Identification of Aberrant Muscle Bellies in the Carpal Tunnel Using Sonography

Details

• Personal Author:
  Roll SC ; Takata SC
• Description:
  Musculoskeletal sonography is being widely used for evaluation of structures within the carpal tunnel. While some anatomical variants, such as bifurcated median nerves and persistent median arteries, have been well documented, limited literature describes the sonographic appearance of aberrant muscle bellies within the carpal tunnel. Multiple examples of the sonographic appearance of flexor digitorum superficialis and lumbrical muscle bellies extending into the carpal tunnel are provided. Techniques for static image acquisition and analysis are discussed, and the use of dynamic imaging to confirm which specific muscle belly is involved is described. Knowledge of the potential presence of muscle bellies in these images and ability to identify these structures is vital to avoid misclassification or misdiagnosis as abnormal pathology. The case examples are situated among current published evidence regarding how such anomalies may be related to the development of pathologies, such as carpal tunnel syndrome. [Description provided by NIOSH]
• Subjects:
  Confined Spaces Mining Occupational Health Safety Vehicle Emissions
• Keywords:
  Aberrant Muscle Author Keywords: Carpal Tunnel Carpal Tunnel Syndrome Case Reports CTS Diagnostic Tests Imaging Techniques Medical Equipment Medical Examinations MSD Muscle Physiology Muscles Musculoskeletal Sonography Musculoskeletal System Musculoskeletal System Disorders Nerves Pathology Ultrasonics Ultrasonic Testing Ultrasound Visual Images

  More +
• ISSN:
  1552-5430
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  California ; OSHA Region 9
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  62-68
• Volume:
  35
• Issue:
  1
• NIOSHTIC Number:
  nn:20053950
• Citation:
  J Diagn Med Sonogr 2019 Jan/Feb; 35(1):62-68
• Contact Point Address:
  Shawn C. Roll, PhD, OTR/L, RMSKS, FAOTA, Chan Division of Occupational Science and Occupational Therapy, University of Southern California, 1540 Alcazar Street, CHP 133, Los Angeles, CA 90089-9003, USA
• Email:
  sroll@usc.edu
• Federal Fiscal Year:
  2019
• NORA Priority Area:
  Healthcare and Social Assistance
• Performing Organization:
  University of Southern California - Los Angeles
• Peer Reviewed:
  True
• Start Date:
  20150930
• Source Full Name:
  Journal of Diagnostic Medical Sonography
• End Date:
  20190929
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:24c53f733e7435fa5523854d3e567ac0e80bcad10016c75e4fbe9945592e19d40207585dabfb8658bdfade7c8373e52ae5468a89093a099273ad61b3dd705ca0
• Download URL:
  https://stacks.cdc.gov/view/cdc/216610/cdc_216610_DS1.pdf
• File Type:
  [PDF - 368.19 KB ]