Shoulder

Adhesive Capsulitis (Frozen Shoulder)

Frozen shoulder, formally called adhesive capsulitis, is a painful, progressive stiffening of the shoulder joint that can sideline patients for months or even years. At Maryland Orthopedic Specialists, our team understands how debilitating this condition can be and offers a full range of treatments, from guided physical therapy and targeted injections to advanced procedures, to restore your motion and get you back to life without limitations. Same-day appointments are available at our Bethesda and Germantown locations.

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What is adhesive capsulitis (frozen shoulder)?

Adhesive capsulitis is characterized by diffuse inflammation and progressive fibrosis of the glenohumeral joint capsule, resulting in painful restriction of both active and passive shoulder motion. Normally, the condition is idiopathic, which means there is no known cause. It is a truly inflammatory disorder. The vast majority of cases are treated without surgery.

Adhesive capsulitis is characterized by diffuse inflammation and progressive fibrosis of the glenohumeral joint capsule, resulting in painful restriction of both active and passive shoulder motion. The joint capsule thickens, loses its normal redundant folds (especially the axillary recess), and adheres to the humeral head. This dramatically shrinks joint volume from a normal 15–20 mL to as little as 5–6 mL.

Idiopathic vs. Secondary Adhesive Capsulitis

Idiopathic (primary) adhesive capsulitis has no identifiable cause and predominantly affects women aged 40–60. Secondary adhesive capsulitis develops in the setting of systemic or local conditions:

Diabetes mellitus (most important risk factor; 10–20% of diabetic patients are affected; bilateral in up to 40%)
Thyroid disorders (both hypo- and hyperthyroidism)
Prior shoulder surgery or rotator cuff pathology
Prolonged immobilization

The Three Phases

Adhesive capsulitis evolves through three overlapping clinical phases:

Freezing phase (painful phase, 2–9 months): Progressive pain and stiffness onset; inflammation predominates; this phase responds best to corticosteroid injection.
Frozen phase (stiff phase, 4–12 months): Pain begins to plateau or improve, but stiffness peaks; function is maximally compromised; fibrosis is established.
Thawing phase (resolution phase, 5–24 months): Gradual, spontaneous return of motion; most patients recover, though the process can span 1–3 years.

Loss of External Rotation: The Most Sensitive Finding

Among all planes of motion, loss of passive external rotation is the most sensitive clinical finding distinguishing adhesive capsulitis from other causes of shoulder pain and stiffness. In a true frozen shoulder, external rotation, abduction, and internal rotation are all restricted in a capsular pattern. Cervical radiculopathy and subacromial pathology do not produce this uniform passive restriction.

Symptoms — do you recognize these?

Gradual onset of deep, aching shoulder pain — often worse at night
Progressive loss of shoulder motion in all directions
Difficulty with activities such as fastening a bra, reaching overhead, or putting on a coat
Pain sharp at the end ranges of motion even when motion becomes severely restricted
Bilateral involvement in 10–20% of cases (rarely simultaneous)

Call us at (301) 515-0900. Same-day appointments available at our Bethesda and Germantown locations.

How we diagnose it

Diagnosis is primarily by physical exam. The hallmark is loss of passive external rotation at the side, combined with restriction of abduction and internal rotation, in the absence of significant glenohumeral arthritis on imaging.

Workup:

X-rays: Usually normal; obtained to exclude glenohumeral OA, calcific tendinitis, or fracture. Disuse osteopenia may be present in chronic cases.
MRI (with or without arthrogram): Can demonstrate capsular thickening, loss of axillary recess volume, and hypervascularity; most useful when the diagnosis is uncertain or rotator cuff pathology is suspected.

Treatment options

Physical Therapy

Stretching and range-of-motion exercises are the foundation of conservative treatment. Programs emphasize pendulum exercises, passive stretching, and gradual active-assisted motion. PT is most effective in the thawing phase. During the frozen phase, aggressive stretching may increase inflammation.

Corticosteroid Injection (Most Effective in Freezing Phase)

Intra-articular or subacromial corticosteroid injections provide the most rapid and meaningful short-term improvement in the painful freezing phase, when inflammation is dominant. Multiple well-designed trials confirm superior early pain relief compared to PT alone, though long-term differences diminish. Ultrasound guidance improves accuracy of intra-articular placement.

Hydrodilatation (Distension Arthrography)

Hydrodilatation (injection of saline, with or without corticosteroid and local anesthetic, under pressure to distend and rupture the contracted capsule) is an effective minimally invasive option. It can accelerate motion recovery and is well tolerated in outpatient settings.

Manipulation Under Anesthesia (MUA)

For patients who fail 4–6 months of conservative care, manipulation under anesthesia breaks down capsular adhesions mechanically. It is effective and widely used but carries a small risk of humeral fracture, rotator cuff injury, or brachial plexus neurapraxia. These risks are minimized by experienced surgeons and controlled force.

Surgical Procedure

Shoulder Capsular Release (Frozen Shoulder)

Arthroscopic 360-degree release of the contracted shoulder joint capsule in patients with stage II or III adhesive capsulitis who have not responded to physical therapy, steroid injections, and manipulation under anesthesia.

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Shoulder Arthroscopy (Diagnostic & Operative)

Minimally invasive diagnostic and operative scope of the glenohumeral joint and subacromial space, used to evaluate and treat labral tears, rotator cuff pathology, AC joint arthritis, loose bodies, and synovitis.

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Recovery & rehabilitation

The natural history of adhesive capsulitis favors resolution in 1–3 years in most patients, though up to 15–20% retain some residual stiffness long-term. Diabetic patients have a more protracted course and a higher rate of incomplete recovery. Early treatment (particularly corticosteroid injection during the freezing phase) can substantially shorten the overall illness duration. With treatment, the majority of patients recover in 2-3 months.

Frequently Asked Questions

Will my frozen shoulder go away without treatment?

Most cases do eventually resolve spontaneously, but this can take 1–3 years. Treatment accelerates recovery, reduces pain, and prevents prolonged functional loss.

I have diabetes. Am I at higher risk?

Yes. Diabetes significantly increases both the likelihood of developing frozen shoulder and the likelihood of incomplete recovery. Tight glycemic control appears to reduce risk and improve prognosis.

What is the fastest way to treat a frozen shoulder?

Evidence supports early corticosteroid injection (during the freezing/painful phase) combined with supervised physical therapy as the most effective strategy for rapid early improvement.

Does physical therapy hurt?

Gentle PT should not significantly worsen pain. Aggressive passive stretching beyond comfortable end ranges can exacerbate inflammation. Our therapists tailor intensity to the phase of your condition.

How long does frozen shoulder last, and will I fully recover?

Frozen shoulder classically progresses through three phases: a freezing phase (pain-dominant, lasting 2–9 months), a frozen phase (stiffness-dominant, 4–12 months), and a thawing phase (gradual motion recovery, 5–24 months). The total natural history can span 1–3 years without intervention. With appropriate treatment (including physical therapy, corticosteroid injections, and when necessary, a manipulation under anesthesia or arthroscopic capsular release), most patients recover full or near-full motion significantly faster. At MOS, our goal is to shorten the duration of each phase and get you moving comfortably as quickly as possible.