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Frozen Shoulder (Adhesive Capsulitis)

This guide was created by Dr. Michael Hoiles as an educational resource for people experiencing shoulder pain and stiffness. It explains what frozen shoulder is, why it develops, common symptoms, how it is diagnosed, treatment options, exercises commonly used during recovery, expected recovery timelines, and when it may be appropriate to seek an assessment. 

 

Frozen shoulder, also known as adhesive capsulitis, is a painful shoulder condition characterized by a progressive loss of movement. Everyday activities such as reaching overhead, putting on a jacket, fastening clothing behind your back, exercising, or sleeping comfortably can become increasingly difficult as the shoulder becomes stiff. 

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This information is intended for general educational purposes and should not replace an individualized assessment or medical advice. 

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Quick Facts About Frozen Shoulder 

  • Frozen shoulder causes progressive pain and restriction of shoulder movement. 

  • Both active movement and passive movement are typically restricted. 

  • External rotation—turning the arm outward—is often particularly limited. 

  • Frozen shoulder commonly progresses through freezing, frozen, and thawing stages. 

  • Recovery can be slow and often occurs over many months. 

  • Exercise and treatment should be adjusted according to the stage and irritability of the shoulder rather than aggressively forcing movement. 

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Anatomy of Frozen Shoulder 

The shoulder is a ball-and-socket joint formed by the head of the upper arm bone (humerus) and the shallow socket of the shoulder blade (glenoid). This joint is known as the glenohumeral joint. 

Surrounding the joint is a flexible layer of connective tissue called the joint capsule. In a healthy shoulder, the capsule allows enough movement for the arm to reach overhead, rotate, and move behind the body. 

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With frozen shoulder, changes occur within this joint capsule. The capsule becomes inflamed, thickened, and less flexible, which contributes to pain and progressively restricted shoulder movement. 

The restriction is therefore different from simply having tight shoulder muscles. The shoulder joint itself becomes mechanically restricted. 

Frozen shoulder involves inflammation, thickening, and progressive restriction of the capsule surrounding the glenohumeral joint, resulting in pain and loss of shoulder movement. 

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What Is Frozen Shoulder? 

Frozen shoulder, or adhesive capsulitis, is a condition in which the capsule surrounding the shoulder joint becomes painful, thickened, and restricted. 

The hallmark of frozen shoulder is a progressive loss of both active and passive shoulder movement. 

This distinction is important. 

With some rotator cuff injuries, for example, actively lifting the arm may be painful or weak, but another person may still be able to move the relaxed shoulder through a relatively normal range. 

With frozen shoulder, the joint itself becomes restricted, meaning movement is limited even when someone else attempts to move the shoulder. 

External rotation is commonly one of the most restricted movements, although reaching overhead and behind the back also become difficult. 

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Is Frozen Shoulder the Same as Shoulder Stiffness? 

No. Many shoulder conditions can cause temporary stiffness because movement is painful. Frozen shoulder produces a characteristic and often substantial restriction of the shoulder joint itself. 

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Is Frozen Shoulder the Same as a Rotator Cuff Injury? 

No. Rotator cuff injuries involve the muscles or tendons surrounding the shoulder. Frozen shoulder primarily involves the glenohumeral joint capsule. 

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The two conditions can produce similar symptoms and occasionally coexist, which is one reason an appropriate assessment can be helpful. 

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Common Causes & Risk Factors 

The exact reason frozen shoulder develops is not always clear. 

When frozen shoulder develops without an obvious preceding injury or event, it is often described as primary or idiopathic adhesive capsulitis. 

In other cases, it develops following another shoulder problem or a period during which the shoulder has not been moving normally. 

Possible contributing factors include: 

  • Previous shoulder injury 

  • Prolonged shoulder immobilization 

  • Surgery involving the shoulder or upper extremity 

  • Reduced shoulder movement following another painful condition 

  • Increasing age, particularly during middle age 

  • Diabetes 

  • Thyroid disorders 

  • Previous episodes of frozen shoulder 

Frozen shoulder most commonly occurs between approximately 40 and 60 years of age. 

People with diabetes have a higher risk of developing frozen shoulder and may experience a more prolonged course. 

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Common Symptoms 

Frozen shoulder usually develops gradually rather than following one specific traumatic event. 

  • Shoulder Pain: Pain may initially be the dominant symptom. It is commonly felt around the outside or front of the shoulder and may extend into the upper arm. 

