Finger Flexor Motor Control Patterns During Active Flexion: An In Vivo Tendon Force Study

Details

• Personal Author:
  Diao E ; Kursa K ; Lattanza L ; Lehman S ; Nikanjam M ; Rempel D
• Description:
  An in vivo tendon force measurement system was used to evaluate index finger flexor motor control patterns during active finger flexion. During open carpal tunnel release surgery (N=12) the flexor digitorum profundus (FDP) and flexor digitorum superficilias (FDS) tendons were instrumented with buckle force transducers and participants performed finger flexion at two different wrist angles (0 degrees or 30 degrees ). During finger flexion, there was concurrent change of metacarpophalangeal (MCP) and proximal interphalangeal (PIP) joint angles, but the FDP and FDS tendon force changes were not concurrent. For the FDS tendon, no consistent changes in force were observed across participants at either wrist angle. For the FDP tendon, there were two force patterns. With the wrist in a neutral posture, the movement was initiated without force from the finger flexors, and further flexion (after the first 0.5s) was carried out with force from the FDP. With the wrist in a flexed posture, the motion was generally both initiated and continued using FDP force. At some wrist postures, finger flexion was initiated by passive forces which were replaced by FDP force to complete the motion. [Description provided by NIOSH]
• Subjects:
  Biomechanical Phenomena Cumulative Trauma Disorders Musculoskeletal Diseases Musculoskeletal System Occupational Health Safety
• Keywords:
  Biomechanics Cumulative-trauma-disorders Force Hand-injuries In-vivo-studies Injuries Musculoskeletal-system Musculoskeletal-system-disorders Physiology Posture
• ISSN:
  0167-9457
• 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:
  1-10
• Volume:
  26
• Issue:
  1
• NIOSHTIC Number:
  nn:20031799
• Citation:
  Hum Mov Sci 2007 Feb; 26(1):1-10
• Contact Point Address:
  Department of Medicine, University of California, San Francisco, 1301 South 46th Street, Building 163, Richmond, California 94804
• Federal Fiscal Year:
  2007
• NORA Priority Area:
  Disease and Injury: Musculoskeletal Disorders of the Upper Extremities
• Performing Organization:
  University of California, Richmond, California
• Peer Reviewed:
  True
• Start Date:
  19980701
• Source Full Name:
  Human Movement Science
• End Date:
  20030630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:62f1c7d9c2aca5fed3906d247a2625e7b6c9a3005b962898fe16fdb0b084b00b97a832733188e1c9c55213d0154b11456f05403239d6a649d0cc93c09129684f
• Download URL:
  https://stacks.cdc.gov/view/cdc/185955/cdc_185955_DS1.pdf
• File Type:
  [PDF - 343.17 KB ]