60 found that 3.95% of those on hormone replacement therapy were diagnosed with frozen shoulder, compared with 7.65% of those not on it (Wittstein et al., Duke Health). The difference did not reach statistical significance, so this is a signal rather than proof, and a randomised trial is now underway to test it properly. If you are already weighing up HRT for other menopausal symptoms, the possible shoulder benefit is a reasonable point to raise with your GP, but it is not yet a reason on its own to start it.

Can focused shockwave therapy help a frozen shoulder?

Shockwave delivers acoustic pulses into the tissue, stimulating local blood flow and appearing to modulate pain and fibrosis in the capsule. Several trials show it improves pain, movement and function in the short term.

A review of the literature identified seven randomised controlled trials in which shockwave produced significant gains in function, pain and range of motion compared with control. In a randomised trial of 40 patients, shockwave produced faster and greater functional improvement than oral steroids. A 2025 randomised trial found that radial shockwave combined with structured physiotherapy improved pain more than sham treatment (Alrashdi et al., Saudi Medical Journal, 2025). Two honest caveats. Most of this evidence uses radial shockwave, and most of it measures short-term outcomes, so it is best understood as a promising adjunct rather than a stand-alone cure. Its real value is that it is non-invasive, its reported side effects are transient, and it can reduce pain enough to let you do the guided movement that actually restores the range. Most clinics that offer physiotherapy stop there. We've also invested in Focused Shockwave so we can target the capsule directly and pair it with hands-on mobilisation and a loading programme in the same plan.

What injections are available for frozen shoulder, and do they work?

The two mainstays are an intra-articular corticosteroid injection and hydrodilatation, and both are most useful in the earlier, more painful stage of the condition.

A corticosteroid injection delivers anti-inflammatory medication directly into the joint. Used during the freezing phase, it can significantly reduce pain and improve range of motion, with benefits typically measurable for up to 12 weeks. It does not reverse the underlying scarring, but it can break the pain cycle enough to make rehabilitation tolerable.

Hydrodilatation (also called hydrodistension) goes a step further: fluid, usually containing a corticosteroid, is injected under gentle pressure to stretch and expand the tightened capsule from the inside. A 2023 systematic review and meta-analysis found that hydrodilatation produced more marked short-term improvements in shoulder disability and outward rotation than a corticosteroid injection alone, though the longer-term advantage is less certain (Catapano et al., British Medical Bulletin, 2023). Earlier work reached the same conclusion, rating hydrodilatation with corticosteroid as one of the most effective conservative options (Ladermann et al., 2021).

Both are usually arranged through a GP, sports physician or radiologist, often under ultrasound guidance. They work best when they are the start of a rehabilitation plan, not the whole of it.

What are the risks of these injections?

They are generally safe, but corticosteroid injections carry a small risk of a short-lived pain flare, skin thinning or lightening at the injection site, infection, and, rarely, tendon damage.

The one that matters most for our patients is blood glucose. Because a corticosteroid is partly absorbed into the bloodstream, it can raise blood sugar for roughly a week after the injection, which is significant given how many people with frozen shoulder also have diabetes (AJR, 2024). If you are diabetic, it is worth planning around with whoever gives the injection and monitoring at home afterwards. Hydrodilatation carries similar risks, plus temporary discomfort as the capsule is stretched. None of these are common, but they are real, and they are the reason an injection is considered a step rather than a default one.

Where Spectrum Healthcare fits in?

Frozen shoulder rarely responds to a single intervention. The pattern we see work is to match treatment to the stage: settle pain first, restore movement second, and rebuild strength last. That might mean guided physiotherapy and hands-on mobilisation, focused shockwave therapy to reduce pain, a structured loading programme delivered by our exercise physiologists, and, where warranted, a conversation with your GP about an injection. If a frozen shoulder has stalled your recovery, book an assessment. We will map out which stage you are in and what will actually move it forward.

Frequently Asked Questions (FAQ)

How long does frozen shoulder last?

Left alone, it commonly runs for 18 months to three years through its painful, stiff and thawing phases, and a proportion of people are left with some lasting stiffness. Active treatment aims to shorten that and reduce how much movement you lose along the way.

Is frozen shoulder linked to menopause?

Yes. Around three-quarters of cases occur in women. The peak age overlaps the menopausal transition, and falling oestrogen reduces the anti-inflammatory and connective-tissue protection the shoulder capsule relies on. Early evidence suggests hormone replacement therapy may lower the risk, though this is not yet proven.

Does shockwave therapy work for frozen shoulder?

Several randomised trials show that shockwave improves pain, movement and function in the short term. It is non-invasive and has only transient side effects. It works best when combined with guided movement rather than on its own.

Which is better for frozen shoulder, a cortisone injection or hydrodilatation?

Both help in the early painful stage. Hydrodilatation, which stretches the capsule with fluid, shows greater short-term improvement in stiffness and rotation than a cortisone injection alone, according to recent reviews, but the longer-term difference is smaller.

Can frozen shoulder be treated without surgery?

For most people, yes. The large majority are managed with physiotherapy, guided exercise, shockwave therapy and injections. Surgery is reserved for the minority who do not respond to a full course of non-surgical treatment.