ArticleOtolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery2026
Osia Implantation in Patients With Prior Craniotomy for Skull Base Tumors.
Article in Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectiveWhile the Osia active transcutaneous bone conduction device has been shown to be safe and effective, surgical placement of the device can be problematic in patients with a prior craniotomy for tumors of the posterior fossa. This study reports on strategies and outcomes of Osia implantation in patients with previous lateral skull base surgery. STUDY
designRetrospective cohort study.
settingSingle tertiary institution.
methodsAll patients who underwent Osia 2 implantation (OSI200 or OSI300) with a surgical history of acoustic neuroma resection via craniotomy were included. Demographics and surgical design data were collected with surgical and audiometric outcomes.
resultsSeventeen patients/implants met criteria. The median age was 62.1 years. The craniotomies were 52.9% (n = 9) translabyrinthine and 47.1% (n = 8) retrosigmoid approach. The median time from craniotomy to implantation was 1.2 years (R: 0.7-20.0). Existing percutaneous bone-anchored hearing aid explantation was required for four patients with Osia conversion. Most surgical designs incorporated prior incisions (76.5%). The majority of implants were placed in an atypical location to avoid prior craniotomy sites with six requiring atypical angulation. Median follow-up duration was 15.7 months. The all-cause complication rate was 5.8%. Mean PTA4 gain (0.5, 1, 2, 4 kHz) was 34.7 ± 5.6 dB (P = .001).
conclusionOsia implantation in patients with prior craniotomy for lateral skull base tumors is safe and effective. Outcomes approximate those described for typical Osia candidates. Specialized incisional designs and implant placement were required in all patients.
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