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Needle muscle biopsy: techniques to increase sample sizes, and complications
Archives of Physical Medicine and Rehabilitation
|June 1, 1982
Summary
Muscle biopsy yield significantly increases with isometric contraction and larger needles. These enhanced techniques are safe, providing ample tissue for comprehensive analysis in physiatric research and clinical practice.
Area of Science:
- Sports Medicine
- Neurology
- Pathology
Background:
- Muscle biopsy is crucial for diagnosing muscle diseases and advancing sports science.
- Optimizing tissue acquisition is essential for comprehensive diagnostic evaluations.
Purpose of the Study:
- To compare the effectiveness of different muscle biopsy techniques.
- To determine optimal needle size and biopsy method for maximizing sample yield.
- To assess the safety and utility of higher-yield biopsy methods.
Main Methods:
- Muscle biopsy samples were obtained from athletes and patients using Bergström needles.
- Five distinct biopsy techniques were employed and compared.
- Sample weights were analyzed, correlating with needle size and biopsy method.
Main Results:
- Biopsy during isometric muscle contraction yielded 3.2 times more tissue than simple needle insertion.
- Utilizing a 5mm needle significantly increased mean sample weight compared to a 4mm needle (35mg vs. 13.7mg).
- Higher-yield techniques were safe, well-tolerated, and provided sufficient sample quality for multiple analyses.
Conclusions:
- Isometric contraction and larger diameter needles enhance muscle biopsy yield.
- Optimized muscle biopsy techniques provide adequate tissue for diverse analyses.
- Increased use of these refined needle biopsy methods is recommended for physiatric research and clinical practice.