Treatment of Frozen Shoulder using LLLT/PBMT
Low Level Laser Therapy (LLLT), also known as Photobiomodulation Therapy (PBMT), uses red and near-infrared light applied over targeted areas. In our clinic it is used as part of a GP-led treatment approach for selected musculoskeletal pain and injury presentations, including frozen shoulder. PBMT/LLLT is non-invasive and generally well tolerated. Suitability and response vary, and treatment recommendations depend on the diagnosis, severity, duration of symptoms and individual clinical factors. PBMT/LLLT has been studied for a range of musculoskeletal pain and injury conditions. See our references page for supporting literature.
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Key Points
- Frozen shoulder (adhesive capsulitis) is a painful and restrictive condition caused by inflammation and thickening of the joint capsule, often occurring spontaneously or in association with autoimmune or metabolic conditions.
- It typically progresses through three phases – freezing, frozen, and thawing – and can take 12 to 24 months to resolve without intervention.
- Common symptoms include persistent shoulder pain, stiffness, loss of range of motion, and difficulty with daily activities such as dressing, reaching, or lying on the affected side.
- The cause is often unknown, but it is more common in adults over 40, and in those with thyroid disease, diabetes, or a history of shoulder injury or immobility.
- Low Level Laser Therapy (LLLT), or Photobiomodulation Therapy (PBMT), is considered for selected frozen shoulder presentations where pain, inflammation and reduced movement are contributing to symptoms.
- LLLT may help modulate inflammation, support local circulation and support tissue repair processes without adding mechanical stress to the shoulder joint.
- Movement recovery in frozen shoulder can be unpredictable, but some patients experience improved comfort and function during the LLLT treatment course.
- LLLT may be particularly relevant for people unable to tolerate stretching or loading, or where cortisone injections, medication or physiotherapy have provided only temporary or partial relief.
- Treatment is GP-led by Dr Shikha Parmar and delivered in a structured, six-week program under medical supervision.
What is Frozen Shoulder?
Frozen shoulder, or adhesive capsulitis, is a painful and progressive condition characterised by stiffness, inflammation, and significant restriction of movement in the shoulder joint. It occurs when the connective tissue surrounding the shoulder capsule becomes inflamed and thickened, leading to stiffness and adhesions that limit mobility.
This condition can severely impact day-to-day activities such as dressing, grooming, driving, or sleeping comfortably. Frozen shoulder typically progresses through three stages:
- Freezing stage – increasing pain and stiffness; range of motion gradually decreases.
- Frozen stage – pain may ease but shoulder stiffness worsens; daily activities are significantly limited.
- Thawing stage – gradual return of movement as inflammation subsides and tissues begin to heal.
Frozen shoulder can take 12-24 months to resolve naturally, and in some cases, movement restriction may persist.
Causes of Frozen Shoulder
In many cases, the exact cause of frozen shoulder is unknown, which is why it is often referred to as idiopathic adhesive capsulitis. However, several risk factors and medical conditions are commonly associated with its development:
- Chronic systemic inflammation or autoimmune conditions, such as:
- Thyroid disease (particularly hypothyroidism and autoimmune thyroiditis)
- Type 1 diabetes mellitus – significantly increases risk
- Rheumatoid arthritis
- Dupuytren’s contracture
- Post-surgical or post-injury immobility – following shoulder surgery, rotator cuff tears, or arm fractures
- Previous shoulder trauma or overuse
- Prolonged immobilisation (e.g. after stroke, surgery, or prolonged illness)
- Middle age (40–60 years old) – frozen shoulder is more common in this age group
- Female sex – women are more frequently affected than men
In some cases, frozen shoulder can arise spontaneously with no obvious trigger.
Symptoms of Frozen Shoulder
Frozen shoulder typically affects one shoulder at a time, although in rare cases, both shoulders may be affected (either simultaneously or sequentially). The hallmark symptoms include:
- Progressive pain and stiffness in the shoulder joint
- Reduced range of motion – especially in movements such as external rotation, abduction, and reaching behind the back
- Pain that worsens at night or when lying on the affected side
- Dull, aching pain felt in the outer shoulder and sometimes upper arm
- Muscle weakness due to disuse or guarding
- Functional limitations – difficulty with dressing, personal care, reaching, and lifting
Symptoms typically evolve over several months, progressing through freezing, frozen, and thawing phases unless managed appropriately.
How is Frozen Shoulder Diagnosed?
Diagnosis of frozen shoulder is primarily clinical and based on a thorough history and physical examination. At Laser Pain Therapy, Dr Shikha Parmar will conduct a detailed consultation to assess:
- Onset, nature, and progression of pain and stiffness
- Functional limitations or activities exacerbating symptoms
- Medical history including diabetes, thyroid issues, autoimmune diseases, or recent shoulder injuries
During the examination, key diagnostic features may include:
- Restricted active and passive range of motion, especially external rotation
- Pain with movement or stretching of the joint capsule
- Absence of other obvious mechanical causes (e.g. tendon tears, arthritis)
If further confirmation is needed or to exclude other conditions, imaging may be requested:
- X-ray – to rule out arthritis, fractures, or bone abnormalities
- Ultrasound – to assess rotator cuff integrity and exclude bursitis or tendinopathy
- MRI – may be used in complex cases to visualise capsular thickening or adhesive changes
Early diagnosis can help guide appropriate management and reduce the risk of prolonged disability.
Frozen Shoulder – Treatment Overview
Low Level Laser Therapy (LLLT), also known as Photobiomodulation Therapy (PBMT), is a non-invasive treatment approach used as part of a structured program for selected frozen shoulder presentations. It may help modulate pain and local inflammatory processes without adding mechanical stress to an already painful and restricted shoulder.
Why Consider Low Level Laser Therapy (LLLT)?
Many patients present after limited relief from medications, cortisone injections, stretching, or physiotherapy. These approaches may provide temporary symptom relief for some people, but are not suitable or effective for everyone. Early or aggressive stretching may aggravate symptoms.
Why ice, anti-inflammatories, cortisone, and injections may not support long-term recovery. Read more here.
How LLLT Supports Healing
LLLT uses red and near-infrared light and may support tissue recovery processes by:
- Supporting local circulation and oxygen delivery
- Supporting lymphatic drainage
- Helping modulate inflammation and oxidative stress
- Supporting cellular energy production (ATP)
- Supporting repair processes in inflamed capsular and soft tissues
All without loading or stressing the shoulder joint.
Non-Invasive and Supported by Research
PBMT/LLLT is non-invasive and generally well tolerated. It has been studied for a range of musculoskeletal pain and injury conditions. Read more here.
See how LLLT helps restore the cellular environment needed for repair here.
Our Treatment Program
All patients are assessed by Dr Shikha Parmar (GP). Treatment is delivered within a structured six-week program, including:
- Up to 12 LLLT sessions
- Early progress review after the first 6 treatments
- Individualised advice and activity modification
- Guided rehabilitation to support longer-term function
Progress is reviewed during the program. Many patients notice appreciable improvement after the first 6 treatments. If there has not been sufficient improvement by this review point, further treatment may not be recommended.
View the full treatment protocol and expected outcomes here.
Ready to Discuss Your Frozen Shoulder Treatment Options?
If you are struggling with persistent pain, stiffness or reduced shoulder mobility due to frozen shoulder, we invite you to contact our team at Laser Pain Therapy to discuss the suitability of LLLT for your presentation. Treatment suitability and outcomes vary, and assessment is required before recommendations can be made.
Contact us to arrange your consultation.
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