What is Frozen Shoulder?
Frozen shoulder (also known as adhesive capsulitis) is a condition characterised by progressive pain, stiffness, and loss of both active and passive range of motion (ROM) of the shoulder joint (glenohumeral joint). The Lighthouse+3BioMed Central+3JSTAGE+3
The capsule surrounding the joint becomes inflamed, thickened and scarred — restricting movement and causing pain. The Lighthouse+1
Who gets it and when?
Key risk factors and demographics include:
- Frozen Shoulder is more common in women, especially between ages ~40–65. The Lighthouse+1
- Conditions like diabetes, thyroid dysfunction, etc increase risk and often increase severity/duration. The Lighthouse+2MDPI+2
- Sometimes triggered after shoulder injury, immobilisation, or surgery, but often idiopathic (without obvious cause).
Stages & Natural Course
The classic description divides frozen shoulder into three phases:
- Freezing / pain phase – intense pain, increasing stiffness.
- Frozen phase – pain may ease somewhat, but stiffness and restricted movement dominate.
- Thawing / recovery phase – gradual improvement in movement, though may take many months. The Lighthouse+1
Many sources quote a typical duration of 18 months to 2 years, though this can vary widely. The Lighthouse+1
Why it matters
Beyond being painful and limiting, it affects daily functions — dressing, reaching behind the back, sleeping (especially side-lying), driving, and overhead tasks. The lived experience of frozen shoulder is significant. BioMed Central+1
Advanced Myotherapy’s Treatment Protocol
- They emphasise hands-on soft tissue work, joint mobilisation, exercise prescription, postural assessment, and patient education. advanced-myotherapy.com+1
- For conditions including “frozen shoulder” listed among treated disorders under broader myotherapy services. advanced-myotherapy.com+1
- Myotherapy can include dry-needling, myofascial release, correctives and mobilisation which may all support shoulder recovery when used appropriately.
What a myotherapist might do for frozen shoulder
- Assessment: checking posture, scapula/shoulder blade movement, gleno-humeral ROM, scapulohumeral rhythm (how the shoulder blade and upper arm move together).
- Soft tissue work: releasing tight muscle / fascial structures (eg. chest, shoulder blade, rotator cuff muscles) that may contribute to restricted movement or compensation.
- Joint mobilisation / manual therapy: gentle mobilisation of the glenohumeral joint and surrounding joints (e.g., scapulothoracic, acromioclavicular) to improve mobility and reduce stiffness.
- Corrective / active movement: prescribing patient-managed stretches and exercises to maintain gains and encourage movement during the thawing phase.
- Patient education & self-care: teaching posture, avoiding protective guarding behaviours, home stretches, sleep positioning, and gradual activity re-introduction.
- Referral/integration: Recognising when the condition is outside scope (e.g., may require orthopaedic input, injection, imaging) and liaising accordingly.
Myotherapy + Frozen Shoulder — Clinical Considerations
- Early “freezing” phase may primarily be inflammatory; at this stage aggressive stretching may aggravate pain — a myotherapist will likely focus on pain-modulation, maintaining safe movement rather than forcing full ROM.
- During “frozen” and “thawing” phases, manual therapy and mobilisation are more applicable.
- Because recent evidence indicates shifted thinking (see next section), a myotherapist’s role in building controlled mobility and promoting functional recovery is valuable.
Latest Research Insights (2023–2025)
Below are some of the more recent findings and shifts in understanding of frozen shoulder.
Emerging Pathophysiology Concepts
- A 2025 article proposed that frozen shoulder may be better conceptualised as a systemic immunometabolic disorder, linking factors such as estrogen, thyroid dysfunction, endothelial (blood vessel) health, lifestyle, and immunologic/inflammatory factors. MDPI
- Research shows that in the affected capsule, resolving macrophage populations (immune cells) interact with fibroblasts (cells that form scar tissue) to reduce inflammation and promote tissue remodelling during the recovery phase. OPNews
- These insights suggest frozen shoulder is not purely mechanical but involves immune-vascular-metabolic interplay.
