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Related Experiment Videos

Extensor physiology in the hand and wrist

S T Thompson1, M A Wehbé

  • 1Hand Therapy Department, Pennsylvania Hand Center, Bryn Mawr, USA.

Hand Clinics
|August 1, 1995
PubMed
Summary
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Understanding finger extension requires examining the complex extensor tendon mechanism. This study details the roles of its components, including tendon excursion, strength, and electromyographic activity.

Area of Science:

  • Biomechanics
  • Human Physiology
  • Anatomy

Background:

  • Finger extension involves a complex interplay of anatomical structures.
  • The extensor tendon mechanism is crucial for hand function.
  • Detailed understanding of these components is essential for clinical applications.

Purpose of the Study:

  • To elucidate the physiological roles of individual components within the finger extensor tendon mechanism.
  • To provide a comprehensive overview of finger extension biomechanics.

Main Methods:

  • Review of anatomical structures involved in finger extension.
  • Analysis of tendon excursion data.
  • Discussion of extensor muscle strength.
  • Examination of electromyographic (EMG) activity.

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Main Results:

  • Each component of the extensor tendon mechanism contributes uniquely to finger extension.
  • Tendon excursion, muscle strength, and EMG patterns correlate with functional outcomes.
  • The coordinated action of these elements dictates the efficiency of finger extension.

Conclusions:

  • The physiology of finger extension is a multifaceted process.
  • A thorough understanding of the extensor tendon mechanism is vital for diagnosing and treating hand injuries.
  • Further research can refine our knowledge of these complex interactions.