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Injection Depth in Intradermal Therapy: Update and Correction of Published Data
Journal of Drugs in Dermatology : JDD
|January 11, 2018
Summary
Most intradermal injections for skin rejuvenation are performed too deep, with over 70% reaching the hypodermis instead of the dermis. This highlights a critical need for improved injection techniques and histological classification accuracy.
Area of Science:
- Dermatology
- Aesthetic Medicine
- Histology
Background:
- Intradermal therapy and skin rejuvenation treatments are widely used for facial, neck, and décolleté areas.
- Published reports often claim specific injection depths for these procedures.
- Accurate injection depth is crucial for treatment efficacy and safety.
Purpose of the Study:
- To compare calculated injection depths with published claims for intradermal therapy and skin rejuvenation.
- To assess the accuracy of reported injection depths in scientific literature.
- To identify discrepancies between intended and actual injection depths.
Main Methods:
- Utilized a mathematical formula to calculate theoretical injection depths based on anatomical considerations.
- Retrieved and analyzed data from published studies on intradermal injections.
- Compared calculated depths with claimed depths from the literature.
Main Results:
- Over 70% of analyzed injections were found to be deeper than intended, reaching the hypodermis (fat layer).
- The majority of injections did not achieve the claimed intradermal depth.
- This suggests a common issue with achieving precise needle placement in intradermal procedures.
Conclusions:
- Current histological classifications may require review and correction.
- Practitioners need enhanced training to achieve accurate needle penetration angles and control depth.
- Improved understanding and execution of injection techniques are essential for effective intradermal therapy.
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