Cochlear Duct Length: Rethinking Its Role in Auditory Outcomes

• DOI: 10.4274/tao.2024.2024-8-9
• Publication Date: 2025-03-26T08:14:41Z
• Authors: Priyank Agrawal; Vishudh Mohan; Vidhu Sharma; Darwin Kaushal; Sarbesh Tiwari; Kapil Soni; Pushpinder S. Khera; Amit Goyal
• Keywords: Cochlear duct

To assess the relation between cochlear duct length (CDL) and audiological outcome after implant surgery in prelingually deafened children. In a prospective cohort study, 36 deaf children underwent implantation at All India Institute of Medical Sciences, Jodhpur. Preoperative high-resolution computed tomography (HRCT) T2 weighted sequences magnetic resonance imaging (MRI) temporal bones were used to calculate CDL. Patients followed up for 12 months postoperatively with visits every three scoring (infant-toddler meaningful auditory integration scale revised central processing scores). Thirty-six candidates included study. The mean CDL, as measured on bone HRCT, was 32.72±1.278 mm, and, MRI, 33.4689±1.31. This study is suggestive widely dispersed data (coefficient variance <0.5), hence, hypothesis "implantation CDL close 31.5 mm will give best improvement functional scores" cannot be generalized. scores likely attributable other causes/multifactorial causation. We found no relationship outcomes post-cochlear Further research larger sample sizes, multicenter designs extended follow-up periods warranted strengthen evidence this area.