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Tissue culture of surgically prepared temporalis fascia
Abstract:
Temporalis fascia which is used to graft the tympanic membrane has been shown to be viable in tissue culture by a previous pilot study. This present study reports the effect on the viability of the fascia by scraping loose connective tissue from it and allowing it to dry. Pieces of fascia from 30 patients were each divided in 4 and prepared to give explants, fresh, fresh and scraped, dried, and dried and scraped. The fascia grew from 17 patients when cultured fresh, 5 when fresh and scraped, 1 when dried, and none when dried and scraped. These results are significantly different and show that the fascia is devitilized when prepared by the normal method for use in tympanoplasty.
Insights
Preparing temporalis fascia for tympanoplasty by scraping or drying significantly reduces its viability. Freshly prepared fascia demonstrates the best growth in tissue culture, crucial for successful tympanic membrane grafting.
Area of Science:
- Biomedical Engineering
- Tissue Engineering
- Otolaryngology
Background:
- Temporalis fascia is a common graft material for tympanic membrane reconstruction.
- Previous studies indicated the viability of temporalis fascia in tissue culture.
- Standard preparation methods may impact graft viability.
Purpose of the Study:
- To evaluate the impact of scraping and drying on temporalis fascia viability.
- To determine optimal preparation techniques for tympanic membrane grafting.
Main Methods:
- Temporalis fascia samples from 30 patients were divided into four groups: fresh, fresh and scraped, dried, and dried and scraped.
- Explants were cultured to assess tissue viability.
- Growth rates were compared across different preparation methods.
Main Results:
- Fascia demonstrated significant growth when cultured fresh (17/30 patients).
- Scraping reduced viability (5/30 patients), and drying further decreased it (1/30 patients).
- No viability was observed in dried and scraped samples (0/30 patients).
Conclusions:
- The standard preparation method for temporalis fascia, involving scraping and drying, significantly compromises its viability.
- Fresh, unprepared temporalis fascia exhibits the highest viability for tympanic membrane grafting.
- Optimized preparation techniques are needed to improve graft take in tympanoplasty.