Frozen Shoulder (Adhesive Capsulitis): Why Your Shoulder Is Stiff & Painful (Singapore Guide)

Why Is Your Shoulder Becoming Stiff and Painful?

If your shoulder:

  • Is getting stiffer over time
  • Hurts with movement and at night
  • Makes it hard to lift your arm or reach behind

👉 You may be experiencing frozen shoulder (adhesive capsulitis).

What Is Frozen Shoulder?

Frozen shoulder is a condition where:

  • The joint capsule (lining of the shoulder) becomes tight and thickened
  • Movement becomes restricted and painful
  • Range of motion reduces in multiple directions

👉 It is different from typical shoulder pain because:

  • Stiffness is a key feature
  • Movement is limited even when trying to assist it

Who Is More Likely to Get Frozen Shoulder?

Common risk factors include:

  • Age 40–60
  • Diabetes
  • Thyroid conditions
  • Previous shoulder injury or surgery
  • Prolonged immobility

The 3 Stages of Frozen Shoulder

1. Freezing Stage (Painful Phase)

  • Increasing pain (often worse at night)
  • Gradual loss of movement

2. Frozen Stage (Stiff Phase)

  • Pain may reduce
  • Significant stiffness persists
  • Daily activities become difficult

3. Thawing Stage (Recovery Phase)

  • Gradual return of movement
  • Improvement over time

👉 The condition can last months to over a year, but recovery is possible.

🧠 Pain Science Cornerstone (Biopsychosocial Model)

Frozen shoulder is influenced by:

  • Biological: capsular tightness, inflammation
  • Psychological: fear of movement, guarding
  • Lifestyle: reduced activity, protective behaviour

Key takeaways:

  • Pain does not always indicate worsening damage
  • Stiffness can improve with guided movement
  • Avoidance may prolong recovery

⚠️ When Should You Seek Assessment?

You should consider evaluation if:

  • Shoulder movement is progressively restricted
  • Pain persists beyond a few weeks
  • Night pain is significant
  • Daily tasks become difficult
  • You suspect frozen shoulder

1. Diagnosis First: Confirming Frozen Shoulder

At The Pain Relief Clinic:

  • A structured clinical assessment is performed
  • Passive and active movement are evaluated
  • Pattern of restriction is assessed

Imaging (X-ray, ultrasound, or MRI) may be arranged within 1 working day when appropriate to:

  • Exclude other conditions
  • Confirm diagnosis when unclear

👉 Frozen shoulder is primarily a clinical diagnosis supported by imaging when needed.

2. Progressive Loading & Rehabilitation (Core Foundation)

The key to recovery is:

Stage-Based Progressive Rehabilitation

The goal is to:
👉 Restore movement without aggravating symptoms

Why This Matters

  • Too little movement → worsening stiffness
  • Too aggressive stretching → flare-ups
  • Gradual progression → improved mobility

Active Rehabilitation May Include:

Early Stage

  • Gentle mobility exercises
  • Pain-controlled movement

Mid Stage

  • Increasing range of motion
  • Light strengthening

Late Stage

  • Progressive strengthening
  • Functional movement training

👉 The aim is to restore movement safely over time.

Rehabilitation is tailored to the stage of the condition.

3. Medication: Managing Pain

Medication may help:

  • Reduce pain (especially at night)
  • Allow participation in rehabilitation

First-Line Options

  • Paracetamol
  • NSAIDs

Second-Line Options

  • COX-2 inhibitors
  • Short-term oral opioids (used cautiously)

4. Injection Options (When Needed)

In selected cases:

  • Intra-articular (shoulder joint) injections
  • Hydrodilatation (capsular stretching procedures)

👉 These aim to:

  • Reduce pain
  • Improve mobility
  • Accelerate recovery

5. Physiotherapy: Active + Passive Integrated Care

At The Pain Relief Clinic:

Delivered by MOH AHPC-Licensed Physiotherapists

Active Rehabilitation (Core)

  • Mobility restoration
  • Strengthening
  • Progressive loading

Passive / Adjunct Modalities

  • Soft tissue techniques
  • Pain-modulating therapies

👉 Passive care supports—but does not replace—active rehab.

6. Integrated, Team-Based Care

At The Pain Relief Clinic:

  • Care is led by Dr. Terence Tan, SMC-licensed doctor with over 20 years’ experience
  • Closely coordinated with physiotherapists

Care includes:

  • Diagnosis
  • Stage-based rehabilitation
  • Pain science education
  • Load and activity management

The goal is restoring movement, function, and independence.

7. When Is Specialist Referral Needed?

Referral to orthopaedic specialists is arranged when:

  • Diagnosis is unclear
  • Severe stiffness persists
  • Surgical or procedural options are considered

Final Takeaway

Frozen shoulder can be frustrating—but recovery is achievable.

A structured approach includes:

  1. Accurate diagnosis
  2. Understanding the stage of the condition
  3. Progressive, stage-based rehabilitation
  4. Managing pain appropriately
  5. Using injections when needed
  6. Integrated doctor + physiotherapist care

👉 Modern MSK care focuses on restoring movement progressively—not forcing it too early.

FAQ

Q1: How long does frozen shoulder last?
It can last months to over a year, but recovery is expected.

Q2: Should I force my shoulder to move?
No—aggressive stretching can worsen symptoms.

Q3: Will it go away on its own?
It may improve over time, but treatment can help speed recovery.

Q4: Can physiotherapy help?
Yes, especially when tailored to each stage.

Ask Dr Tan A Question About Your Problem