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Minor shoulder instability.

Alessandro Castagna1, Ulf Nordenson, Raffaele Garofalo

  • 1Unità di Chirurgia della Spalla IRCCS Instituto Clinico Humanitas, Milan, Italy.

Arthroscopy : the Journal of Arthroscopic & Related Surgery : Official Publication of the Arthroscopy Association of North America and the International Arthroscopy Association
|February 6, 2007
PubMed
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Minor shoulder instability, often overlooked, involves glenohumeral joint dysfunction. Diagnosis relies on patient history and clinical exams, with arthroscopy revealing labral lesions, guiding treatment to restore stability.

Area of Science:

  • Orthopedic Surgery
  • Sports Medicine
  • Anatomy

Background:

  • Current shoulder instability classifications lack precision for diverse pathological findings.
  • Minor instability presents as glenohumeral joint dysfunction, often linked to microtrauma or inactivity.

Purpose of the Study:

  • To define and characterize "minor shoulder instability."
  • To highlight diagnostic challenges and the role of arthroscopy.

Main Methods:

  • Review of clinical presentation and diagnostic approaches for shoulder instability.
  • Emphasis on patient history, clinical examination (apprehension test), and arthroscopic assessment.
  • Correlation of clinical symptoms with arthroscopic findings.

Main Results:

Related Experiment Videos

  • Minor instability involves dysfunction of the glenohumeral articulation, particularly the anterior superior labrum and middle glenohumeral ligament (MGHL) complex.
  • Clinical diagnosis is challenging; conventional imaging is often negative.
  • Arthroscopy reveals pathological changes like hyperemia, fraying, or absence of the labral complex.

Conclusions:

  • Accurate diagnosis of minor shoulder instability requires correlating clinical findings with arthroscopic assessment.
  • Treatment aims to restore shoulder stability, though a temporary reduction in range of motion, especially external rotation, is expected post-surgery.