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Related Experiment Videos

Sequential advancing flexion retention attachment: a locking device for the wrist-driven flexor hinge splint

G Bacon, E Olszewski

    The American Journal of Occupational Therapy : Official Publication of the American Occupational Therapy Association
    |October 1, 1978
    PubMed
    Summary
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    The Sequential Advancing Flexion Retention Attachment (SAFRA) provides maintained hand prehension for cervical spinal cord-injured patients. This device enables functional grasp without requiring external power sources.

    Area of Science:

    • Rehabilitation Engineering
    • Assistive Technology
    • Biomedical Devices

    Background:

    • Cervical spinal cord injury often results in impaired wrist extensor function, limiting hand grasp.
    • Existing externally powered orthoses for grasp restoration can be costly and complex.
    • There is a need for passive, effective solutions to improve prehension in this patient population.

    Purpose of the Study:

    • To introduce the Sequential Advancing Flexion Retention Attachment (SAFRA).
    • To evaluate the SAFRA's efficacy in restoring hand prehension for individuals with cervical spinal cord injury.
    • To demonstrate the advantages of a non-powered assistive device for grasp maintenance.

    Main Methods:

    • Development of the SAFRA, a novel attachment for standard wrist-driven flexor hinge hand splints.

    Related Experiment Videos

  • Integration of an adjustable tenodesis bar within the SAFRA system.
  • Clinical application and assessment of patient functional abilities with the SAFRA.

    • Main Results:

    • The SAFRA enables maintained prehension in patients with poor to fair wrist extensor muscle grades.
    • Functional grasp was achieved without the need for CO2 or electrically powered orthoses.
    • Patients demonstrated increased functional abilities through the use of the SAFRA.

    Conclusions:

    • The SAFRA is an effective, non-powered solution for restoring grasp in cervical spinal cord-injured patients.
    • This device offers a practical and accessible alternative to externally powered hand orthoses.
    • The SAFRA significantly enhances functional independence by improving hand prehension.