Objective: Evaluation of a new active osseointegrated bone-conduction hearing implant in moderate to severe mixed-hearing loss. Study Design: Prospective observational study of a series of cases. Setting: Tertial referral center. Patients: Twenty patients with moderate mixed-hearing loss were evaluated (10 Cochlear Osia group and 10 Baha 5 Power Connect -control group). Intervention: Rehabilitative. Main Outcome Measures: Hearing performance in quiet and in noise and quality-of-life were evaluated. Results: Improvements in audibility, speech-understanding, speech-recognition, and quality-of-sound in noise and quiet were found for the Osia System compared with preoperative unaided hearing and performance was similar to that obtained with Baha 5 Power Connect. Conclusions: The new active transcutaneous bone conduction system provided a tonal improvement in free-field at middle and high frequencies. The performance in speech recognition in quiet and in noise was similar to control group outcomes.

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