Understanding the Shoulder Joint

The shoulder is one of the most mobile joints in the body. It is made up of three bones:

• Humerus – the upper arm bone
• Scapula – the shoulder blade
• Clavicle – the collarbone

The main joint, called the glenohumeral joint, functions as a ball-and-socket joint. The rounded head of the humerus fits into a shallow socket in the scapula called the glenoid.

Various shoulder structures, including muscles, tendons and ligaments, work together to allow smooth and stable movement.

Surrounding this joint is a flexible capsule made of connective tissue that helps stabilize the shoulder while still allowing a wide range of motion. When this capsule becomes inflamed and thickened, it tightens around the joint and restricts movement. This condition is known as adhesive capsulitis, or frozen shoulder.

What Is Frozen Shoulder?

Frozen shoulder occurs when the shoulder joint capsule becomes inflamed and stiff, limiting the joint’s ability to move freely. Scar tissue may develop within the capsule, further restricting movement and causing pain.

The condition often develops gradually over several months and may last for an extended period without treatment.

Frozen shoulder is most common in adults between the ages of 40 and 60 and occurs more frequently in women than in men.

Stages of Frozen Shoulder

Frozen shoulder typically develops in three stages.

Freezing Stage

During the freezing stage, shoulder pain gradually increases and movement becomes more limited.

Common symptoms include:

• Persistent shoulder pain
• Difficulty raising or rotating the arm
• Increasing stiffness
• Pain that worsens at night

This stage can last six weeks to nine months.

Frozen Stage

During the frozen stage, pain may decrease somewhat, but the shoulder becomes significantly stiffer.

Patients often experience:

• Severe loss of shoulder motion
• Difficulty performing daily activities
• Limited ability to lift or rotate the arm

This stage may last four to six months.

Thawing Stage

In the thawing stage, shoulder mobility slowly begins to improve as the capsule loosens.

Range of motion gradually returns, although recovery may take six months to two years without treatment.

Causes of Frozen Shoulder

Frozen shoulder often develops when the shoulder joint becomes immobilized for a prolonged period. Reduced shoulder movement can lead to inflammation and tightening of the joint capsule.

Immobilization may also reduce the production of synovial fluid, which normally lubricates the shoulder joint and helps maintain smooth movement.

Common causes include:

• Shoulder injury
• Rotator cuff tears
• Shoulder surgery
• Arm fractures
• Stroke recovery
• Extended shoulder immobilization

In many cases, frozen shoulder develops without a clearly identifiable injury.

Risk Factors for Frozen Shoulder

Certain medical conditions and lifestyle factors increase the likelihood of developing frozen shoulder.

Common risk factors include:

• Diabetes
• Thyroid disorders
• Heart disease
• Parkinson’s disease
• Previous shoulder injury
• Prolonged inactivity
• Age over 40

People with diabetes are significantly more likely to develop adhesive capsulitis than the general population.

Symptoms of Frozen Shoulder

Symptoms usually develop gradually and worsen over time.

Common symptoms include:

• Shoulder pain that worsens with movement
• Severe pain, particularly during the early stages
• Stiffness in the shoulder joint
• Reduced range of motion
• Difficulty lifting the arm
• Difficulty reaching overhead or behind the back
• Pain that interferes with sleep
• Weakness due to limited shoulder use

As the condition progresses, simple tasks such as dressing, reaching for objects or combing hair may become difficult.

Diagnosing Frozen Shoulder

Diagnosing frozen shoulder typically begins with a physical examination by an orthopedic specialist.

During the evaluation, your physician will:

• Review your symptoms and medical history
• Assess shoulder range of motion
• Compare active and passive shoulder movement
• Evaluate pain and joint stiffness

Imaging tests may be used to rule out other shoulder conditions.

These may include:

• X-rays to identify arthritis or structural abnormalities
• MRI to evaluate soft tissues such as rotator cuff tendons
• Ultrasound to assess inflammation or other shoulder conditions

Frozen shoulder is primarily diagnosed based on clinical findings and imaging results that rule out other causes of shoulder stiffness.

Rotator Cuff and Frozen Shoulder

The rotator cuff is a group of muscles and tendons that help stabilize the shoulder joint and maintain proper positioning of the humeral head within the socket.

In some cases of frozen shoulder, the rotator cuff may become irritated or inflamed, further limiting shoulder movement and contributing to pain and stiffness.

