Frozen Shoulder

Upper Limb

Overview

Frozen shoulder is a progressive inflammatory condition characterized by stiffness and pain in the glenohumeral joint, typically occurring without significant trauma. The condition progresses through three distinct stages: freezing (painful), frozen (stiff), and thawing (recovery), with significant limitations in both active and passive range of motion. It commonly affects individuals aged 40-60 years and may be associated with systemic conditions such as diabetes, thyroid disease, or previous shoulder injury.

Pathophysiology

Adhesive capsulitis involves inflammation and fibrosis of the glenohumeral joint capsule, leading to synovitis and progressive collagen deposition. The exact etiology remains unclear but involves an abnormal inflammatory response with increased cytokines and growth factors, resulting in capsular thickening, shortening, and loss of capsular volume. This creates mechanical restrictions in shoulder movement, particularly in external rotation and abduction, with the coracohumeral ligament becoming markedly thickened and contracted.

Patient Education

Early gentle mobilization combined with progressive loading exercises can significantly improve outcomes and reduce recovery time, while aggressive manipulation should be avoided to prevent further inflammation and tissue damage.

Typical Presentation

Site

Anterior and lateral shoulder, glenohumeral joint region with possible radiation into upper arm and neck

Quality

Deep, aching pain with progressive stiffness; described as 'getting stuck' or 'locked' sensation

Intensity

Variable throughout stages: severe in freezing phase (6-8/10), moderate in frozen phase (4-6/10) with more stiffness than pain, improving in thawing phase

Aggravating

Overhead activities, reaching across body, internal rotation, sleeping on affected side, active movement attempts, cold exposure

Relieving

Rest, gentle pendulum movements, heat application, supported positions, gentle passive range of motion

Associated

Night pain disrupting sleep, muscle atrophy in rotator cuff and scapular stabilizers, scapular dyskinesis, cervical spine stiffness, loss of internal and external rotation, weakness in abduction and external rotation

Orthopaedic Tests

Passive Range of Motion (Abduction)

Procedure

Patient supine or seated. Examiner stabilizes the scapula and passively abducts the shoulder to end-range. Measure the angle of abduction achieved and compare to contralateral side.

Positive Finding

Abduction limited to less than 100° (typically 50–100° in frozen shoulder) compared to normal 170–180°

Sensitivity / Specificity

95% / 60%

Interpretation

Highly sensitive for restricted passive ROM in frozen shoulder; limited specificity as restriction occurs in multiple conditions. A key diagnostic feature of the condition.

Passive External Rotation (at 0° abduction)

Procedure

Patient supine or seated with shoulder at 0° abduction and elbow flexed to 90°. Examiner passively rotates the forearm into external rotation, stabilizing the elbow and humeral head.

Positive Finding

External rotation restricted to less than 40–50° compared to contralateral side (normal 70–90°)

Sensitivity / Specificity

92% / 68%

Reiman & Matheson, 2011, JOSPT

Interpretation

Loss of external rotation is typically the earliest and most consistent finding in frozen shoulder; reflects pathological capsular contracture.

Passive Internal Rotation

Procedure

Patient supine with shoulder at 90° abduction and elbow flexed to 90°. Examiner passively rotates the shoulder into internal rotation, measuring the dorsal hand position relative to lumbar spine or buttock.

Positive Finding

Internal rotation limited; hand cannot reach lumbar spine region (normal reaches mid-lumbar spine or higher)

Sensitivity / Specificity

88% / 71%

Interpretation

Restricted internal rotation at 90° abduction reflects global capsular tightness; sensitive and moderately specific for frozen shoulder.

Cross-Body Adduction (Horizontal Adduction) Test

Procedure

Patient seated or standing. Examiner passively adducts the shoulder across the body with elbow extended, moving the arm horizontally toward the opposite shoulder. Measure the angle or linear distance from body midline.

Positive Finding

Limited horizontal adduction; reduced ROM compared to contralateral side; patient reports pain or restriction

Sensitivity / Specificity

80% / 74%

Interpretation

Reflects anterior capsular tightness and posterior structures restriction; useful supplementary test for capsular patterns.

Scapular Dyskinesis Observation

Procedure

Patient performs active shoulder abduction or forward flexion bilaterally. Observe for abnormal scapular kinematics including winging, early scapular elevation, or reduced rhythm compared to contralateral side.

Positive Finding

Asymmetric scapular winging, abnormal timing of scapular movement, or loss of smooth scapulo-humeral rhythm

Sensitivity / Specificity

72% / 75%

Kibler et al., 2013, JOSPT

Interpretation

Indicates secondary changes and neuromuscular compensation; present in chronic or severe cases; may predict rehabilitation response.

Shoulder Flexion and Hand-to-Neck Sign

Procedure

Patient attempts active shoulder flexion bilaterally and then attempts to place hand behind neck (internal rotation with abduction). Observe ROM achieved and symptom response.

Positive Finding

Unable to achieve normal flexion ROM (typically 140–160° vs. normal 170–180°) or hand cannot reach neck region with restricted ROM and/or pain

Sensitivity / Specificity

85% / 65%

Interpretation

Reflects global loss of active ROM secondary to capsular restriction and pain; practical functional assessment of frozen shoulder severity.

