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Review
. 2022 Jul 8;6(3):2473974X221108935.
doi: 10.1177/2473974X221108935. eCollection 2022 Jul-Sep.

Comparison of Inlay Cartilage Butterfly and Underlay Temporal Fascia Tympanoplasty

José Faibes Lubianca Neto  1   2   3   4 , Artur Koerig Schuster  1   3   4 , João Pedro Neves Lubianca  5 , Roland Douglas Eavey  6
Affiliations
Review

Comparison of Inlay Cartilage Butterfly and Underlay Temporal Fascia Tympanoplasty

José Faibes Lubianca Neto et al. OTO Open. .

Abstract

Objective: To systematically review the results of inlay cartilage butterfly tympanoplasty and standard underlay temporal fascia tympanoplasty for anatomic and functional end points.

Data sources: PubMed, Embase, MEDLINE, and Virtual Health Library (VHL/Lilacs) databases were searched from inception through April 2, 2021. No restrictions on language, publication year, or publication status were applied.

Review methods: The meta-analysis included data from articles that met inclusion criteria and were extracted by 2 authors independently. The PRISMA statement was followed. Risk of Bias 2.0 and Newcastle-Ottawa Scale were used to assess risk of bias. The primary outcome was tympanic membrane closure rate. The secondary outcome was improvement of the air-bone gap.

Results: Ten studies were included, 9 cohort studies and 1 randomized clinical trial, with 577 patients. The graft take rate was 82.8% in the butterfly cartilage inlay tympanoplasty group and 85.2% in the temporal fascia underlay tympanoplasty group (relative risk, 1.01; 95% CI, 0.93-1.11; I 2 = 42%, P = .08). The air-bone gap reduction ranged from 6.1 to 11.28 in the butterfly cartilage inlay group and from 5.2 to 12.66 in the temporal fascia underlay group, with a mean difference between groups of -2.08 (95% CI, -3.23 to -0.94; I 2 = 58%, P = .04), favoring temporal fascia underlay.

Conclusion: The 2 tympanoplasty techniques analyzed here produced similar results in terms of successful reconstruction of the tympanic membrane and reduction in the air-bone gap. Neither age nor follow-up length of time influenced outcomes.

Keywords: butterfly cartilage graft; inlay; tympanic membrane perforation; tympanoplasty; underlay.

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Figures

Figure 1.
Figure 1.
PRISMA flowchart from the initial 731 studies to the 10 included in the meta-analysis.
Figure 2.
Figure 2.
Forest plot of the meta-analysis of anatomic success: graft take rate. BCIT, butterfly cartilage inlay tympanoplasty; TFUT, temporal fascia underlay tympanoplasty.
Figure 3.
Figure 3.
Forest plot of the meta-analysis of functional success: reduction in the air-bone gap. BCIT, butterfly cartilage inlay tympanoplasty; TFUT, temporal fascia underlay tympanoplasty.
See this image and copyright information in PMC

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