Risk Factors & Prognosis
- A 2024 retrospective study of over 1,200 patients found gender (female) and diabetes as independent risk factors; also noted associations with poor sleep quality and constipation. BioMed Central
- For people with diabetes, the condition tends to last longer and be more severe. The Lighthouse+1
Treatment Evidence & Techniques
- A 2023 RCT found neuromuscular exercise (targeting muscle activation, control, scapular and rotator cuff strength) produced positive effects on pain and active ROM in idiopathic frozen shoulder. BioMed Central
- A 2024 systematic review/meta-analysis on early-stage frozen shoulder evaluated pharmacological interventions (injections, steroids, etc.) and found variable evidence; the network meta-analysis concluded that while many interventions exist, evidence is still limited for many specific comparisons. OUP Academic
- A 2024 systematic review on mobilisation and muscle-energy techniques concluded that these approaches trend toward benefit in ROM/pain/functional outcome, but evidence certainty remains low to very low. PubMed
- A 2024 study found that arthroscopic capsular release (surgical intervention) provided better pain relief than conservative treatment in patients unresponsive to other treatments. BioMed Central
- A 2025 trial protocol (the “FROSTBLOCK trial”) is investigating the effect of intra-articular corticosteroid injection with or without suprascapular nerve block in frozen shoulder. BioMed Central
- A 2023/2024 systematic review found hydrodilatation (joint capsule distension with fluid) improves shoulder disability and external rotation more than intra-articular steroid injection alone. PubMed
- Manual therapy comparisons: One 2025 RCT compared three manual therapy approaches (Maitland mobilisation, Mulligan Mobilisation With Movement (MWM), Myofascial Release) and found MWM had superior outcomes for pain and mobility. ijarmt.com
What These Findings Mean for Practice
- Early management: controlling inflammation, pain and maintaining gentle motion are key; heavy aggressive stretching may not always be appropriate early on.
- As mobility improves: therapies that focus on neuromuscular control (scapula, rotator cuff, shoulder-blade rhythm) are gaining support.
- Manual therapy and mobilisation remain important, but should be combined with active exercise and patient participation for better outcomes.
- For persistent cases (> 6–12 months) unresponsive to conservative care, surgical interventions or more advanced treatments may be warranted.
- The new pathophysiological insights encourage holistic management — addressing systemic factors (e.g., metabolic health, endocrine issues, lifestyle) in conjunction with local shoulder therapy.
Integrating Myotherapy & Evidence — A Practical Guide
- Initial phase (Pain dominant / Freezing)
- Focus on pain relief (e.g., gentle soft tissue work, modalities, relaxation).
- Encourage movement within pain-free/acceptable limits (e.g., pendulum swings, gentle scapular mobilisation).
- Avoid forcing ROM range aggressively, which may exacerbate inflammation.
- Middle phase (Stiffness dominating / Frozen)
- Begin more joint mobilisation, myofascial release, active-assist exercise.
- Prioritise restoring scapular rhythm & rotator cuff/shoulder stabilisers.
- Educate on posture, sleep positioning, shoulder blade control.
- Later phase (Thawing / Recovery)
- Focus on active strengthening, functional tasks, return to overhead/arms behind back.
- Monitor systemic factors (e.g., if diabetic, manage glycaemia; if thyroid issue present, liaise).
- Integrate mobility maintenance into daily routine to prevent recurrence.
- When to refer or escalate
- If minimal improvement at ~6–9 months despite good adherence.
- Signs of severe capsular contracture, diabetes-related complications, or secondary causes.
- Consider liaison with orthopaedics/physiatry for injections, hydrodilatation, surgery.
Key Take-aways
- Frozen shoulder is more than just “tight shoulder” — it involves complex inflammatory, fibrotic, and systemic factors.
- Myotherapy clinics such as Advanced Myotherapy can play a valuable role via manual therapy, mobilisations, exercise prescription and patient education.
- The evidence base is evolving: there is increasing support for neuromuscular/movement-based therapies, but many manual techniques show only modest evidence and should be combined with active rehab.
- Holistic management matters: addressing comorbidities (e.g., diabetes, thyroid) and lifestyle factors can support better outcomes.
- Patience is important — recovery may take months to years, and early pain control, gradual movement and consistent rehab matter more than aggressive pushing.
