Frozen shoulder — medically termed adhesive capsulitis — is one of the most painful and debilitating shoulder conditions. It is also one of the most frequently misunderstood: many patients are told it will “just get better on its own” and left without treatment for months or even years. The reality is that frozen shoulder can be treated effectively with physiotherapy, and early intervention significantly shortens recovery time.
What Is Frozen Shoulder?
Frozen shoulder is a condition in which the joint capsule of the shoulder becomes inflamed, thickened, and contracted — dramatically restricting shoulder movement in all directions. Unlike rotator cuff tears or impingement, frozen shoulder restricts passive range of motion (movement by an external force) as well as active range. This loss of both active and passive movement is the hallmark finding that distinguishes frozen shoulder from other shoulder conditions.
The condition affects approximately 2–5% of the general population and is most common between ages 40 and 60. It is significantly more prevalent in people with diabetes (affecting up to 20% of diabetic patients) and thyroid conditions. It can also occur following shoulder injury or surgery (secondary frozen shoulder).
The Three Stages of Frozen Shoulder
Stage 1: Freezing (Pain-Dominant)
The freezing stage typically lasts 3–9 months. The primary feature is severe, constant aching pain, often worse at night and with any shoulder movement. Range of motion begins to decrease as the capsule contracts. This is the most painful stage — patients often describe it as one of the worst pain experiences of their lives, frequently disrupting sleep.
Stage 2: Frozen (Stiffness-Dominant)
The frozen stage typically lasts 4–12 months. Pain begins to reduce (though remains present at end-range), and severe restriction of movement is the dominant feature. External rotation is almost always the most restricted direction — often reduced to less than 0 degrees (cannot rotate the arm outward at all). Internal rotation and abduction are also significantly restricted. Daily activities — dressing, reaching overhead, driving — become severely impacted.
Stage 3: Thawing (Resolution)
The thawing stage typically lasts 5–24 months. Range of motion gradually returns, pain continues to decrease. Without treatment, the natural history of frozen shoulder is resolution over 18 months to 3 years — but many patients do not achieve full resolution without physiotherapy, retaining a permanent deficit of external rotation.
Frozen Shoulder Treatment: What Actually Works
Physiotherapy — The Core Treatment
Physiotherapy is the primary treatment for frozen shoulder at all stages. The approach differs by stage:
In the freezing stage, the focus is on pain management, maintaining movement within pain tolerance, and education. High-load stretching in the freezing stage can exacerbate the inflammatory process and is contraindicated. Gentle glenohumeral mobilisation, pendulum exercises, and pain education are the mainstays.
In the frozen and thawing stages, progressive capsular stretching, end-range glenohumeral mobilisation, and strengthening of the surrounding musculature become appropriate and effective. This is where physiotherapy produces the greatest movement gains.
Corticosteroid Injection
A corticosteroid (cortisone) injection into the glenohumeral joint is highly effective for pain relief in the freezing stage — it reduces capsular inflammation and can shorten the pain-dominant phase by several months. The evidence most strongly supports injection early in the freezing stage. Your physiotherapist can refer you to a GP or sports physician for this procedure if indicated.
Hydrodilatation (Distension Arthrogram)
Hydrodilatation involves injecting a large volume of saline, corticosteroid, and local anaesthetic into the glenohumeral joint under imaging guidance, distending and partially rupturing the contracted capsule. It produces faster range-of-motion gains than injection alone and is particularly useful in the frozen stage. It is performed by a radiologist and requires a referral.
Manipulation Under Anaesthetic (MUA)
For cases that fail to respond to physiotherapy and injection, manipulation under anaesthetic — in which the shoulder is forcibly mobilised while the patient is sedated — can break up adhesions and rapidly restore movement. It is generally considered a last resort due to the risks involved.
What You Can Do at Home
Consistent daily stretching is critical for recovery in the frozen and thawing stages. The key stretches include:
- External rotation stretch: Elbow at 90 degrees, rotate forearm outward using a stick or towel — held for 30 seconds, repeated 3 times, performed 2–3 times daily
- Cross-body stretch: Pull the affected arm across the body at shoulder height
- Pendulum exercises: Lean forward, let the arm hang, and make small circles — this tractors the joint and reduces pain
These should be performed to a gentle stretch sensation, not pain. Aggressive stretching through severe pain in the freezing stage is counterproductive.
Will My Shoulder Fully Recover?
With appropriate treatment, the vast majority of patients achieve a full or near-full recovery. Physiotherapy significantly accelerates the timeline and improves the final outcome compared to waiting for natural resolution. Patients who receive early, appropriate treatment typically recover in 12–18 months rather than 2–3 years — and with better final function.
If you have shoulder stiffness and pain, book in for an assessment at Burwood Physio. Early diagnosis and stage-appropriate treatment makes a significant difference to how quickly you recover.
Located at Shop 2, 36-38 Victoria St E, Burwood NSW 2134. Open Mon–Fri 7AM–7PM, Sat 7AM–2PM. Call 02 8322 9022 or book online.
Reviewed by the Burwood Physio Clinical Team
BPhty (Hons) | AHPRA Registered Physiotherapists | Member, Australian Physiotherapy Association
Our clinical team has over 20 years of combined experience in musculoskeletal physiotherapy, sports rehabilitation, and pain management. All content is reviewed for clinical accuracy and updated in line with current evidence-based practice guidelines. Meet our team →
