Frozen shoulder - Wokingham, Berkshire

1. Overview

Frozen shoulder — medically known as adhesive capsulitis — is a painful and progressively restricting condition of the shoulder joint characterised by inflammation and fibrotic thickening of the glenohumeral joint capsule, causing the capsule to contract and adhere to the head of the humerus. The result is severe pain and a profound loss of both active and passive shoulder movement, affecting the ability to perform everyday tasks such as dressing, washing hair, reaching overhead and sleeping on the affected side.

Frozen shoulder affects 2–5% of the general adult population and is particularly common around the age of 50, earning it the older name “fifty-year shoulder”. Women have a 58% greater risk than men. The condition has a natural history of one to four years if left untreated, and many patients do not fully recover without active treatment. Acupuncture is one of the most effective evidence-based treatments for frozen shoulder, with clinical trials demonstrating significant pain reduction, restoration of shoulder function and improvement in range of motion compared to conventional treatments and physiotherapy alone.

2. Symptoms

Frozen shoulder produces a characteristic combination of pain and stiffness that evolves in distinct phases. The main symptoms are:

Severe shoulder pain — initially a constant, deep aching pain around the shoulder joint and upper arm, often with sharp pain at the end range of movement. The pain is typically worse at night, disrupting sleep and making it impossible to lie on the affected shoulder
Progressive loss of range of motion — both active movement (what the patient can do themselves) and passive movement (what an examiner can produce) are restricted, distinguishing frozen shoulder from rotator cuff pathology where passive movement is usually preserved
Restricted external rotation — the hallmark physical examination finding; inability to rotate the arm outward (e.g. reaching behind the back or putting on a coat) is typically the first and most severely restricted movement
Difficulty with daily activities — dressing, washing hair, reaching shelves, driving, fastening a bra strap and sleeping on the affected side are commonly affected
Muscle wasting — in longstanding cases, disuse of the shoulder leads to atrophy of the deltoid and rotator cuff muscles, which can slow recovery even after the capsular restriction resolves

3. The three phases of frozen shoulder

Frozen shoulder characteristically progresses through three well-recognised clinical phases, and the most appropriate treatment approach differs by phase:

Freezing phase (painful phase, 2–9 months) — marked by the gradual onset and progressive worsening of shoulder pain, which is often severe, constant and worst at night. Range of motion begins to decline during this phase. This is the most painful stage and the stage at which early acupuncture treatment is most valuable for controlling inflammation, reducing pain intensity and slowing the progression of capsular fibrosis
Frozen phase (stiff phase, 4–12 months) — pain may begin to plateau or slightly improve, but stiffness and loss of range of motion are at their most severe. The joint capsule is maximally contracted. This phase is dominated by functional restriction rather than pain. Acupuncture, cupping therapy and moxibustion in this phase focus on moving Qi and Blood stagnation, resolving fibrosis and gradually restoring movement
Thawing phase (recovery phase, 5–26 months) — spontaneous gradual recovery of range of motion as the capsular adhesions begin to resolve. Acupuncture in this phase supports and accelerates recovery, reduces residual muscle pain and tension and helps restore full function more quickly than the natural history of the condition would allow

4. Causes and risk factors

The precise cause of frozen shoulder is not fully understood, but the condition involves sterile inflammation and fibrosis of the glenohumeral joint capsule, particularly affecting the coracohumeral ligament and the rotator cuff interval. It is broadly classified into primary (idiopathic) and secondary forms:

