Overlay versus underlay tympanoplasty. Part II: the study

Area of Science:

• Otolaryngology
• Surgical Techniques
• Middle Ear Surgery

Background:

• Tympanic membrane perforations are common and can lead to hearing loss.
• Various surgical techniques exist for tympanic membrane repair (tympanoplasty).
• The underlay and overlay techniques are two contemporary methods for tympanoplasty.

Purpose of the Study:

• To compare the efficacy of the underlay versus overlay techniques for tympanic membrane repair.
• To identify factors influencing successful tympanoplasty outcomes.

Main Methods:

• A prospective comparison study involving 712 cases over 9 years.
• Evaluation of outcomes for tympanic membrane repair using either underlay or overlay techniques.
• Assessment of surgical site visibility and graft placement relative to the annulus.

Main Results:

• Both underlay and overlay tympanoplasty techniques yielded reliable results.
• A postauricular incision provided greater operative site visibility, facilitating the closure of larger perforations.
• Successful outcomes were primarily attributed to careful technique and precise surgical execution, not graft placement.

Conclusions:

• The choice between underlay and overlay techniques is less critical than the surgeon's technical skill.
• Optimizing operative site exposure is crucial for reliable closure of large tympanic membrane perforations.
• Continuous refinement of surgical techniques is essential for achieving optimal tympanoplasty results.