La d What is the surgery done to widen the cartilaginous part of the external auditory canal called?

Explanation

## Correct Answer: A. Meatoplasty Meatoplasty is the surgical procedure specifically designed to widen the external auditory meatus (the cartilaginous and/or bony portion of the external auditory canal). The term derives from "meatus" (opening/passage) + "plasty" (surgical reconstruction). This procedure is performed when the external auditory canal is narrowed due to congenital stenosis, post-inflammatory strictures, or chronic suppurative otitis media with canal involvement. The surgery involves removing bone and/or cartilage from the posterior and superior walls of the canal, sometimes combined with skin grafting, to enlarge the canal diameter and improve ventilation, drainage, and accessibility for otologic procedures. In Indian ENT practice, meatoplasty is commonly performed in patients with chronic otitis media with canal involvement or congenital canal atresia/stenosis, particularly in cases where conventional canal wall-down mastoidectomy alone is insufficient. The procedure restores normal canal anatomy and prevents recurrent infections by improving epithelialization and drainage. ## Why the other options are wrong **B. Myringoplasty** — Myringoplasty is surgical repair of a perforated tympanic membrane (eardrum), not widening of the external auditory canal. This is a common NBE trap—students confuse the prefix 'myo-' (muscle/membrane) with 'meato-' (meatus/canal). Myringoplasty addresses tympanic membrane defects, whereas meatoplasty addresses canal stenosis. **C. Otoplasty** — Otoplasty refers to cosmetic or reconstructive surgery of the external ear (auricle/pinna), such as correction of prominent ears or microtia. It does not involve the external auditory canal. This option exploits confusion between 'oto-' (ear in general) and the specific anatomical target (canal meatus). **D. Tympanoplasty** — Tympanoplasty is repair of the tympanic membrane and/or ossicular chain, typically performed via transcanal or postauricular approach for conductive hearing loss. It does not widen the external auditory canal. This is a trap for students who conflate all ear surgeries without distinguishing the anatomical target. ## High-Yield Facts - **Meatoplasty** = widening of the external auditory meatus (cartilaginous ± bony canal) by removing posterior/superior canal wall bone and cartilage. - **Indications**: congenital canal stenosis/atresia, post-inflammatory strictures, chronic suppurative otitis media with canal involvement, and canal exostosis. - **Myo-** prefix = muscle/membrane (myringoplasty); **Meato-** prefix = meatus/canal opening (meatoplasty)—critical distinction for NBE. - **Otoplasty** = auricle/pinna surgery; **Tympanoplasty** = tympanic membrane/ossicular repair; **Myringoplasty** = eardrum perforation repair. - In Indian ENT practice, meatoplasty is often combined with canal wall-down mastoidectomy in chronic otitis media to prevent recurrent drainage and infection. ## Mnemonics **MEATO-PLASTY = MEATUS WIDENING** **MEATO** = MEAtus (the canal opening) | **PLASTY** = surgical reconstruction. Meatoplasty widens the external auditory meatus. Use this when you see 'widen canal' in the stem. **EAR SURGERY PREFIXES** **OTO-plasty** = Outer ear (auricle) | **MYRING-oplasty** = Membrane (eardrum) | **MEATO-plasty** = Meatus (canal) | **TYMPAN-oplasty** = Tympanic membrane + ossicles. Match the prefix to the anatomical target. ## NBE Trap NBE exploits confusion between ear surgery prefixes—students often conflate meatoplasty (canal widening) with myringoplasty (eardrum repair) or tympanoplasty (ossicular repair) because all involve the ear. The discriminator is the anatomical target: meatus = canal, myrinx = membrane, tympanum = middle ear structures. ## Clinical Pearl In Indian ENT clinics, meatoplasty is frequently performed in chronic suppurative otitis media patients with canal involvement to prevent recurrent ear discharge and facilitate long-term canal epithelialization—a key step in achieving "canal healing" rather than just controlling infection with antibiotics alone. _Reference: Bailey & Love Ch. 40 (Otology); Dhingra's Diseases of the Ear, Nose and Throat (Meatoplasty indications and technique)_