Shoulder Pain Physiotherapy: Diagnosis and Treatment Options

Shoulder Anatomy

The shoulder complex comprises four joints working together to produce the arm's extensive range of motion:

• Glenohumeral joint: The primary ball-and-socket joint where the head of the humerus (upper arm bone) articulates with the glenoid fossa of the scapula. The glenoid is relatively shallow, providing mobility at the expense of bony stability.
• Acromioclavicular (AC) joint: Where the clavicle (collarbone) meets the acromion process of the scapula
• Sternoclavicular joint: Where the clavicle meets the sternum (breastbone) — the only bony attachment of the upper limb to the trunk
• Scapulothoracic articulation: The gliding interface between the scapula and the ribcage, which contributes approximately one-third of total shoulder elevation

The rotator cuff is a group of four muscles — supraspinatus, infraspinatus, teres minor, and subscapularis — that surround the glenohumeral joint. These muscles work together to compress the humeral head into the glenoid, providing dynamic stability during shoulder movements. The rotator cuff tendons pass through the subacromial space beneath the acromion, where they are susceptible to compression and wear.

Other important structures include the labrum (a ring of fibrocartilage that deepens the glenoid), the biceps tendon (which originates from the superior labrum), and the subacromial bursa (a fluid-filled sac that reduces friction between the rotator cuff and the acromion).

Common Shoulder Conditions

Rotator Cuff Tendinopathy and Tears

Rotator cuff pathology is the most common cause of shoulder pain in adults. The supraspinatus tendon is most frequently affected due to its position in the subacromial space. Rotator cuff conditions exist on a spectrum, from reactive tendinopathy (early, irritable) to degenerative tendinopathy and partial or full-thickness tears.

Symptoms typically include pain with overhead activities, difficulty sleeping on the affected side, and weakness with resisted arm movements. Research shows that the prevalence of rotator cuff tears increases with age — asymptomatic tears are found on imaging in up to 50% of individuals over 60 — highlighting that structural changes do not always correlate with symptoms.

Frozen Shoulder (Adhesive Capsulitis)

Frozen shoulder is characterised by progressive stiffness and pain in the glenohumeral joint due to inflammation and fibrosis of the joint capsule. It typically progresses through three overlapping stages:

1. Freezing stage (2–9 months): Gradually increasing pain and progressive loss of range of motion
2. Frozen stage (4–12 months): Pain may begin to improve, but stiffness remains significant
3. Thawing stage (5–24 months): Gradual return of range of motion

Frozen shoulder affects approximately 2–5% of the general population and is more common in women, individuals aged 40–60, and people with diabetes mellitus (prevalence up to 20% in diabetics). The total duration of the condition is typically 12–30 months, though some individuals experience residual stiffness beyond this timeframe.

Subacromial Impingement

Subacromial impingement — also termed subacromial pain syndrome — refers to pain arising from compression of structures within the subacromial space, including the rotator cuff tendons and the subacromial bursa. It is characterised by a "painful arc" — pain during mid-range arm elevation (typically 60–120 degrees) — and pain with overhead reaching.

Modern understanding has moved away from purely structural explanations (the acromion "impinging" on the tendon) towards a model that considers rotator cuff loading capacity, scapular movement patterns, and the overall balance of forces around the shoulder. This has important treatment implications — the focus is on improving shoulder mechanics and tendon capacity rather than simply "creating more space."

Shoulder Instability

Shoulder instability occurs when the humeral head moves excessively within the glenoid, resulting in subluxation (partial displacement) or dislocation (complete displacement). It is broadly classified as:

• Traumatic instability: Typically follows an acute dislocation event, often with associated labral tear (Bankart lesion) and/or bony damage (Hill-Sachs lesion). Most common in young male athletes in contact sports.
• Atraumatic instability: Develops without a specific injury, often in individuals with generalised ligament laxity. May present as multidirectional instability affecting the shoulder in more than one direction.

Following a first-time traumatic anterior dislocation, the recurrence rate is approximately 70–90% in patients under 20 years of age, decreasing to 20–30% in those over 40. This high recurrence rate in young athletes has led to increased consideration of early surgical stabilisation in this population.

AC Joint Pathology

Acromioclavicular joint injuries range from mild sprains to complete dislocations and are commonly caused by a direct fall onto the point of the shoulder. AC joint degeneration (osteoarthritis) is also common and can cause localised pain at the top of the shoulder, particularly with cross-body movements.

