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Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography
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SHART: shoulder hyperabduction radiological test.

Franck Jouve1, Charles Schlur, Shahnaz Klouche

  • 1Orthopaedic Surgery Department, Ambroise Paré Hospital, 9 avenue Charles-de-Gaulle, 92100, Boulogne-Billancourt, France.

Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA
|February 23, 2011
PubMed
Summary
This summary is machine-generated.

The Shoulder Hyperabduction Radiological Test (SHART) effectively quantifies inferior glenohumeral ligament (IGHL) laxity in shoulder instability. A difference over 15° on SHART radiographs correlates with significant IGHL distension, aiding diagnosis.

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Area of Science:

  • Orthopedic Surgery
  • Radiology
  • Sports Medicine

Background:

  • Anterior shoulder instability is a common orthopedic condition.
  • Accurate assessment of inferior glenohumeral ligament (IGHL) laxity is crucial for effective treatment.
  • Current diagnostic methods may not fully capture the extent of IGHL involvement.

Purpose of the Study:

  • To evaluate and quantify IGHL laxity in post-traumatic anterior shoulder instability.
  • To correlate findings from the Shoulder Hyperabduction Radiological Test (SHART) with arthroscopic assessments.
  • To determine the diagnostic utility of the SHART in identifying significant IGHL distension.

Main Methods:

  • Prospective study of 21 patients undergoing arthroscopic stabilization for anteroinferior shoulder instability.
  • The SHART involved bilateral AP radiographs in passive maximum abduction and neutral rotation.
  • Measurement of the angle between the humeral shaft axis and glenoid fossa landmarks; correlation with arthroscopic Detrisac IGHL distension staging (extensive: stages 3-4).

Main Results:

  • A statistically significant correlation (P = 0.02) was found between the SHART and Detrisac staging.
  • A radiographic difference exceeding 15° between the affected and contralateral shoulder on SHART demonstrated 87% accuracy for extensive IGHL distension (Detrisac stages 3-4).

Conclusions:

  • The SHART is a valuable tool for quantifying IGHL laxity in anterior shoulder instability.
  • The study suggests incorporating the SHART into routine preoperative imaging protocols.
  • This radiological test aids in the accurate diagnosis and surgical planning for shoulder instability.