  • Progressive Stiffness: Over time, the shoulder becomes increasingly difficult to move. ​​Commonly restricted movements include: ​​

    • Reaching overhead 

    • Reaching behind the back

    • Putting on a jacket 

    • Fastening clothing 

    • Washing or styling hair 

    • Reaching into a back pocket 

    • Reaching for a seat belt 

    • Rotating the arm outward 

  • ​Night Pain: Sleeping can become particularly uncomfortable during the painful stages. People may have difficulty lying on the affected shoulder and may wake when changing positions. 

  • Difficulty With Exercise: Overhead presses, bench pressing, push-ups, pull-ups, swimming, throwing, golf, and many other activities can become difficult as shoulder mobility decreases. 

  • Loss of Passive Movement 

​One of the more characteristic findings is that the shoulder remains restricted even when another person attempts to move the relaxed arm. 

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How Is Frozen Shoulder Diagnosed? 

Frozen shoulder is primarily diagnosed through the history and physical examination. 

An assessment typically considers: 

  • How the symptoms began 

  • Whether there was a previous injury 

  • How symptoms have changed over time 

  • Which movements have become restricted 

  • Night pain 

  • Previous shoulder problems 

  • Medical conditions associated with frozen shoulder 

Physical Examination 

Both active and passive shoulder range of motion are important. 

Frozen shoulder typically produces restriction in multiple directions, with external rotation often being particularly limited. 

Shoulder strength, neck movement, neurological function, and other shoulder structures may also be assessed to determine whether another condition could be contributing. 

Is Imaging Necessary? 

Imaging is not always required to diagnose frozen shoulder. 

X-rays may sometimes be used to exclude other causes of significant shoulder stiffness, such as advanced arthritis. 

Ultrasound or MRI may be appropriate when another shoulder condition—such as a substantial rotator cuff tear—is suspected or when the diagnosis remains uncertain. 

Imaging findings should always be interpreted alongside the history and physical examination. ​​

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What Helps Frozen Shoulder? 

Treatment depends considerably on the stage and irritability of the shoulder. 

  • Keep the Shoulder Moving: Complete immobilization is generally not helpful. Regular comfortable movement can help maintain available range of motion and gradually restore function. 

  • Exercise: Exercise is an important part of frozen shoulder management, but more aggressive stretching is not necessarily better. During a highly painful stage, repeated forceful stretching may significantly aggravate symptoms. As pain decreases and stiffness becomes the primary limitation, progressively greater emphasis can be placed on restoring mobility and strength. 

  • Modify Aggravating Activities: Temporary modifications may be required for activities involving repeated overhead reaching, heavy lifting, or movements that significantly increase pain. The goal is usually modification rather than complete avoidance of activity. 

  • Medication: Over-the-counter or prescription medication may sometimes help manage pain, particularly during the more painful stages. Medication decisions should be discussed with a physician or pharmacist when appropriate. 

  • Corticosteroid Injections: A corticosteroid injection may be considered in selected cases, particularly during the painful early stage. Injections may provide short-term pain relief and can sometimes make it easier to participate in mobility exercises and rehabilitation. 

  • Hydrodilatation: Hydrodilatation involves injecting fluid into the shoulder joint to expand the restricted capsule. It may be considered for selected patients with persistent frozen shoulder. 

  • Surgery: Surgery is rarely the first treatment. Procedures such as manipulation under anesthesia or arthroscopic capsular release may be considered when substantial restrictions persist despite an appropriate period of conservative management. 

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How Chiropractic Can Help 

Chiropractic management of frozen shoulder should be tailored to the stage of the condition rather than simply attempting to force the shoulder through its restriction. 

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Assessment 

A thorough assessment can help determine whether the movement restriction is consistent with frozen shoulder and identify other potential contributors to shoulder pain. 

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Joint Mobility 

Gentle shoulder mobilization may be used to maintain or gradually improve movement. 

The intensity of treatment should reflect how irritable the shoulder is. 

During later stages, progressively stronger mobilization may sometimes be appropriate as pain decreases and stiffness becomes the dominant limitation. 

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Thoracic and Shoulder Blade Mobility 

Movement of the upper back and shoulder blade contributes to normal overhead function. 

Addressing restrictions in these regions may help maximize overall shoulder movement while the glenohumeral joint remains restricted. 

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Soft Tissue Therapy 

Treatment of surrounding shoulder, chest, upper-back, and neck muscles may help reduce secondary muscle tension and make movement more comfortable. 

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Exercise Prescription 

A home exercise program can help maintain available movement and gradually restore mobility and strength. 

Exercises should change as the condition progresses. 

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Return-to-Activity Guidance 

As mobility improves, rehabilitation can progressively prepare the shoulder for work, weight training, golf, swimming, racquet sports, and other activities. 

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Recovery Timeline 

Frozen shoulder is unusual because recovery often takes considerably longer than many other common musculoskeletal conditions. 