Physical therapy plays a key role in improving shoulder mobility, strengthening the rotator cuff and restoring normal shoulder function.

Occasionally, a rotator cuff tear may occur alongside frozen shoulder, which may require additional evaluation and treatment.

Non-Surgical Treatment for Frozen Shoulder

Most cases improve with non-surgical treatment. Relatively simple treatments such as physical therapy, anti-inflammatory medications and steroid injections are often effective.

The primary goals of treatment are pain relief and preventing further stiffness.

Activity Modification

Limiting painful activities while maintaining gentle shoulder movement can help prevent worsening stiffness.

Anti-Inflammatory Medications

Nonsteroidal anti-inflammatory drugs (NSAIDs) may help reduce pain and inflammation.

Corticosteroid Injections

Steroid injections into the shoulder joint may reduce inflammation and allow patients to participate more effectively in physical therapy.

Physical Therapy

Physical therapy is one of the most effective treatments for frozen shoulder.

A rehabilitation program typically focuses on:

• Stretching the shoulder capsule
• Restoring joint mobility
• Strengthening surrounding muscles
• Improving shoulder mechanics

Consistent therapy can significantly improve recovery time and function.

Advanced Treatment Options

If symptoms do not improve with conservative treatment, advanced procedures may be considered.

Joint Distension (Hydrodilatation)

Joint distension involves injecting sterile fluid into the joint capsule to stretch and expand the capsule, improving mobility and reducing stiffness.

Arthroscopic Capsular Release

In more severe cases, arthroscopic shoulder surgery may be used to release the tight capsule and remove scar tissue.

During this minimally invasive procedure:

• Small incisions are made around the shoulder
• A camera (arthroscope) is inserted into the joint
• Tight portions of the capsule are released
• Scar tissue restricting motion is removed

Following surgery, physical therapy is essential to restore motion and prevent stiffness from returning.

Shoulder Manipulation and Frozen Shoulder

Shoulder manipulation under anesthesia is another treatment option for some patients with severe frozen shoulder.

During this procedure, the surgeon gently moves the shoulder through its full range of motion while the patient is under anesthesia. This can help break up scar tissue and adhesions within the joint capsule.

Because the procedure carries some risk, including fractures or nerve injury, it is typically reserved for cases that do not improve with conservative treatment.

Physical therapy following the procedure is essential to maintain improved motion.

Recovery and Rehabilitation

Recovery from frozen shoulder varies depending on the severity of the condition and the treatment approach.

In some cases, recovery may take up to three years, highlighting the importance of early diagnosis and treatment.

Most patients benefit from a structured rehabilitation program designed to:

• Restore range of motion
• Strengthen shoulder muscles
• Improve joint stability
• Prevent recurrence

Even after surgical treatment, consistent physical therapy is critical for optimal recovery.

Living With Frozen Shoulder

Living with frozen shoulder can be challenging due to pain and limited shoulder movement. Simple daily activities such as dressing, reaching overhead or sleeping comfortably may become difficult.

Regular stretching and motion exercises recommended by a physical therapist can help maintain shoulder mobility and reduce discomfort.

Applying heat or cold packs may also help relieve symptoms.

Avoiding heavy lifting, repetitive overhead activity and movements that worsen pain can help prevent additional strain on the shoulder while it heals.

Working closely with your healthcare team ensures a personalized treatment plan that supports recovery and improves shoulder function.

Preventing Frozen Shoulder

Although frozen shoulder cannot always be prevented, certain strategies may reduce risk.

Helpful prevention strategies include:

• Maintaining shoulder mobility after injury or surgery
• Performing recommended rehabilitation exercises
• Avoiding prolonged shoulder immobilization
• Managing underlying health conditions such as diabetes
• Maintaining shoulder strength and flexibility

Early movement following injury or surgery can help prevent joint stiffness.

When to See a Shoulder Specialist

You should seek evaluation from an orthopedic specialist if you experience:

• Shoulder stiffness that worsens over time
• Persistent shoulder pain lasting several weeks
• Difficulty lifting or rotating your arm
• Limited shoulder mobility affecting daily activities
• Shoulder pain that interferes with sleep

Early treatment can help prevent severe stiffness and reduce recovery time.

Schedule an Appointment

If you are experiencing shoulder stiffness, pain or limited movement, the orthopedic specialists at OrthoTexas can help.

Our team provides comprehensive evaluation and advanced treatment options for frozen shoulder and other shoulder conditions.