Shoulder Conditions

Frozen Shoulder vs Rotator Cuff Pain

Understand the causes of shoulder pain, stiffness and restricted movement, and discover how physiotherapy can help.

Shoulder pain can make everyday activities such as getting dressed, reaching overhead, driving and sleeping comfortably difficult. Two possible causes are frozen shoulder and rotator cuff-related shoulder pain. Although both conditions can cause pain, stiffness and difficulty moving the arm, they affect the shoulder in different ways.

Understanding the differences can help you recognise the symptoms you are experiencing and understand when to seek professional advice.

At RD Physio, we provide physiotherapy in Wokingham to help people manage shoulder pain, improve movement and work towards returning to their usual activities. A thorough assessment can help identify the likely cause of your symptoms and determine the most appropriate treatment for your needs.

What Is Frozen Shoulder?

Frozen shoulder, also known as adhesive capsulitis, is a condition in which the capsule surrounding the shoulder joint becomes thickened and tight, restricting movement. It typically develops gradually and can cause persistent pain alongside increasing stiffness.

The shoulder is a ball-and-socket joint that allows the arm to move in several directions. When the joint capsule becomes inflamed and tight, both the movement of the joint and everyday activities can become increasingly restricted.

What Are the Symptoms of Frozen Shoulder?

Progressive shoulder stiffness: The shoulder becomes increasingly difficult to move in different directions.
Pain at rest: Discomfort may occur even when the arm is not being used.
Night pain: Pain may become worse when lying on the affected shoulder and can disturb sleep.
Difficulty reaching overhead: Activities such as reaching into cupboards or washing your hair may become challenging.
Difficulty reaching behind your back: Dressing, fastening clothing and reaching into a back pocket may become uncomfortable or restricted.
Reduced movement when the arm is assisted: The shoulder remains stiff even when someone else gently moves the arm, rather than the person moving it themselves.

The combination of pain and significant restriction in shoulder movement is an important feature of frozen shoulder. However, other shoulder conditions can cause similar symptoms, so an assessment is needed to establish the likely diagnosis.

What Causes Frozen Shoulder?

Frozen shoulder can develop without an obvious injury. It is more common in people aged between 40 and 60, and it is associated with diabetes and certain thyroid conditions. It can also develop after a period of reduced shoulder movement, including following surgery or an injury.

The condition often progresses through three overlapping stages:

1. Freezing stage: Pain gradually develops and movement becomes increasingly restricted. Night pain can be particularly troublesome.

2. Frozen stage: Pain may begin to settle, but stiffness and restricted movement can remain significant.

3. Thawing stage: Shoulder movement gradually improves, although recovery can take considerable time.

These stages do not follow an identical pattern in everyone, and symptoms can persist for months or longer.

How Can Physiotherapy Help Frozen Shoulder?

Physiotherapy can help manage symptoms and support the gradual restoration of shoulder movement. Treatment should be tailored to the stage of the condition, the severity of symptoms and the individual's goals.

Treatment may include:

Advice on managing pain and modifying aggravating activities.
Gentle mobility exercises suited to the shoulder's current range of movement.
A gradual exercise programme to improve function without unnecessarily aggravating symptoms.
Guidance on maintaining appropriate activity while the shoulder recovers.
A review of progress and adjustment of the treatment plan as symptoms change.

Aggressive stretching is not always appropriate, particularly when the shoulder is highly painful. Treatment should progress according to tolerance rather than forcing movement through significant pain.

What Is Rotator Cuff Pain?

The rotator cuff is a group of four muscles and their tendons that help control shoulder movement and stabilise the ball of the upper arm within the shoulder joint.

Rotator cuff-related shoulder pain describes symptoms arising from problems affecting these muscles or tendons.

These may include tendon irritation, tendinopathy, a strain or a tendon tear. The term is broad because several related problems can produce similar symptoms.

Unlike frozen shoulder, rotator cuff-related pain does not usually cause the same degree of restriction in the shoulder joint's passive movement. However, pain can still make the arm difficult to lift or use normally.

What Are the Symptoms of Rotator Cuff Pain?

Common symptoms include:

Pain when lifting the arm: Reaching overhead or lifting objects away from the body may be uncomfortable.
Pain during particular movements: Reaching out to the side, lifting or rotating the arm may aggravate symptoms.
Discomfort when sleeping: Lying on the affected shoulder can increase pain and disturb sleep.
Shoulder weakness: Some people notice reduced strength when lifting or carrying objects.
Pain during exercise or work: Repetitive overhead activity, lifting or certain sporting movements may aggravate symptoms.
Painful movement with relatively preserved mobility: The shoulder may be capable of moving further than the person can comfortably manage actively.

The symptoms vary depending on which structures are affected and how severe the problem is. Pain alone does not necessarily indicate a tendon tear, and weakness can arise from pain inhibition as well as structural damage.

What Causes Rotator Cuff Pain?

Rotator cuff-related shoulder pain may develop gradually or after an increase in activity. Common contributing factors include:

Repeated overhead movements at work, during exercise or in sport.
A sudden increase in training intensity or physical workload.
Reduced shoulder strength or tolerance to loading.
Age-related changes in the rotator cuff tendons.
An acute injury, such as a fall or sudden force through the arm.

Some people develop symptoms without a single identifiable cause. Rotator cuff tendon changes and tears can also be present in people who have no shoulder pain, so imaging findings need to be interpreted alongside symptoms and clinical assessment.

How Can Physiotherapy Help Rotator Cuff Pain?

Physiotherapy aims to reduce the impact of symptoms, improve the shoulder's ability to tolerate activity and restore strength and function.

Depending on the assessment, treatment may include:

Activity modification: Temporarily adjusting movements that significantly aggravate pain while maintaining suitable activity.
Progressive strengthening: Exercises to improve the capacity of the rotator cuff and other muscles supporting shoulder movement.
Mobility exercises: Improving comfortable movement where stiffness is contributing to symptoms.
Gradual return to activity: Building tolerance for work, household tasks, exercise or sport.
Education and self-management: Understanding the condition, setting realistic goals and managing increases in activity.

If a significant rotator cuff tear is suspected, particularly after an injury accompanied by sudden weakness, further medical assessment may be necessary.

Other Common Causes of Shoulder Pain:

Shoulder Impingement and Subacromial Pain
Shoulder Bursitis
Shoulder Osteoarthritis
Rotator Cuff Tear
Pain Referred From the Neck

If you are experiencing shoulder pain or stiffness and are unsure whether it could be frozen shoulder, rotator cuff-related pain or another condition, an assessment can help clarify the likely cause and appropriate next steps.

At RD Physio, treatment is tailored to your symptoms, movement and individual goals. Whether you are struggling to lift your arm, experiencing pain at night or finding everyday activities more difficult, physiotherapy may help you work towards improved movement and function.

Contact RD Physio to discuss your shoulder pain and arrange an appointment

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