Tendon Microtears in an Animal Model of Epicondylitis Caused by Cyclical Loading

Details

• Personal Author:
  Barr A ; Nakama LH ; Rempel DM
• Description:
  Epicondylitis is a tendon disorder that can occur among athletes and workers who performing repetitive and forceful hand motions. Although it is associated with a high level of disability, the mechanisms of injury are not completely understood. It is commonly assumed that microtears are the initiating event of tendon injury, and microtears have been observed in tendon biopsies and sonograms from patients with overuse injuries. However, the size and distribution of microtears, and their relationship to loading are not well characterized. Knowledge of these factors may be useful in developing primary and secondary preventive measures. Our laboratory has developed an in vivo rabbit model of epicondylits that involves repetitive loading of the flexor digitorum profundus (FDP) muscle. The purpose of this study was to determine whether the size and density of microtears in the FDP tendon were different in a limb exposed to repetitive finger loading in comparison to a control limb. [Description provided by NIOSH]
• Subjects:
  Animals Biomechanical Phenomena Cumulative Trauma Disorders Laboratories Musculoskeletal Diseases Musculoskeletal System Occupational Health Safety
• Keywords:
  Animal-studies Biomechanics Cumulative-trauma Cumulative-trauma-disorders In-vivo-studies Injuries Laboratory-animals Models Muscles Musculoskeletal-system Musculoskeletal-system-disorders Repetitive-work

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• ISSN:
  0149-6433
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Abstract or Summary ; Proceedings
• Place as Subject:
  California ; OSHA Region 9
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  50
• NIOSHTIC Number:
  nn:20033288
• Citation:
  Trans Annu Meet Orthop Res Soc 2004 Mar; 50:0856
• Contact Point Address:
  University of California, 1301 South 46th Street. Building 163, Richmond, CA 94804
• Federal Fiscal Year:
  2004
• NORA Priority Area:
  Disease and Injury: Musculoskeletal Disorders of the Upper Extremities
• Performing Organization:
  University of California - San Francisco
• Peer Reviewed:
  False
• Start Date:
  20010701
• Source Full Name:
  Transactions of the Annual Meeting of the Orthopaedic Research Society
• End Date:
  20060630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:f549bad3926d4afb5ac0c30592d3800cbe722c9cdc8966aa4e510823bad18928c82331b046d48451afcafcbbf1460378f7ebd2436e95dd6b91412b092518b720
• Download URL:
  https://stacks.cdc.gov/view/cdc/188930/cdc_188930_DS1.pdf
• File Type:
  [PDF - 38.42 KB ]