In the Wullstein classification of tympanoplasty, which type places the graft directly over the head of the stapes, converting it into a columella?
- A Type I
- B Type II
- C Type III ✓
- D Type IV
Correct answer: C. Type III
Explanation
Wullstein Type III tympanoplasty lays the graft onto the head of the stapes when the malleus and incus are absent, so the stapes acts as a columella transmitting sound directly to the oval window. Type I is myringoplasty with an intact ossicular chain, Type II interposes the graft on the incus or malleus, and Type IV places the graft to shield the round window while leaving the footplate exposed in the oval window niche.
Reference: Dhingra, Diseases of Ear, Nose and Throat, 8th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
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