Utilization of human amniotic membrane (HAM) in tympanoplasty: a systematic review and meta-analysis.
Chamod Danosha Perera, Jharna Chhetri Chuwan, Kasun Lakmal et al.
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In 30 seconds
This systematic review and meta-analysis evaluated the use of human amniotic membrane (HAM) as a graft material in tympanoplasty, analyzing data from eight studies involving 265 tympanoplasties. The analysis revealed a pooled complete anatomical closure rate of 92%. Despite showing a non-significant improvement in air-bone gap (ABG) of 12.66 dB, the findings suggest HAM is a promising alternative to conventional grafts.
Key findings
- Pooled complete anatomical closure rate of 92% (95% CI 0.79-0.98).
- Non-significant pooled mean difference in ABG improvement of 12.66 dB (95% CI -0.22 to 25.54).
- Operative times for HAM were significantly shorter at 54.3 minutes compared to 75.3 minutes for temporalis fascia grafting.
- Low postoperative graft failure rates were primarily due to rare instances of infection or graft lateralization.
Why it matters
The findings indicate that HAM may serve as an effective alternative graft material in tympanoplasty, potentially leading to better surgical outcomes and reduced operative times. Understanding these options can help clinicians make informed decisions regarding surgical repair of tympanic membrane perforations.
What to keep in mind
The majority of included studies were non-randomized and carried a serious risk of bias, limiting the strength of the conclusions.