Fact-sheet: Destructive shoulder arthropathy - Milwaukee shoulder
  • Milwaukee shoulder


Updated on 03/26/2020 at 10:17 AM

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Definition

Destructive shoulder arthropathy - Milwaukee shoulder characterized by the presence of hydroxyapatite crystals (intra-articular calcium phosphate).

Predominant in women and elderly patients (50 to 90 years)

Clinical features

Chronic shoulder pain, worsening over a period of less than one year.
Bilateral involvement in 65% of cases.

Laboratory findings

Possible hyperparathyroidism

Radiography

Superior migration of the humeral head.
Glenohumeral joint space narrowing.
Subchondral sclerosis.
Osteophytosis (mild).

Bone fragmentation and impaction of the articular surfaces.

MRI

Subacromial-subdeltoid bursitis.
Intra-articular effusion

Management

- Joint maintenance physical therapy
- Injection during painful flare-ups
- Joint replacement

Differential diagnosis

Arthropathy secondary to a rotator cuff tear.