Frozen Shoulder (Adhesive Capsulitis) & Physiotherapy

Frozen shoulder, also known as adhesive capsulitis, is a condition characterized by stiffness and pain in your shoulder joint. 

 

After a period of worsening symptoms, frozen shoulder tends to get better, although full recovery may take up to 3 years. Physical therapy, with a focus on shoulder flexibility, is the primary treatment recommendation for frozen shoulder.

Frozen shoulder most commonly affects people between the ages of 40 and 60, and occurs in women more often than men. In addition, people with diabetes are at an increased risk for developing frozen shoulder.

Anatomy

Your shoulder is a ball-and-socket joint made up of three bones: your upper arm bone (humerus), your shoulder blade (scapula), and your collarbone (clavicle).

The head of the upper arm bone fits into a shallow socket in your shoulder blade. Strong connective tissue, called the shoulder capsule, surrounds the joint.

To help your shoulder move more easily, synovial fluid lubricates the shoulder capsule and the joint.

The shoulder capsule surrounds the shoulder joint and rotator cuff tendons.

Description

In frozen shoulder, the shoulder capsule thickens and becomes stiff and tight. Thick bands of tissue — called adhesions — develop. In many cases, there is less synovial fluid in the joint.

The hallmark signs of this condition are severe pain and being unable to move your shoulder -- either on your own or with the help of someone else. It develops in three stages:

Stage 1: Freezing

In the "freezing" stage, you slowly have more and more pain. As the pain worsens, your shoulder loses range of motion. Freezing typically lasts from 6 weeks to 9 months.

Stage 2: Frozen

Painful symptoms may actually improve during this stage, but the stiffness remains. During the 4 to 6 months of the "frozen" stage, daily activities may be very difficult.

Stage 3: Thawing

Shoulder motion slowly improves during the "thawing" stage. Complete return to normal or close to normal strength and motion typically takes from 6 months to 2 years.

In frozen shoulder, the smooth tissues of the shoulder capsule become thick, stiff, and inflamed.

Cause

The causes of frozen shoulder are not fully understood. There is no clear connection to arm dominance or occupation. A few factors may put you more at risk for developing frozen shoulder.

Risk factors

Certain factors may increase your risk of developing frozen shoulder.

Age and sex

People 40 and older, particularly women, are more likely to have frozen shoulder.

Immobility or reduced mobility

People who've had prolonged immobility or reduced mobility of the shoulder are at higher risk of developing frozen shoulder. Immobility may be the result of many factors, including:

• Rotator cuff injury
• Broken arm
• Stroke
• Recovery from surgery

Systemic diseases

People who have certain diseases appear more likely to develop frozen shoulder. Diseases that might increase risk include:

• Diabetes
• Overactive thyroid (hyperthyroidism)
• Underactive thyroid (hypothyroidism)
• Cardiovascular disease
• Tuberculosis
• Parkinson's disease

Examination

Physical Examination

After discussing your symptoms and medical history, your doctor will examine your shoulder.

Your doctor will move your shoulder carefully in all directions to see if movement is limited and if pain occurs with the motion. The range of motion when someone else moves your shoulder is called "passive range of motion." Your doctor will compare this to the range of motion you display when you move your shoulder on your own ("active range of motion"). People with frozen shoulder have limited range of motion both actively and passively.

Imaging Tests

Other tests that may help your doctor rule out other causes of stiffness and pain include:

X-rays. Dense structures, such as bone, show up clearly on x-rays. X-rays may show other problems in your shoulder, such as arthritis.

Magnetic resonance imaging (MRI) and ultrasound. These studies can create better images of soft tissues. They are not required to diagnose frozen shoulder, however, they may help to identify other problems in your shoulder, such as a torn rotator cuff.

How Can a Physical Therapist Help?

Your physical therapist's overall goal is to restore your movement, so you can perform your daily activities. Once the evaluation process has identified the stage of your condition, your physical therapist will create an individualized exercise program tailored to your specific needs. Exercise has been found to be most effective for those who are in stage 2 or higher. Your treatment may include:

Stages 1 and 2

Exercises and manual therapy. Your physical therapist will help you maintain as much range of motion as possible and will help reduce your pain. Your therapist may use a combination of range-of-motion exercises and manual therapy (hands-on) techniques to maintain shoulder movement.

Modalities. Your physical therapist may use heat and ice treatments (modalities) to help relax the muscles prior to other forms of treatment.

Home-exercise program. Your physical therapist will give you a gentle home-exercise program designed to help reduce your loss of motion. Your therapist will warn you that being overly aggressive with stretching in this stage may make your shoulder pain worse.

Your physical therapist will match your treatment activities and intensity to your symptoms, and educate you on the appropriate use of the affected arm. Your therapist will carefully monitor your progress to ensure a safe healing procedure is followed. 

Pain medication. Sometimes, conservative care cannot reduce the pain of adhesive capsulitis. In that case, your physical therapist may refer you for an injection of a safe anti-inflammatory and pain-relieving medication. Research has shown that although these injections don’t provide longer-term benefits for range of motion and don’t shorten the duration of the condition, they do offer short-term pain reduction.

Stage 3

The focus of treatment during phase 3 is on the return of motion. Treatment may include:

Stretching techniques. Your physical therapist may introduce more intense stretching techniques to encourage greater movement and flexibility.

Manual therapy. Your physical therapist may take your manual therapy to a higher level, encouraging the muscles and tissues to loosen up.

Strengthening exercises. You may begin strengthening exercises targeting the shoulder area as well as your core muscles. Your home-exercise program will change to include these exercises.

Stage 4

In the final stage, your physical therapist will focus on the return of "normal" shoulder body mechanics and your return to normal, everyday, pain-free activities. Your treatment may include:

Stretching techniques. The stretching techniques in this stage will be similar to previous ones you’ve learned, but will focus on the specific directions and positions that are limited for you. 

Manual therapy. Your physical therapist may perform manual therapy techniques in very specific positions and ranges that are problematic for you. They will focus on eliminating the last of your limitations.

Strength training. Your physical therapist will prescribe specific strengthening exercises related to any weakness that you may have to help you perform your work or recreational tasks. 

Return to work or sport. Your physical therapist will address movements and tasks that are required in your daily and recreational life.