Frozen shoulder, or adhesive capsulitis, is one of the more frustrating orthopaedic conditions because it takes a long time, follows its own course, and responds only partially to treatment.
Understanding the phases makes it considerably easier to bear, and knowing what helps in each phase prevents wasted effort and unnecessary pain.
What Actually Happens
The shoulder joint is surrounded by a capsule of connective tissue. In frozen shoulder that capsule becomes inflamed, thickens and contracts, physically restricting how far the joint can move.
This is a mechanical restriction, not muscle tightness or pain inhibition. That distinction matters, because it explains why forcing movement does not help and why the restriction affects passive movement too. Someone else moving your arm encounters the same limit.
The hallmark is loss of external rotation, turning the arm outward, which is restricted early and severely.
The Three Phases
The condition follows a predictable pattern, and knowing which phase you are in determines what treatment makes sense.
- Freezing, roughly 2 to 9 months: increasing pain, worse at night, with movement progressively reducing. This is the most painful phase
- Frozen, roughly 4 to 12 months: pain gradually improves but stiffness is at its worst. Daily tasks such as dressing, reaching a back pocket and fastening a bra become difficult
- Thawing, roughly 6 to 24 months: movement gradually returns, often not quite to the original range
The total course is commonly one to three years. Telling patients it will resolve in a few weeks sets up disappointment and leads them to abandon treatment.
The Diabetes Connection
Frozen shoulder is considerably more common in people with diabetes, affecting a substantially higher proportion than the general population. It also tends to be more severe, longer lasting and more likely to affect both shoulders in turn.
The mechanism relates to glycation of collagen, where sustained high glucose alters connective tissue proteins and makes them stiffer.
If you develop frozen shoulder and have not been tested for diabetes, get checked. It is not uncommon for this to be the presentation that leads to a diabetes diagnosis. Our diabetology department sees patients referred for exactly this reason, and better glucose control appears to help.
Other Associations
Frozen shoulder is often idiopathic, meaning no cause is identified, but several associations exist.
- Thyroid disease, both under and overactive
- A period of immobilisation, such as after a fracture or surgery
- Previous shoulder injury or rotator cuff problems
- Cardiac surgery or stroke
- Age between forty and sixty, and more common in women
- Parkinson disease
Immobilisation is worth noting, because it is preventable. Keeping a shoulder moving gently after any arm injury reduces the risk considerably.
Treatment in the Painful Phase
During the freezing phase, the priority is pain control, not stretching. Aggressive physiotherapy at this stage increases inflammation and can worsen the condition.
- Anti inflammatory painkillers taken regularly for a period
- Gentle range of movement exercises within a pain free range, not beyond it
- Heat before exercises
- A steroid injection into the joint, which has good evidence for reducing pain and shortening this phase when given early
- Sleeping with a pillow supporting the arm, since night pain is often the worst symptom
Steroid injection is most effective in the first few months. Later on, when stiffness dominates and pain has settled, it offers considerably less.
Treatment in the Stiff Phase
Once pain settles, stretching becomes the priority and the approach reverses.
- Sustained stretching held for thirty seconds or more, several times daily
- Warmth before stretching to improve tissue extensibility
- Focus specifically on external rotation and reaching behind the back
- Supervised physiotherapy, at least initially, to ensure technique
- Consistency, since occasional intense sessions achieve less than daily moderate ones
Some discomfort during stretching is acceptable at this stage. Severe pain lasting hours afterwards means you are pushing too hard. Our physiotherapy department guides the transition between phases.
When Procedures Are Considered
Most cases resolve without intervention. Procedures are reserved for stiffness persisting beyond six to twelve months despite proper treatment, particularly where function is severely limited.
- Hydrodilatation: injecting fluid under pressure to stretch the capsule, done under imaging guidance
- Manipulation under anaesthesia: the capsule is stretched while you are asleep
- Arthroscopic capsular release: keyhole surgery dividing the tight capsule, used for resistant cases
Intensive physiotherapy immediately afterwards is essential for any of these, since the shoulder can stiffen again within days. Shoulder arthroscopy is effective but only when combined with committed rehabilitation.
Living With It Meanwhile
Practical adaptations reduce daily frustration during the long middle phase.
- Front fastening clothing, and dressing the affected arm first
- Moving frequently used items to waist height
- A long handled sponge for washing
- Sleeping on the unaffected side with a pillow supporting the affected arm
- Using the other arm for reaching, without abandoning the affected one entirely
- Continuing gentle daily movement, which is the one thing that consistently matters
Recovery is not linear. Good weeks and bad weeks are normal and do not mean treatment has failed.
Frozen shoulder almost always resolves, but on a timescale of years rather than weeks. Control pain and avoid aggressive stretching early, then stretch consistently once pain settles. If you have not been checked for diabetes and thyroid function, do that.
Our orthopaedics department at T. Nagar assesses shoulder pain and provides injections and physiotherapy.
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