Outcomes of anatomy based planning in cochlear implantation: a meta-analysis of advancing precision otologic medicine
In brief
Anatomy-based planning nearly doubles speech outcomes in cochlear implant adults
A meta-analysis of 11 studies (291 post-lingual patients) found that using imaging-guided, individualized electrode selection improved speech performance by about 90% compared with conventional planning, and boosted music-related perception by roughly 140%. The benefit was consistent across surgical approaches and showed no added intraoperative risk, suggesting a move toward personalized cochlear implantation, though larger randomized trials are still needed.
- Journal
- European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery (Q1)
- Published
- 3 August 2026
- Study design
- Systematic review / meta-analysis of RCTs
- Evidence level
- Level 1, High (CEBM 1a)
- Authors
- Nidhin Das K, Vidhu Sharma, Amit Goyal
- PMID
- 42543436
- DOI
- 10.1007/s00405-026-10508-1
Why clinicians should know about it
- Picked for Anatomy (top studies of the week, 9 August 2026): Meta‑analysis showing anatomy‑based planning improves cochlear implant outcomes
Abstract
OBJECTIVE: To evaluate the impact of anatomy-based planning (ABP) and individualized electrode array selection on cochlear implant outcomes, and to compare the effectiveness of precision-guided approaches versus conventional clinician-driven programming strategies. DATA SOURCES: Systematic searches of PubMed, Web of Science, Scopus, and Embase were conducted for studies published between January 2000 and June 2025. REVIEW METHODS: This meta-analysis followed PRISMA 2020 guidelines. Eleven studies involving 291 post-lingually deafened adults were included. Only studies utilizing anatomy-based planning tools with quantifiable auditory and speech outcomes were analyzed. Data synthesis was performed using a fixed-effects model, and subgroup analyses were conducted based on surgical approach and outcome type. RESULTS: All included studies demonstrated superior outcomes with ABP compared to conventional planning, with odds ratios ranging from 1.5 to 7.0. Pooled analysis revealed significant benefits in both speech-related (OR = 1.93, 95% CI: 1.56-2.40) and auditory/music-related outcomes (OR = 2.38, 95% CI: 1.98-2.86). Subgroup analysis confirmed consistent advantages of ABP across both round window and cochleostomy approaches. No study reported adverse intraoperative events directly attributable to ABP. Individualized electrode array selection based on cochlear duct length and angular insertion depth improved frequency-place alignment and auditory perception. CONCLUSION: Anatomy-based planning significantly enhances cochlear implantation outcomes by optimizing electrode positioning, minimizing frequency-place mismatch, and improving speech and auditory performance. The integration of precision imaging and individualized planning tools represents a promising step toward personalized otologic surgery. LEVEL OF EVIDENCE: Level III (Meta-analysis of non-randomized and randomized controlled trials).
Abstract as published, via PubMed.
For healthcare professionals. The summary is generated by AI from the published abstract, and the evidence level is assigned automatically from the study design on the Oxford CEBM hierarchy. Neither is medical advice. Read the full paper before changing practice.