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Eighty-three patients underwent Osia® OSI200 and OSI300 implantation (89 implants). Outcomes assessed surgical technique, postoperative wound healing, and long-term skin integrity and aesthetics, including retroauricular bump visibility, palpability, and pain. Most patients had no complications; explantation occurred in two cases, revision in one seroma case. Freiburg showed significantly better bump visibility/palpability and pain (p \u003C 0.05), while Poznan reported numbness less often (p \u003C 0.05). 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Both centers achieved excellent postoperative skin integrity with minimal scar visibility in most patients.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},461503,1791219895,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":34,"category_name":35,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":24,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":144,"read_time":145},962090760505,"https://ap-avatar.wpscdn.com/davatar_155a257f0dc6eb9ab79c44ca47cae57d","Article  \nComparison of Different Surgical Techniques for Osia® System Implantation—Experience from Two European Clinical Centers  \nWojciech Gaw˛ecki 1, *,†, Ann-Kathrin Rauch 2,†, Marta Pietraszek 1,3, Maria Jaworska 1 and Susan Arndt 2  \nAcademic Editor: George K. Psillas  \nReceived: 30 October 2025  \nRevised: 12 December 2025  \nAccepted: 17 December 2025  \nPublished: 21 December 2025  \nCopyright: © 2025 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.  \n1 Department of Otolaryngology and Laryngological Oncology, Poznan University of Medical Sciences, 60-355 Pozna ´n, Poland; [pietm@o2.pl](pietm@o2.pl) (M.P.); [maria.jaworska@usk.poznan.pl](maria.jaworska@usk.poznan.pl) (M.J.)  \n2 Department of Otorhinolaryngology, Medical Center–University of Freiburg, Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany; [ann-kathrin.rauch@uniklinik-freiburg.de](ann-kathrin.rauch@uniklinik-freiburg.de) (A.-K.R.); [susan.arndt@uniklinik-freiburg.de](susan.arndt@uniklinik-freiburg.de) (S.A.)  \n3 Doctoral School, Poznan University of Medical Sciences, 60-812 Pozna ´n, Poland  \n* [Correspondence: wojgaw@interia.pl](Correspondence: wojgaw@interia.pl)[ ](Correspondence: wojgaw@interia.pl)† These authors contributed equally to this work.  \nAbstract  \nBackground/Objectives: This study aimed to compare two surgical techniques for Osia® system implantation performed at two European clinical centers: Pozna ´n (Poland) and Freiburg (Germany) . Methods: The study included 83 patients who underwent Osia® OSI200 and OSI300 implantation (89 implants) . The analysis focused on surgical technique, postoperative healing, and long-term skin integrity and aesthetic outcomes. Results: The centers differed in their surgical approaches, particularly regarding skin incision design and bone preparation. Most patients experienced no complications. Implant explantation was required in two cases, and one patient with recurrent seroma underwent revision surgery. Both centers achieved excellent postoperative skin integrity, with minimal scar visibility in most patients. Patients treated in Freiburg showed significantly better outcomesin terms of retroauricular bump visibility or palpability (p \u003C 0.05) and postoperative pain (p \u003C 0.05) . Conversely, patients operated on in Pozna ´n reported numbness less frequently (p \u003C 0 .05) . Conclusions: Osia® system implantation is a safe and well-tolerated procedure, with postoperative complications occurring in only a small proportion of cases. The Freiburg technique appears to reduce visibility and palpability of retroauricular bump and postoperative pain, but may slightly increase the risk of numbness and, in some cases, lead to a more visible scar compared to the Pozna ´n approach. Optimal outcomes may be achieved by combining elements of both surgical techniques.  \nKeywords: bone conduction devices; bone conduction implants; Osia®; hearing loss; single-sided deafness; surgical technique  \n1. Introduction  \nBone conduction implants (BCIs) are a well-established therapeutic option for patients with unilateral or bilateral conductive and mixed hearing loss, as well as those with singlesided deafness (SSD) [1–3] . The first successful implantation was reported by Tjellströmand Granström in 1977 [4] . Since then, a variety of BCI systems have been introduced, which are typically classified into passive and active types [3,5,6] .  \nIn active bone conduction systems, only the external sound processor is positioned outside the body, typically posterior and superior to the auricle. The remaining components, including the transducer, are implanted directly in or on the patient’s bone, allowing for  \nhigh-quality sound transmission. The processor is magnetically coupled to the implanted component through the intact skin, thereby maintaining skin integrity [1,5,7] . This concept was devel","cbCaisfn7XV2s0Fc","https://ap.wps.com/l/cbCaisfn7XV2s0Fc","pdf",731430,18,"English","# Introduction\n## Bone conduction implants and device types\n## Osia® system and surgical background\n# Materials and Methods\n## Study design","[{\"question\":\"What was the main purpose of comparing the two Osia® surgical techniques?\",\"answer\":\"To compare outcomes of Osia® system implantation performed using two surgical approaches at two European clinical centers, focusing on skin integrity and aesthetic results.\"},{\"question\":\"How many patients and implants were included in the study?\",\"answer\":\"The study included 83 patients who underwent Osia® OSI200 and OSI300 implantation, totaling 89 implants.\"},{\"question\":\"What differences in outcomes were observed between the Freiburg and Poznan centers?\",\"answer\":\"Freiburg reported significantly better retroauricular bump visibility/palpability and postoperative pain (p \\u003c 0.05), while Poznan reported numbness less frequently (p \\u003c 0.05). Both centers achieved excellent postoperative skin integrity with minimal scar visibility in most patients.\"}]","Comparison of Different Surgical Techniques for Osia® System Implantation - Experience from Two European Clinical Centers | PDF",1790761745,45]