Frozen Shoulder Physiotherapy: What to Expect and How Long It Takes

Frozen shoulder — clinically known as adhesive capsulitis — is one of the most misunderstood and frustrating shoulder conditions. It causes progressive pain and stiffness that can make everyday tasks like dressing, reaching, and sleeping extremely difficult. Understanding the three phases of frozen shoulder and how physiotherapy addresses each one is the key to recovery.

What Is Frozen Shoulder?

Frozen shoulder occurs when the joint capsule surrounding the shoulder joint becomes inflamed and then contracts, forming scar tissue (adhesions) that progressively restrict movement. The condition develops in three well-defined phases:

Phase 1: The Freezing Phase (2–9 months)

Gradually increasing shoulder pain, often worst at night. Pain precedes the loss of movement. The shoulder begins to stiffen but may still have reasonable range of motion. This is the most painful phase. Treatment focuses on pain management and maintaining as much movement as possible.

Phase 2: The Frozen Phase (4–12 months)

Pain begins to settle somewhat, but stiffness becomes severe. Movement is significantly restricted in all directions — particularly external rotation (rotating the arm outward), lifting the arm overhead, and reaching behind the back. Daily activities become very difficult. Treatment in this phase involves active mobilisation and progressive stretching to restore range of motion.

Phase 3: The Thawing Phase (5–24 months)

Movement gradually returns. Without treatment, this phase can take up to two years. With physiotherapy, thawing is significantly accelerated and final outcomes are improved.

Who Gets Frozen Shoulder?

• Most common in adults aged 40–60
• Slightly more common in women than men
• People with diabetes have a 10–20% lifetime risk (and tend to have a more severe, prolonged course)
• People with thyroid disorders, cardiovascular disease, or Parkinson's disease have higher rates
• Can develop after shoulder injury, surgery, or any period of shoulder immobilisation

How Physiotherapy Treats Frozen Shoulder

Treatment is tailored to the phase:

• Freezing phase: Pain management techniques (heat, TENS, gentle range-of-motion exercises within comfortable limits), education on activity modification, possible referral for cortisone injection to reduce inflammation
• Frozen phase: Progressive joint mobilisation, targeted capsular stretching, strengthening of shoulder and surrounding muscles, manual therapy, dry needling for associated muscle tightness
• Thawing phase: Progressive strengthening, return to full function, functional exercise and sport-specific rehabilitation

The most important thing you can do is start physiotherapy early — ideally in the freezing phase. Early intervention dramatically shortens the total duration of the condition and reduces the severity of the frozen phase.

Hydrodilatation and Surgery

For patients who are not responding adequately to physiotherapy, hydrodilatation (an ultrasound-guided injection of fluid into the shoulder joint to stretch the capsule) can be very effective, particularly in the frozen phase. Surgery (arthroscopic capsular release) is reserved for cases that fail all conservative measures. Most patients do not require it.