If you've noticed your shoulder getting stiffer by the week, reaching for a seatbelt has become a small ordeal, or sleeping on that side is now impossible, you may be dealing with frozen shoulder. Medically known as adhesive capsulitis, frozen shoulder is a condition where the capsule surrounding the shoulder joint thickens and tightens, gradually limiting how far the joint can move.
It's more common than most people realize, and it can take months or even years to resolve on its own. The good news is that physiotherapy can meaningfully speed up recovery and reduce pain along the way. In this post, we'll walk through what causes frozen shoulder, the symptoms and stages to watch for, and how a hands on physiotherapy approach can help you get your shoulder moving again.
What Is Frozen Shoulder?
Frozen shoulder develops when the connective tissue capsule around the shoulder joint becomes inflamed and thickened. Bands of scar tissue, called adhesions, can form inside the joint, which is what makes movement feel restricted and often painful. Unlike a muscle strain that improves in a few weeks, frozen shoulder tends to progress slowly and can affect nearly every part of daily life, from getting dressed to driving.
It typically affects one shoulder at a time, though some people go on to develop it in the other shoulder later. Women between the ages of 40 and 60 are diagnosed more often than men, and there's a well established link between frozen shoulder and hormonal changes during perimenopause and menopause.
What Causes Frozen Shoulder
There isn't always a clear trigger, which is part of what makes this condition frustrating for patients. That said, a few factors show up again and again:
- Prolonged immobility. Keeping a shoulder still for an extended period, often after surgery, a fracture, or a rotator cuff injury, is one of the most common causes. When a joint isn't moved through its normal range, the capsule can tighten.
- Diabetes. People with diabetes are significantly more likely to develop frozen shoulder, and their cases can be slower to resolve.
- Thyroid conditions. Both hypothyroidism and hyperthyroidism have been linked to a higher risk of adhesive capsulitis.
- Hormonal shifts. Many women notice frozen shoulder symptoms emerging during perimenopause, which researchers believe is tied to changing estrogen levels and their effect on connective tissue.
- Age and prior injury. Frozen shoulder is rare before age 40, and a history of shoulder injury or surgery raises the likelihood of it developing later.
In many cases, frozen shoulder appears with no obvious cause at all. If you're dealing with unexplained shoulder stiffness, it's worth getting it assessed early rather than waiting to see if it resolves on its own.
Symptoms and the Stages of Frozen Shoulder
Frozen shoulder symptoms generally move through three recognizable stages, and understanding which stage you're in helps guide the right treatment approach.
Freezing stage. This is usually the most painful phase. Any movement of the shoulder can trigger a sharp or aching pain, and range of motion starts to decline. This stage can last anywhere from six weeks to nine months.
Frozen stage. Pain often decreases somewhat, but stiffness becomes the main issue. Everyday tasks like reaching overhead, tucking in a shirt, or brushing your hair become genuinely difficult. This stage tends to last four to six months.
Thawing stage. Range of motion gradually returns, sometimes slowly and unevenly. This final stage can take anywhere from six months to two years.
Without any intervention, frozen shoulder can take up to three years to fully resolve, and some people are left with a degree of permanent stiffness. That's a long time to live with limited mobility and disrupted sleep, which is exactly why early physiotherapy involvement matters.
How Physiotherapy Can Help
Physiotherapy won't make frozen shoulder disappear overnight, but it plays a genuinely important role at every stage of the condition. A skilled physiotherapist tailors the approach to whichever stage you're in, since the right treatment during the painful freezing stage looks very different from the right treatment during the frozen or thawing stage.
Pain management in the early stage. During the freezing stage, gentle, low load techniques and manual therapy help calm irritated tissue without provoking more pain. Modalities and activity modification also play a role here.
Restoring range of motion. As the shoulder moves into the frozen stage, physiotherapists introduce targeted mobilizations and stretching to gradually work on the capsule itself, along with a structured program of frozen shoulder exercises you can continue at home. This is where hands on manual therapy really matters. A physiotherapist can apply precise, graded pressure to the joint capsule in ways that self-directed stretching simply can't replicate.
Strengthening through recovery. Once mobility starts returning in the thawing stage, the focus shifts to rebuilding strength in the surrounding muscles, which often become weak after months of limited use. This step is what helps prevent re-injury and gets you back to normal function, not just normal range of motion.
At Thrive Therapy Clinic in South Edmonton, our physiotherapy appointments run 45 to 60 minutes, one on one, in a private treatment room. That extended, unhurried time matters enormously for a condition like frozen shoulder, where careful manual assessment and hands on mobilization make the difference between slow progress and steady improvement. Jen Kiesman, one of our co-owners and a physiotherapist with over 20 years of clinical experience, along with our broader physiotherapy team, regularly works with patients through every stage of frozen shoulder, building a plan around where each person actually is in the process rather than applying a one size fits all protocol.
When to See a Physiotherapist
If shoulder stiffness has been creeping up over several weeks, or if pain is starting to interrupt your sleep or daily routine, it's worth getting assessed sooner rather than later. Early physiotherapy involvement during the freezing stage can help manage pain and may shorten the overall timeline of the condition.
Frozen shoulder is uncomfortable and often frustrating, but it is treatable. With a consistent, hands on physiotherapy plan, most people see steady improvement in both pain and mobility. If you're dealing with a stiff, painful shoulder and want a thorough assessment, reach out to Thrive Therapy Clinic to book a physiotherapy appointment and start working toward getting your full range of motion back.
