Clinical outcomes of 188 patients implanted with Med-El stapes prostheses

Wolfram W, Zwittag PM, Niederwanger L, Rubicz N, Sprinzl G, Magele A, Beutner D, Bevis N, Schimanski E, Arndt S, Offergeld C, Arnoldner C, Riss D, Skarżyński PH, Plichta Ł, Hornung J, Taha L, Lenarz T, Busch S, Windisch F, Loader B (2025)

Publication Type: Journal article

Publication year: 2025

Journal

European Archives of Oto-Rhino-Laryngology Springer

DOI: 10.1007/s00405-025-09733-x

Abstract

Purpose: This multicentric, retrospective study aimed to analyze the safety and effectiveness of the mAXIS Stapes Prosthesis, mLOOP Stapes Prosthesis, mZAM Stapes Prosthesis, and mFIX Stapes Prosthesis. Methods: Patients underwent stapes surgery and implantation of a mAXIS Stapes Prosthesis, mLOOP Stapes Prosthesis, mZAM Stapes Prosthesis, or mFIX Stapes Prosthesis (MED-EL, Innsbruck, Austria). The clinical data was retrospectively analyzed. Follow-up examination included access to medical records (for adverse events) of the patients, ear microscopy and pure-tone audiometry to determine the post-operative pure tone average of the frequencies 0.5, 1, 2 and 3 kHz (PTA4). The post-operative PTA4 air bone gap (ABG) was used to evaluate the audiological outcome. A post-operative PTA4 ABG ≤ 20 dB was defined as successful rehabilitation. A post-operative minimum and maximum follow-up period was not defined. Results: 189 patients were implanted with a MED-EL stapes prosthesis mainly as treatment of hearing loss caused by otosclerosis. 188 (186 adults, 2 children; 57 conductive hearing loss (CHL), 131 mixed hearing loss (MHL)) patients were examined for adverse events (AEs). 168 (166 adults, 2 children, 51 CHL, 117 MHL) patients underwent audiological examination. Audiology: 110 (65.5%) patients achieved a post-operative PTA4 ABG ≤ 10 dB. 154 (91.7%) patients achieved a post-operative PTA4 ABG ≤ 20 dB and therefore successful rehabilitation. Individual bone conduction (BC) PTA4 thresholds were stable in 159 (94.6%) patients. AEs: 12 (6.4%, adults only) patients had 13 AEs. Conclusion: Clinical data demonstrated satisfactory audiological results after implantation of the mAXIS Stapes Prosthesis, mLOOP Stapes Prosthesis, mZAM Stapes Prosthesis, and mFIX Stapes Prosthesis. The MED-EL stapes prostheses are safe and effective. Trial registration number: NCT05565339 (clinicaltrials.gov).

Authors with CRIS profile

Joachim Hornung Department of Otorhinolaryngology – Head and Neck Surgery (HNO-Klinik) Lava Taha Department of Otorhinolaryngology – Head and Neck Surgery (HNO-Klinik)

Involved external institutions

Medizinische Universität Wien AT Austria (AT) Clinic of the International Center of Hearing and Speech Medincus PL Poland (PL) Medizinische Hochschule Hannover (MHH) / Hannover Medical School DE Germany (DE) Klinikum Wels-Grieskirchen AT Austria (AT) Kepler Universitätsklinikum (KUK) AT Austria (AT) Fachhochschule St. Pölten AT Austria (AT) Georg-August-Universität Göttingen DE Germany (DE) Universitätsklinikum Freiburg DE Germany (DE)

How to cite

APA:

Wolfram, W., Zwittag, P.M., Niederwanger, L., Rubicz, N., Sprinzl, G., Magele, A.,... Loader, B. (2025). Clinical outcomes of 188 patients implanted with Med-El stapes prostheses. European Archives of Oto-Rhino-Laryngology. https://doi.org/10.1007/s00405-025-09733-x

MLA:

Wolfram, Wendelin, et al. "Clinical outcomes of 188 patients implanted with Med-El stapes prostheses." European Archives of Oto-Rhino-Laryngology (2025).

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