Related Experiment Video

Updated: May 29, 2026

Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography
06:09

Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography

Published on: March 12, 2021

Prevalence of shoulder enchondromas on routine MR imaging

Edmund D Hong1, John A Carrino, Kristy L Weber

  • 1School of Medicine, Johns Hopkins University, Baltimore, MD 21287, USA. ehong@jhmi.edu

Clinical Imaging
|August 30, 2011
PubMed

Insights

Incidental shoulder enchondromas are found in 2.1% of routine shoulder MR imaging. This finding is crucial for diagnosing proximal humerus lesions, especially those near the physeal plate.

Area of Science:

  • Orthopedic imaging
  • Radiology
  • Bone pathology

Background:

  • Enchondromas are benign cartilage tumors.
  • Incidental findings on medical imaging require characterization.
  • Shoulder MRIs are commonly performed for internal derangements.

Purpose of the Study:

  • To determine the prevalence of incidental enchondromas on shoulder MR imaging.
  • To understand the frequency of these benign tumors in asymptomatic patients.

Main Methods:

  • Retrospective review of 477 consecutive shoulder MR examinations.
  • Analysis for the presence of enchondromas, particularly in the proximal humerus.
  • Correlation with the physeal plate location.

Main Results:

  • Incidental enchondromas were identified in 2.1% of shoulder MRIs.
  • Most detected enchondromas were located adjacent to the physeal plate.
  • This highlights a common incidental finding in routine shoulder imaging.

Conclusions:

  • The prevalence of incidental shoulder enchondromas is 2.1%.
  • Awareness of this prevalence aids in differentiating benign findings from pathologic lesions.
  • Enchondromas abutting the physeal plate are common incidental discoveries on shoulder MRIs.

Related Concept Videos

Muscles of the Shoulder01:23

Muscles of the Shoulder

The muscles surrounding the shoulder girdle, including the clavicle and scapula, primarily stabilize the scapula. This stable base allows other muscles to move the humerus effectively. Scapular movements often mirror those of the humerus and extend its range of motion. For instance, raising the arm above the head would not be feasible without simultaneous upward rotation of the scapula.
Anterior Thoracic Muscles
The anterior thoracic muscles include the serratus anterior, subclavius, and...
Mitral Regurgitation II: Clinical Features and Diagnostic Tests01:23

Mitral Regurgitation II: Clinical Features and Diagnostic Tests

Mitral regurgitation (MR) is a valvular heart disorder in which the mitral valve fails to close tightly, allowing blood to leak backward into the heart. Understanding the clinical manifestations, assessment, diagnostic findings, and medical management of MR is crucial to effectively managing affected patients.Clinical Manifestations of Mitral RegurgitationMitral regurgitation can be acute or chronic, each presenting differently and requiring different approaches:1. Acute Mitral...