Physiotherapy Assessment

A comprehensive shoulder assessment by a physiotherapist typically includes:

• Detailed history: Mechanism of onset, symptom behaviour, aggravating and easing factors, functional limitations, and relevant medical history
• Observation: Posture, muscle wasting, scapular position and symmetry
• Active and passive range of motion: Assessing movement quantity and quality, including scapular rhythm
• Strength testing: Resisted isometric and isotonic testing of the rotator cuff, deltoid, and scapular stabilisers
• Special tests: Specific provocation tests for rotator cuff pathology (Jobe's, Hawkins-Kennedy, external rotation lag sign), instability (apprehension, relocation, load and shift), labral pathology (O'Brien's), and AC joint involvement (cross-body adduction)
• Cervical spine screen: Neck pathology can refer pain to the shoulder and must be excluded
• Neurovascular assessment: To rule out nerve involvement or vascular pathology

Treatment Approaches

Exercise Therapy

Exercise is the foundation of shoulder pain physiotherapy and has the strongest evidence base across all common shoulder conditions. A well-designed exercise programme addresses:

• Rotator cuff strengthening: Progressive resistance exercises for external rotation, internal rotation, and elevation. Isometric exercises are used initially for pain management, progressing to isotonic and eccentric loading.
• Scapular stabilisation: Exercises targeting the serratus anterior, lower trapezius, and middle trapezius to improve scapular positioning and movement control. Common exercises include wall slides, serratus punches, and prone rows.
• Range of motion restoration: Passive, active-assisted, and active stretching to restore full shoulder mobility. For frozen shoulder, gentle sustained stretching at end range is prioritised.
• Kinetic chain: Addressing thoracic spine mobility, postural correction, and trunk strengthening, as restrictions in these areas can contribute to shoulder overload.

Manual Therapy

Physiotherapists may use manual therapy techniques to complement exercise, including:

• Glenohumeral joint mobilisation and manipulation
• Thoracic spine mobilisation (to improve thoracic extension and rotation)
• Soft tissue massage and trigger point release of the rotator cuff, upper trapezius, and pectoral muscles
• Shoulder joint distraction techniques for frozen shoulder

Load Management and Activity Modification

Adjusting activity levels to allow irritable tissues to settle while maintaining function is a critical aspect of shoulder pain management. This does not mean complete rest — rather, it involves identifying and modifying the specific movements or loads that aggravate symptoms while continuing with tolerable activities. Your physiotherapist can guide you on appropriate activity modifications for your workplace, sport, or daily routine.

Education

Understanding your condition is a powerful component of recovery. Evidence suggests that patients who receive clear education about their diagnosis, expected recovery timeline, and the rationale for treatment are more likely to adhere to their rehabilitation programme and achieve better outcomes. For shoulder conditions in particular, understanding that structural changes on imaging do not always equate to pain can reduce anxiety and fear-avoidance behaviour.

Adjunct Treatments

Depending on the specific condition and severity, additional treatments may include:

• Dry needling: For myofascial trigger points contributing to shoulder pain. Learn more in our dry needling guide.
• Taping: Kinesiology tape or rigid tape to improve scapular positioning or provide proprioceptive feedback
• Corticosteroid injection: May be considered for acute bursitis or frozen shoulder (freezing stage) to facilitate participation in physiotherapy. Typically arranged via your GP or sports doctor.
• Hydrodilatation: A guided injection procedure for frozen shoulder where fluid is injected into the joint capsule to stretch it. Often combined with corticosteroid.

Key Exercises for Shoulder Pain

While exercise prescription should be individualised, the following exercises are commonly included in shoulder rehabilitation programmes:

Rotator Cuff Strengthening

• Side-lying external rotation: Lying on the unaffected side, elbow bent to 90 degrees at your side, rotate the forearm upward against gravity or a light resistance band. 3 sets of 10–15 repetitions.
• Standing external rotation with band: Elbow at your side, pull the band outward by rotating at the shoulder. 3 sets of 10–15 repetitions.
• Prone Y, T, W raises: Lying face down, raise the arms into Y (overhead), T (out to the side), and W (elbows bent, hands up) positions. 3 sets of 10 repetitions.

Scapular Stabilisation

• Wall slides: Stand with your back against a wall, arms in a "goal post" position. Slowly slide arms up and down the wall while maintaining contact. 3 sets of 10 repetitions.
• Serratus anterior punch: Lying on your back, arm pointing toward the ceiling. Push the hand further toward the ceiling by protracting the scapula. 3 sets of 10–15 repetitions.
• Bent-over rows: With a dumbbell, pull the elbow back towards the ceiling while squeezing the shoulder blade inward. 3 sets of 10–12 repetitions.

Range of Motion

• Pendulum exercises: Lean forward with the unaffected arm on a table. Let the affected arm hang and gently swing in circles and back and forth. 1–2 minutes per direction.
• Assisted flexion with a stick: Use a broomstick or towel to guide the affected arm overhead using the unaffected arm. 3 sets of 10 repetitions.
• Sleeper stretch: Lying on the affected side, elbow bent to 90 degrees, gently push the forearm toward the floor to stretch the posterior shoulder capsule. Hold 30 seconds, repeat 3 times.

When to Seek Help

Consult a physiotherapist or medical professional if you experience:

• Shoulder pain that persists beyond two to three weeks without improvement
• Significant weakness or inability to lift the arm
• Pain following a fall, collision, or acute injury
• Night pain that disrupts sleep
• Shoulder instability (the shoulder feeling like it "slips out" or is "loose")
• Numbness, tingling, or pins and needles in the arm or hand
• A locked or completely immobile shoulder

Early intervention is associated with faster recovery and better outcomes for most shoulder conditions. Delaying treatment can allow pain to become entrenched, secondary stiffness to develop, and muscle inhibition patterns to take hold — all of which are more difficult to address once established.

For related conditions, see our guides on neck pain physiotherapy, sports physiotherapy in Australia, and dry needling.