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Shoulder impingement/instability overlap syndrome

R D Parker1, W H Seitz

  • 1Department of Orthopaedic Surgery, Cleveland Clinic Foundation, OH 44195, USA.

Journal of the Southern Orthopaedic Association
|October 10, 1997
PubMed
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Shoulder impingement symptoms may stem from underlying multidirectional instability. Treating the instability directly, through rehabilitation or surgery, effectively resolves impingement and pain, unlike solely addressing impingement itself.

Area of Science:

  • Orthopedics
  • Sports Medicine
  • Shoulder Biomechanics

Background:

  • Impingement syndrome is a prevalent shoulder condition.
  • Multidirectional instability, though less common, can manifest with impingement symptoms.
  • The 'impingement/instability overlap' syndrome describes patients with both conditions.

Purpose of the Study:

  • To retrospectively review 50 patients diagnosed with impingement/instability overlap syndrome.
  • To define diagnostic criteria for impingement/instability overlap based on history and physical examination.
  • To evaluate treatment outcomes for this specific patient group.

Main Methods:

  • Retrospective chart review of 50 consecutive patients.
  • Inclusion criteria based on specific historical and physical examination findings.

Related Experiment Videos

  • Analysis of treatment strategies and their impact on symptoms.

    • Main Results:

    • Treating the primary cause, instability, with rehabilitation and/or surgery alleviated secondary impingement and pain.
    • Subacromial decompression alone did not resolve primary instability and associated pain.
    • Younger patients (<35 years) with impingement symptoms should be evaluated for underlying instability.

    Conclusions:

    • Instability is often the primary etiology in patients presenting with shoulder impingement symptoms.
    • Treatment should target the underlying pathologic instability for effective symptom resolution.
    • Addressing instability through rehabilitation or surgery is crucial for managing impingement/instability overlap syndrome.