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Extensor physiology in the hand and wrist
1Hand Therapy Department, Pennsylvania Hand Center, Bryn Mawr, USA.
Hand Clinics
|August 1, 1995
Summary
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.
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.