Inflammation and fibrosis of the joint capsule leading to contracture of the shoulder joint
Characterized by functional loss of passive and active shoulder motion with no clear underlying cause
The glenohumeral joint becomes painful and stiff because of the loss of resilience of the joint capsule, possibly with adhesions between its folds
Often, there is a history of preceding trauma
More common among women, aged 40-60 years and in diabetic patients
Types
Often insidious onset of general shoulder pain preceding any noticeable loss of motion
Severe restriction of both active and passive range of movements
Dull shoulder pain
Variable character and severity of pain, loss of motion dependent on the stage of disease at presentation
Stages
Freezing or painful stage – minimal synovitis with pain, causing a limitation of motion
Frozen or transitional stage - pain decreases but proliferative synovitis with contraction of the capsule and adhesion of the axillary recess continues
Thawing stage – Inflammation decreases, movement slowly improves
This is a self-limiting disease lasting for 6-9 months, after which in most cases, the inflammation subsides, leaving a stiff but painless shoulder
Investigation
Physical examination
Inspection-- note any muscle atrophy or scars denoting prior surgery
Range of movement
Symmetric loss of active and passive ROM
Document all motion planes and compare them to the contralateral side
Limitations in motion may be slight, external rotation deficit most common finding
A physical examination is usually enough to diagnose frozen shoulder
Investigations
X- ray: - Disuse osteopenia
Ultrasound
MRI to rule out other problems like arthritis or a torn rotator cuff that can also cause pain and limit range of motion
Blood investigations - to rule out associated conditions e.g. TSH, HbA1c, etc.
Treatments
Non-operative
Analgesics
Hot fomentation
Physiotherapy
Intra-articular injection of hydrocortisone may speed up the recovery
Stiffness can be prevented by continuous shoulder mobilizing exercises
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