Traditionally, the condition is divided into three overlapping stages. 

Stage 1 – Freezing Stage 

Typical features: 

  • Increasing shoulder pain 

  • Increasing stiffness 

  • Night pain 

  • Progressive loss of movement 

This stage may last several months. 

Treatment generally emphasizes symptom management, maintaining tolerable movement, and avoiding unnecessarily aggressive stretching. 

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Stage 2 – Frozen Stage 

Pain may gradually become less intense, but stiffness remains significant. 

Everyday activities may still be difficult because of limited shoulder movement. 

Rehabilitation can gradually place greater emphasis on restoring mobility and beginning progressive strengthening. 

 

Stage 3 – Thawing Stage 

Shoulder movement gradually begins to improve. 

Exercise can progressively focus on: 

  • Restoring range of motion 

  • Rebuilding strength 

  • Improving overhead function 

  • Returning to normal exercise, work, and recreational activities 

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How Long Does Frozen Shoulder Last? 

Recovery varies substantially. 

Many cases improve over 12–24 months, although some recover sooner and others can take considerably longer. 

The old belief that every frozen shoulder simply resolves completely on its own is overly simplistic. Some people continue to experience some degree of stiffness or functional limitation even after the most painful stage has resolved. 

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Can I Still Exercise With Frozen Shoulder? 

In most cases, yes. 

Maintaining general physical activity is usually encouraged. 

The shoulder portion of your exercise program may need to be modified according to the stage of the condition. 

Activities Often Better Tolerated Depending on Symptoms: 

  • Walking 

  • Stationary cycling 

  • Lower-body strength training 

  • Core exercises 

  • Comfortable pulling exercises 

  • Light shoulder exercises within available range 

  • Gentle mobility exercises 

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Activities That May Need Temporary Modification (particularly during the painful stage): 

  • Heavy overhead pressing 

  • Deep bench pressing 

  • Behind-the-neck exercises 

  • Repeated overhead movements 

  • Heavy lateral raises 

  • Exercises requiring substantial shoulder external rotation 

  • Movements that repeatedly produce severe pain 

The goal is not necessarily to avoid every uncomfortable movement. Instead, training should remain within a level that does not repeatedly create significant flare-ups. 

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Exercises Commonly Recommended 

Frozen shoulder rehabilitation should progress according to symptoms rather than following a rigid timeline. 

Phase 1 – Pain Reduction & Gentle Mobility 

During the more painful or “freezing” stage, exercises may include: 

  • Pendulum Exercises: Allow the arm to relax while gently moving it in small circles or directions. 

  • Assisted Shoulder Flexion: Use the opposite arm, a stick, or another form of assistance to gently raise the affected arm. 

  • Table Slides: Slide the hands forward along a table while allowing the body to move with the shoulder. 

  • Gentle External Rotation: Use a stick or the opposite hand to gently assist the shoulder into external rotation. 

  • Comfortable Isometric Exercises: Gentle muscle contractions can begin maintaining shoulder strength without requiring large amounts of movement. 

Goal: Maintain comfortable movement without repeatedly provoking the shoulder. 

 

Phase 2 – Restore Mobility & Begin Strengthening 

As pain decreases and stiffness becomes more prominent, exercises may progress to: 

  • Wall Slides: Gradually increase comfortable overhead movement using the wall for assistance. 

  • External Rotation Stretching: Progressively work toward restoring outward rotation. 

  • Cross-Body Mobility: Gentle movements across the body may help improve posterior shoulder mobility when appropriate. 

  • Resistance-Band Rows: Begin strengthening the muscles around the shoulder blade. 

  • Resistance-Band External Rotation: Begin rebuilding rotator cuff strength within the available range. 

  • Scaption: Lightly raise the arm in the plane of the shoulder blade as movement improves. 

Goal: Gradually restore shoulder movement while rebuilding strength and control. 

 

Phase 3 – Functional Strength & Return to Activity 

As mobility improves, rehabilitation may progress toward: 

  • Progressive Overhead Pressing: Gradually restore the ability to lift overhead. 

  • Rows and Pulling Exercises: Increase resistance as tolerated. 

  • Push-Up Progressions: Progress from wall or elevated push-ups toward normal variations. 

  • Loaded Carries: Improve shoulder stability and tolerance to load. 

  • Rotator Cuff Strengthening: Progress resistance and range of motion. 

  • Activity-Specific Exercises: Gradually reproduce the demands of work, golf, swimming, racquet sports, weight training, or other activities. 

Goal: Restore sufficient mobility, strength, and confidence for normal activities. 

