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Dynamic splinting following flexor tendon repair.

N D Citron, A Forster

    Journal of Hand Surgery (Edinburgh, Scotland)
    |February 1, 1987
    PubMed
    Summary
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    Dynamic flexor tendon repair splints show varied muscle contractions. The study suggests minimal rubber band resistance is sufficient for effective finger flexion during extensor rehabilitation.

    Area of Science:

    • Orthopedic surgery
    • Rehabilitation medicine
    • Biomechanics

    Background:

    • Dynamic flexor tendon repair splints, such as the Kleinert splint, are commonly used post-operatively.
    • These splints utilize rubber bands to provide passive flexion and assist extensor muscles.
    • The optimal tension for these rubber bands remains a subject of clinical consideration.

    Purpose of the Study:

    • To investigate the electromyographic activity of the flexor digitorum profundus muscle during finger extension in patients using Kleinert splints.
    • To determine if increased resistance from rubber bands offers any biomechanical advantage.
    • To establish guidelines for appropriate rubber band tension in dynamic splinting.

    Main Methods:

    • Electromyography (EMG) was used to measure muscle activity.

    Related Experiment Videos

  • Subjects were fitted with dynamic flexor tendon repair (Kleinert) splints.
  • EMG data was collected during active finger extension exercises.

    • Main Results:

    • Significant variability was observed in the flexor digitorum profundus muscle's contraction levels during finger extension.
    • No clear advantage was identified for providing additional resistance via stronger rubber bands.
    • Muscle activity did not correlate with increased rubber band tension.

    Conclusions:

    • The findings suggest that excessive rubber band tension in Kleinert splints may not enhance extensor muscle function.
    • Minimal rubber band tension, just sufficient for passive return to the resting position, appears adequate.
    • This approach may optimize patient comfort and reduce unnecessary strain during flexor tendon rehabilitation.