Primary (idiopathic) frozen shoulder — occurs without an identifiable precipitating cause or injury. This is the most common form and may have an autoimmune component, as inflammatory fibroblast activation drives the capsular fibrosis
Diabetes mellitus — the strongest identified risk factor for frozen shoulder; diabetics have a 10–20% incidence (two to four times higher than the general population) and tend to have a more severe, prolonged and bilateral presentation that is less responsive to conventional treatment
Secondary frozen shoulder following injury or immobilisation — any condition that leads to prolonged reduction in shoulder movement, including rotator cuff tears, fractures of the humerus, post-surgical immobilisation, stroke or prolonged arm immobilisation from any cause, can trigger the inflammatory capsular response of frozen shoulder
Thyroid disorders — both hypothyroidism and hyperthyroidism are associated with an increased risk of frozen shoulder
Cardiovascular disease and stroke — frozen shoulder is more common after myocardial infarction and stroke, likely due to reduced arm movement during recovery
Poor posture and chronic tension — sustained forward head posture and chronic muscle tension in the neck and shoulder girdle can compress the shoulder joint and reduce the space available for normal glenohumeral movement, predisposing to capsular inflammation
Prolonged psychological stress — in TCM, chronic emotional stress impairs the Liver’s free flow of Qi through the shoulder channels, contributing to the development of stagnation and Bi syndrome in the shoulder region

5. Frozen shoulder in Chinese medicine

In traditional Chinese medicine (TCM), frozen shoulder is understood as a form of Bi (obstruction) syndrome localised to the shoulder — a blockage of Qi and Blood flow through the channels that traverse the shoulder joint. The Large Intestine, Triple Burner and Small Intestine channels all cross the shoulder, and obstruction in these channels produces the characteristic combination of pain and restricted movement. The specific TCM pattern determines which herbs, acupoints and adjunct therapies are most appropriate:

Wind-Cold-Damp Bi (Cold Bi) — the most common pattern, particularly in those whose frozen shoulder developed after exposure to cold, draughts or damp environments, or whose symptoms are characterised by severe stiffness worse in cold weather and relieved by warmth. The Cold and Damp pathogenic factors invade the shoulder channels, causing contraction and obstruction of Qi and Blood flow. Treatment disperses Cold and Damp, warms the channels and promotes circulation. Moxibustion and warm needling are particularly effective for this pattern
Qi and Blood stagnation — often arising after injury, surgery or prolonged immobilisation, where the initial trauma or disuse leads to stagnation of Qi and Blood in the shoulder channels. Produces a fixed, stabbing or aching pain that is worse at night, a stiff and restricted shoulder with a sensation of tightness, and possible numbness of the arm. This is also the dominant pattern in the frozen phase. Treatment moves Qi and Blood, breaks up stagnation and softens the contracted capsular tissue
Liver and Kidney deficiency with channel obstruction — more common in older patients, post-menopausal women and those with diabetes, where underlying deficiency of Kidney Jing and Liver Blood leaves the tendons, ligaments and joint capsule inadequately nourished and more vulnerable to fibrotic change. The deficiency pattern underlies the obstruction and must be addressed alongside moving stagnation for lasting improvement. Associated with gradual onset, bilateral tendency, general weakness and age-related tissue changes
Damp-Heat Bi — less common but seen in some diabetic patients and those with inflammatory arthropathy, where Heat and Damp generate inflammation in the shoulder joint capsule. Characterised by a hot, swollen and acutely painful shoulder, often during the freezing phase. Treatment clears Heat and Damp and reduces inflammation before moving to resolve stagnation

6. Acupuncture for frozen shoulder

Acupuncture is one of the most effective treatments available for frozen shoulder, working through multiple mechanisms: reducing capsular inflammation and inflammatory cytokine levels, releasing tension in the rotator cuff and surrounding musculature, improving local blood circulation to promote resolution of fibrous adhesions, modulating pain signals in the brain and spinal cord and restoring normal neuromuscular function in the shoulder girdle.

Treatment combines local shoulder points — particularly LI15 (Jian Yu) at the anterosuperior joint capsule and TB14 (Jian Liao) at the rotator cuff interval, the two most commonly used and evidence-supported acupoints for frozen shoulder — with distal points that powerfully open the shoulder channels. The most notable distal point is ST38 (Tiaokou) on the lower leg, which has an established specific action on the shoulder joint in TCM and has been the subject of its own systematic review. LU7 (Lieque), SI9, SI10, GB21 and Ashi (tender) points in the shoulder and surrounding musculature are used as appropriate to the individual presentation. With each acupuncture session, layers of muscular tension are released progressively, allowing greater range of motion and less pain.