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Common Mistakes That Slow Recovery of Frozen Shoulder

  • Forcing the Shoulder Too Aggressively 

    • Frozen shoulder can be frustrating, but repeatedly forcing painful stretches does not necessarily speed recovery. During the highly irritable stage, aggressive stretching may worsen symptoms. 

  • Completely Resting the Shoulder 

    • Avoiding movement altogether may contribute to further loss of function. Maintaining tolerable movement is generally preferable. 

  • Treating Every Stage the Same Way 

    • The treatment appropriate during the painful freezing stage may be very different from what is useful later in recovery. Rehabilitation should evolve as symptoms change. 

  • Expecting a Quick Recovery 

    • Frozen shoulder commonly takes months rather than weeks to resolve. Understanding this timeline can make the gradual recovery process easier to manage. 

  • Stopping Rehabilitation When Pain Improves 

    • Pain may improve before full shoulder mobility and strength return. Continuing rehabilitation can help restore function during the thawing stage. 

  • Assuming All Shoulder Stiffness Is Frozen Shoulder 

    • Rotator cuff injuries, arthritis, previous fractures, and other shoulder problems can also limit movement. A proper assessment can help distinguish between these conditions. 

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When Should You Seek an Assessment? 

Consider having your shoulder assessed if: 

  • Shoulder pain or stiffness continues to worsen 

  • You are progressively losing movement 

  • Symptoms interfere with sleep 

  • You cannot comfortably perform normal daily activities 

  • You are unsure whether you have frozen shoulder or another shoulder condition 

  • Symptoms persist despite modifying activity 

  • You are having difficulty returning to exercise or work 

  • You experienced significant trauma before the symptoms began 

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Seek Prompt Medical Attention If: 

  • You cannot move the arm following significant trauma 

  • The shoulder appears deformed 

  • You develop substantial swelling or bruising after an injury 

  • You experience progressive arm weakness or neurological symptoms 

  • The shoulder becomes hot, red, and swollen and you develop fever or feel unwell 

  • Shoulder pain occurs with chest pain, shortness of breath, sweating, dizziness, or other concerning symptoms 

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Frequently Asked Questions 

Does frozen shoulder go away on its own? 

Frozen shoulder often improves over time, but recovery can be slow and may take many months. 

Not everyone automatically regains completely normal shoulder movement, so maintaining appropriate activity and rehabilitation throughout recovery can be helpful. 

 

Should I stretch a frozen shoulder every day? 

Gentle regular mobility exercises are commonly recommended, but the intensity should depend on the stage of the condition. 

During the painful freezing stage, aggressive stretching may aggravate symptoms. As pain decreases, stretching and mobility work can gradually become more intensive. 

 

Can massage fix frozen shoulder? 

Massage may help reduce tension or discomfort in muscles surrounding the shoulder, but frozen shoulder primarily involves restriction of the shoulder joint capsule. 

Massage alone is therefore unlikely to restore normal shoulder movement. 

 

Can chiropractic treatment help frozen shoulder? 

Chiropractic care may help manage frozen shoulder through assessment, appropriate joint mobilization, treatment of surrounding areas, exercise prescription, and guidance on gradually returning to activity. 

Treatment should be adjusted according to the stage and irritability of the shoulder. 

 

What is the difference between frozen shoulder and a rotator cuff tear? 

Frozen shoulder usually produces substantial restriction of both active and passive shoulder movement. 

A rotator cuff tear may cause pain and weakness, but passive shoulder movement can remain relatively well preserved. 

A physical examination can often help distinguish between the two. 

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Summary 

Frozen shoulder can be painful and frustrating, but gradual improvement is expected for most people. 

✔ Frozen shoulder involves progressive restriction of the capsule surrounding the shoulder joint. 

✔ Both active and passive shoulder movement are typically limited. 

✔ External rotation is often particularly restricted. 

✔ Recovery usually occurs gradually over many months rather than several weeks. 

✔ Exercise should be matched to the stage and irritability of the shoulder. 

✔ Aggressive stretching during a highly painful stage is not necessarily better. 

✔ Maintaining appropriate activity and gradually rebuilding mobility and strength can support recovery. 

✔ An assessment can help distinguish frozen shoulder from rotator cuff injuries and other causes of shoulder pain. 

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Ready to Get Back to Moving Comfortably? 

If shoulder pain and stiffness are preventing you from exercising, sleeping comfortably, working, or doing the activities you enjoy, an assessment can help determine what may be contributing to your symptoms and what you can do about it. 

Dr. Michael Hoiles is a Calgary chiropractor who provides evidence-informed care combining hands-on treatment, exercise-based rehabilitation, and practical advice to help people recover from injury, move better, and stay active. 

Book an appointment today to begin your recovery and take the next step toward moving comfortably again. 

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