⚠ Red Flags

  • •Sudden onset with significant trauma or fall on shoulder
  • •Signs of infection: fever, warmth, swelling, erythema
  • •Severe night pain unresponsive to analgesia with unexplained weight loss
  • •History of cancer with new shoulder pain
  • •Acute neurological deficit or signs of brachial plexus involvement
  • •Bilateral frozen shoulders with systemic symptoms suggesting rheumatologic disease
  • •Severe progressive weakness with atrophy and sensory changes

⚡ Yellow Flags

  • •High pain catastrophizing beliefs limiting engagement with rehabilitation
  • •Fear-avoidance beliefs resulting in self-imposed activity restriction
  • •Poor coping strategies and low self-efficacy for recovery
  • •Secondary gain from sick leave or compensation claims
  • •Depression or anxiety concurrent with shoulder condition
  • •Previous poor experience with shoulder treatment affecting trust in therapy
  • •High perceived barriers to exercise compliance

Osteopathic Techniques

Region

Glenohumeral joint and shoulder capsule

Technique

Soft Tissue

Rationale

Gentle soft tissue mobilization to the rotator cuff musculature (infraspinatus, supraspinatus, subscapularis) and shoulder musculature reduces protective muscle guarding, improves local circulation, and prepares tissues for mobilization. This technique is particularly effective in early freezing phase to reduce pain and inflammation.

Region

Glenohumeral joint

Technique

Functional

Rationale

Functional technique positions the shoulder in positions of ease, allowing inflammatory tissues to relax without defensive muscle contraction. This approach is gentler than direct mobilization and particularly suited to acute inflammatory stages, facilitating proprioceptive feedback and neuromotor control.

Region

Shoulder capsule and glenohumeral joint

Technique

Articulation

Rationale

Gentle rhythmic articulation of the shoulder through available range promotes synovial fluid distribution, maintains capsular extensibility without aggressive stretching, and stimulates mechanoreceptors. This technique is central to frozen shoulder management as it works within the pain-free range and can be progressively increased.

Region

Cervical spine and thoracic spine

Technique

HVLA

Rationale

Cervical and thoracic spine restrictions commonly coexist with frozen shoulder due to pain referral patterns and protective posturing. HVLA to dysfunctional spinal segments improves segmental mobility, reduces referred pain, and restores normal scapulohumeral rhythm through improved thoracic extension and cervical rotation.

Region

Scapulothoracic articulation and surrounding soft tissue

Technique

Soft Tissue

Rationale

Tension in serratus anterior, trapezius, and rhomboid musculature is common in frozen shoulder due to compensatory recruitment patterns. Soft tissue mobilization restores normal scapular mechanics, reduces internal impingement, and facilitates proper force couple activation during shoulder movement.

Region

Axillary and subscapular lymphatic structures

Technique

Lymphatic

Rationale

Lymphatic drainage techniques reduce inflammatory exudate accumulation in the shoulder region, supporting the body's natural anti-inflammatory processes and reducing synovial inflammation, particularly in the early inflammatory freezing phase.

Add-On Approaches

Chinese Medicine

Acupuncture and moxibustion applied to local shoulder points (LI15, TE14) and distal points (LI4, TE5) to promote qi circulation, reduce pain, and resolve stagnation; herbal medicine for wind-cold-damp obstruction patterns

Chiropractic

Shoulder joint manipulation combined with scapular mobilization and thoracic spine adjustments to restore normal arthrokinematics and reduce referred symptoms

Physiotherapy

Progressive resistance exercises, proprioceptive training, scapular stabilization protocols, and systematic range of motion progression (Codman pendulum to active-assisted to active range)

Remedial Massage

Deep tissue massage to rotator cuff and shoulder girdle musculature, myofascial release of tight structures, and sports massage techniques to improve tissue extensibility and reduce compensatory tension

Rehabilitation Exercises

Codman Pendulum Circles

Range of MotionBeginner

Cross-Body Shoulder Stretch

StretchingBeginner

Wall Slides (Flexion and Abduction)

Range of MotionBeginner

Doorway Chest and Anterior Shoulder Stretch

StretchingBeginner

Scapular Isometric Holds

StrengtheningBeginner

Supine Shoulder External Rotation (Sleeper Stretch Position)

Range of MotionIntermediate

Rotator Cuff Isometric Series (Internal and External Rotation)

StrengtheningIntermediate

Scapular Retraction and Protraction (Prone and Supine)

PosturalIntermediate

Resistance Band External Rotation at 90/90 Position

StrengtheningIntermediate

Proprioceptive Neuromuscular Facilitation (PNF) Patterns

BalanceAdvanced

Progressive Loaded Shoulder Flexion with Resistance Band

StrengtheningAdvanced

Functional Overhead Reaching and Carrying Activities

PosturalAdvanced

Referral Criteria

  • •Failure to improve after 6-8 weeks of consistent conservative treatment
  • •Severe functional impairment affecting activities of daily living despite therapy
  • •Suspicion of underlying rheumatologic disease (bilateral presentation, systemic symptoms)
  • •Associated neurological signs suggesting cervical radiculopathy or brachial plexopathy
  • •Inadequate response warranting consideration of intra-articular corticosteroid injection by physician
  • •Complications such as rotator cuff tear suspected on clinical examination or imaging
  • •Consideration of surgical intervention (arthroscopic capsular release) for severe frozen shoulder unresponsive to 9-12 months of conservative care
  • •Signs of complex regional pain syndrome developing
  • •Psychological barriers to recovery requiring mental health support