Electroacupuncture is particularly effective in the frozen phase where stiffness and fibrosis predominate, delivering sustained stimulation that promotes the breakdown of adhesions and improves joint mobility. The electrical stimulation provides stronger anti-inflammatory and analgesic effects than manual acupuncture alone and is especially useful for patients who have not fully responded to manual needling.

Research evidence

A systematic review and meta-analysis by Ben-Arie et al. (2020), published in Evidence-Based Complementary and Alternative Medicine, included 13 clinical trials and found significant pain reduction on VAS scores, restoration of Constant-Murley Shoulder Outcome Score (shoulder function) and improvement in flexion range of motion in favour of acupuncture, with LI15 (Jian Yu) and TB14 (Jian Liao) confirmed as the most effective local acupoints. A 2024 systematic review and meta-analysis published in Pain Management Nursing, including 13 studies, found that combined acupuncture and physiotherapy produced significantly greater pain reduction (SMD = −0.891) and an improved clinical effective rate (OR = 3.693) compared to physiotherapy alone, with significant improvements in both active and passive range of motion. A meta-analysis of 19 RCTs involving 1,944 participants found positive results for acupuncture at the distal point ST38 (Tiaokou) for frozen shoulder, either alone or in combination with local shoulder points, with improved clinical effectiveness and Constant-Murley scores.

Watch the video below which explains how acupuncture relieves pain:

7. Cupping therapy for frozen shoulder

Cupping therapy is a highly effective adjunct to acupuncture for frozen shoulder, particularly in the freezing and frozen phases where muscular guarding, deep tension and restricted mobility are pronounced. The suction applied by cups over the shoulder, upper back and neck creates a powerful negative pressure that lifts and stretches soft tissue layers — releasing deep muscular adhesions, promoting fresh blood flow to the shoulder capsule and surrounding muscles, and reducing the chronic muscular contraction that limits joint movement.

Sliding cupping — in which cups are moved across the oiled skin of the shoulder, upper back and neck — is particularly useful for releasing widespread superficial and deep muscle tension in the trapezius, rhomboids, infraspinatus and teres minor. Stationary cups placed over the most restricted and tender areas of the shoulder provide sustained deep decompression of the joint capsule region. Cupping is combined with acupuncture in the same session for maximum effect, and the combination of suction and needling produces a deeper, faster release of shoulder restriction than either therapy alone.

8. Moxibustion for frozen shoulder

Moxibustion — the application of warming moxa (dried Artemisia herb) over acupuncture points — is the treatment of choice for frozen shoulder with a Cold-Damp or Cold Bi pattern. The warmth penetrates deeply into the joint capsule and surrounding tissue, dispersing Cold and Damp pathogenic factors, improving circulation, reducing pain and increasing the extensibility of the contracted capsular tissue. Moxa is applied directly to the local shoulder points (LI15, TB14, SI11, GB21) and, in the case of warm needle acupuncture, is burned on the handle of the inserted needle to combine the benefits of needling and warming simultaneously.

Heat therapy with an infrared TDP lamp directed at the shoulder provides sustained deep warming through the treatment session, complementing moxibustion and acupuncture by maintaining local warmth, improving circulation and reducing the painful muscle guarding that restricts shoulder movement. Patients with Cold pattern frozen shoulder frequently report immediate pain relief and increased ease of movement following combined moxibustion, heat therapy and acupuncture treatment.

9. Self-care

Self-care plays an important supporting role alongside acupuncture treatment for frozen shoulder. The key is maintaining gentle movement within the pain-free range without forcing the joint — overexertion during the freezing phase can worsen inflammation and pain:

Gentle range-of-motion exercises — pendulum exercises (letting the arm hang and gently swing in small circles under gravity) and wall-climbing exercises (walking the fingers up the wall to gradually extend the arm) performed daily within the comfortable range help to maintain what movement remains and support recovery. These should be done gently and within the pain-free range in the freezing phase, and more actively in the thawing phase
Heat application — applying a heat pad or warm compress to the shoulder for 15–20 minutes before exercises loosens the joint capsule and reduces pain enough to allow better movement. Heat is particularly effective for Cold pattern frozen shoulder. Avoid cold packs as these can worsen Cold-Damp patterns and increase stiffness
Sleep position — avoid lying directly on the affected shoulder. Sleeping on the back with the affected arm supported on a pillow, or lying on the unaffected side with the affected arm supported by a pillow in front of the body, significantly reduces nocturnal pain and sleep disruption
Posture awareness — sustained forward head posture and rounded shoulders increase the load on the rotator cuff and reduce the subacromial space. Consciously drawing the shoulder blades back and down and avoiding prolonged slouched sitting reduces the postural stress contributing to shoulder restriction
Avoid aggravating activities — in the freezing phase, activities that involve lifting the arm above the head, carrying heavy loads with the affected arm or sudden forced movements should be avoided to prevent worsening inflammation. Adapt work and daily activities to use the unaffected arm where possible
Manage associated conditions — if frozen shoulder is associated with diabetes or thyroid disease, actively managing the underlying condition reduces its impact on shoulder recovery. Blood glucose control in particular has a significant effect on the severity and duration of diabetic frozen shoulder

10. Treatment at my clinic

I treat frozen shoulder at my clinic in Wokingham, Berkshire, using a combination of acupuncture, electroacupuncture, cupping therapy, moxibustion and heat therapy tailored to the individual’s phase of frozen shoulder and TCM pattern. Treatment in the early freezing phase is particularly important as it is anti-inflammatory, can slow the progression of capsular fibrosis and significantly reduces the pain severity and duration of the condition.

Most patients notice progressive improvement in both pain and range of motion from the first few sessions, with each treatment peeling back layers of muscular tension and allowing greater shoulder movement. A typical course for frozen shoulder is eight to twelve weekly sessions, after which the frequency can often be reduced as recovery progresses. For an overview of all pain conditions treated and the full range of therapies available, visit the pain page. See the prices page for treatment costs.

11. Frequently asked questions

How quickly does acupuncture work for frozen shoulder?

Most patients notice meaningful pain relief within two to four sessions of acupuncture for frozen shoulder. Range-of-motion improvement tends to follow pain improvement, progressing gradually with each session as the layers of muscular tension and capsular restriction are progressively released. Early treatment during the freezing phase produces faster and more complete results than starting treatment in the fully frozen phase.

Is acupuncture better than physiotherapy for frozen shoulder?

Research shows that combining acupuncture with physiotherapy produces significantly better outcomes than physiotherapy alone — greater pain reduction (SMD = −0.891), improved clinical effectiveness (OR = 3.693) and better range-of-motion recovery. Acupuncture is most effective as a complement to rehabilitation exercises rather than a replacement for them. By reducing pain and releasing muscular guarding, acupuncture makes physiotherapy exercises more effective and easier to perform.

How many acupuncture sessions are needed for frozen shoulder?

A typical course for frozen shoulder is eight to twelve sessions, usually weekly in the early stages. The number of sessions required depends on the phase of the condition (freezing phase responds fastest), the severity of restriction, whether the cause is idiopathic or secondary (e.g. diabetic frozen shoulder typically requires a longer course) and how consistently self-care exercises and lifestyle measures are maintained between sessions.

Can acupuncture help with frozen shoulder related to diabetes?

Yes. Diabetic frozen shoulder tends to be more severe, more bilateral, more resistant to conventional treatment and longer-lasting than idiopathic frozen shoulder. Acupuncture is particularly valuable in this context because it directly addresses the underlying patterns of Qi and Blood deficiency, poor circulation and channel obstruction that characterise diabetic musculoskeletal presentations, in addition to providing direct anti-inflammatory and analgesic effects at the shoulder joint.

Should I have acupuncture in the early (freezing) or later (frozen) phase of frozen shoulder?

Both phases benefit from acupuncture, but starting treatment in the early freezing phase produces the best outcomes. In the freezing phase, acupuncture reduces inflammation, controls pain and can slow the progression of capsular fibrosis — potentially shortening the overall duration and severity of the condition. In the frozen phase, acupuncture combined with electroacupuncture and cupping therapy focuses on breaking up adhesions, restoring circulation and gradually improving range of motion.