Musculoskeletal loading and carpal tunnel pressure.

Details

• Personal Author:
  Rempel D
• Description:
  The role of musculoskeletal loading and carpal tunnel pressure (CTP) in carpal tunnel syndrome (CTS) was reviewed. A summary of the characteristics of CTS, the role of CTP in disease, the associations between wrist posture and CTP, tendon loading and CTP, and repetitive hand movements and CTP were presented. CTS results from an entrapment of the median nerve within the carpal tunnel and the wrist. The carpal tunnel is tightly occupied by the median nerve and by nine tendons, each of which are enclosed in a gelatinous sheath. Prolonged increases in CTP due to repeated hand movements have been postulated to initiate a cascade of events that leads to nerve entrapment. CTS is also associated with other factors such as space occupying lesions or conditions associated with tissue swelling that increase the pressure inside the carpal tunnel. A number of laboratory animal and clinical studies have provided strong evidence for CTP having a role in CTS. Clinical and experimental studies have shown that performing tasks with the wrist in awkward positions increases CTP, therefore providing a pathophysiologic link with epidemiologic studies which found that working with the wrist in non neutral positions increases the risk of CTS. Repetitive hand and finger motions have been linked to increases in CTP and this relationship is strongly influenced by the mean wrist angle involved in these activities. [Description provided by NIOSH]
• Subjects:
  Biomechanical Phenomena Musculoskeletal Diseases Musculoskeletal System Occupational Health Risk Assessment Risk Factors Safety
• Keywords:
  NIOSH-Grant; Musculoskeletal-system-disorders; Carpal-tunnel-syndrome; Repetitive-work; Biomechanics; Physical-stress; Pathogenesis; Risk-factors
• Publisher:
  American Academy of Orthopaedic Surgeons
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Proceedings
• 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:
  123-132
• NIOSHTIC Number:
  nn:00241820
• Citation:
  Repetitive Motion Disorders of the Upper Extremity, Workshop, June 1994, Bethesda, MD 1994 Jun; :123-132
• Contact Point Address:
  Medicine University of Calif., S.f. Sfgh Bldg 30 5Th FL San Francisco, CA 94110
• Editor(s):
  Gordon SL; Blair SJ; Fine LJ
• Federal Fiscal Year:
  1994
• NORA Priority Area:
  Disease and Injury: Musculoskeletal Disorders of the Upper Extremities
• Performing Organization:
  University of California San Francisco, San Francisco, California
• Peer Reviewed:
  False
• Start Date:
  19920801
• Source Full Name:
  Repetitive Motion Disorders of the Upper Extremity, Workshop, June 1994, Bethesda, MD
• End Date:
  19950731
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:7dc847c09aedf140bc731323e8446b4703641ae07d6ad9e7b7238120dab30b8f7dcaa9b938d34d035f87873a0fe7fec262d5d13dcaf290925445e82b6de3b57d
• Download URL:
  https://stacks.cdc.gov/view/cdc/243656/cdc_243656_DS1.pdf
• File Type:
  [PDF - 168.02 KB ]