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Candidate's thesis: Revision tympanoplasty utilizing fossa triangularis cartilage
1Department of Otolaryngology--Head and Neck Surgery, University of Nebraska Medical Center, Omaha 68198, USA. mooreg@unmc.edu
The Laryngoscope
|September 28, 2002
Summary
Fossa triangularis cartilage tympanoplasty offers a 100% success rate for tympanic membrane repair in patients with prior graft failure. This technique provides excellent hearing outcomes and allows for postoperative monitoring via tympanometry.
Area of Science:
- Otolaryngology
- Regenerative Medicine
- Biomaterials Science
Background:
- Fascia graft tympanoplasty has a failure rate, while cartilage tympanoplasty may compromise hearing and postoperative assessment.
- Tragal cartilage is thicker than ideal for tympanic membrane reconstruction, potentially impacting hearing and mobility.
Purpose of the Study:
- To evaluate the efficacy of using thinner fossa triangularis cartilage for tympanic membrane repair after failed fascia grafts.
- To assess if thinner cartilage grafts maintain healing rates, resist negative pressure, and improve hearing and mobility compared to fascia.
Main Methods:
- Retrospective review of patients undergoing total cartilage graft tympanoplasty following failed fascia grafts.
- Statistical analysis of tragal and fossa triangularis cartilage thickness and weight.
- Comparison of pre- and postoperative audiometric and tympanometric measurements.
Main Results:
- Fossa triangularis cartilage is thinner and lighter than tragal cartilage.
- 100% success rate in tympanic membrane integrity at a minimum 2-year follow-up.
- Significant air-bone gap closure, with best hearing levels often at 2000 Hz.
- Tympanometry indicated graft integrity and measurable, albeit stiffened, mobility.
Conclusions:
- Fossa triangularis cartilage is a viable option for repairing recurrent tympanic membrane perforations or atelectasis after fascia graft failure.
- This technique offers excellent hearing results and allows for standard postoperative monitoring.
- Consideration of cartilage graft tympanoplasty for high-risk otologic disease is recommended due to its resistance to negative pressure and comparable hearing outcomes to fascia.