caa a22 4500 606182799 CHVBK 20210128100817.0 cr unu---uuuuu 210128e20150601xx s 000 0 eng 10.1007/s00405-014-2932-7 doi (NATIONALLICENCE)springer-10.1007/s00405-014-2932-7 Stability and survival of bone-anchored hearing aid implant systems in post-irradiated patients [Elektronische Daten] [Mark Wilkie, Kathryn Lightbody, Ali Salamat, Kalyan Chakravarthy, David Luff, Robert Temple] Bone-anchored hearing aids (BAHAs) are based on the principle of osseointegration, which is fundamental to implant stability and survival. Previous exposure to ionising radiation may compromise this, as evidenced in relation to dental and craniofacial implants. There is a dearth of data, however, regarding BAHA implant systems in patients with previously irradiated implant sites. We sought, therefore, to investigate implant stability and survival in such patients. Patients were identified retrospectively from our electronic BAHA database. Hospital records were reviewed for demographics; operative technique; complications; and details regarding previous irradiation. Implant stability was assessed by resonance frequency analysis (RFA), generating a numerical value—implant stability quotient (ISQ). Extrapolating from dental studies, successfully loaded implants typically have ISQs of ≥60. Readings were, therefore, interpreted with respect to this. Seven patients were identified for inclusion. Mean time between irradiation and implant insertion was 33 months (range 16-72months), and mean time from implant insertion to RFA measurement was 41months (range 3-96months). Operatively, all patients underwent single-stage procedures under local anaesthesia. One patient suffered a Holger's grade 2 skin reaction, while two suffered significant skin flap failure, requiring revision procedures. The implant survival rate was 100%. All ISQ values were >60, with a mean of 66.9 (95% confidence interval 63.1-70.6). Our data support sufficient osseointegration of BAHA implant systems in post-irradiated patients, but highlight issues with wound healing. Contemporary soft tissue preservation operative techniques will likely overcome this, facilitating safe and efficacious BAHA insertion in this ever-increasing group of patients. Springer-Verlag Berlin Heidelberg, 2014 Bone-anchored hearing aid nationallicence Osseointegration nationallicence Radiotherapy nationallicence Resonance frequency analysis nationallicence Implant stability nationallicence Implant survival nationallicence Wilkie Mark Department of Otorhinolaryngology, Head and Neck Surgery, Countess of Chester Hospital, CH2 1UL, Chester, UK aut Lightbody Kathryn Department of Otorhinolaryngology, Head and Neck Surgery, Countess of Chester Hospital, CH2 1UL, Chester, UK aut Salamat Ali Department of Otorhinolaryngology, Head and Neck Surgery, Countess of Chester Hospital, CH2 1UL, Chester, UK aut Chakravarthy Kalyan Department of Otorhinolaryngology, Head and Neck Surgery, Countess of Chester Hospital, CH2 1UL, Chester, UK aut Luff David Department of Otorhinolaryngology, Head and Neck Surgery, Countess of Chester Hospital, CH2 1UL, Chester, UK aut Temple Robert Department of Otorhinolaryngology, Head and Neck Surgery, Countess of Chester Hospital, CH2 1UL, Chester, UK aut European Archives of Oto-Rhino-Laryngology Springer Berlin Heidelberg 272/6(2015-06-01), 1371-1376 0937-4477 272:6<1371 2015 272 405 https://doi.org/10.1007/s00405-014-2932-7 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00405-014-2932-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wilkie Mark Department of Otorhinolaryngology, Head and Neck Surgery, Countess of Chester Hospital, CH2 1UL, Chester, UK aut NATIONALLICENCE 700 1- Lightbody Kathryn Department of Otorhinolaryngology, Head and Neck Surgery, Countess of Chester Hospital, CH2 1UL, Chester, UK aut NATIONALLICENCE 700 1- Salamat Ali Department of Otorhinolaryngology, Head and Neck Surgery, Countess of Chester Hospital, CH2 1UL, Chester, UK aut NATIONALLICENCE 700 1- Chakravarthy Kalyan Department of Otorhinolaryngology, Head and Neck Surgery, Countess of Chester Hospital, CH2 1UL, Chester, UK aut NATIONALLICENCE 700 1- Luff David Department of Otorhinolaryngology, Head and Neck Surgery, Countess of Chester Hospital, CH2 1UL, Chester, UK aut NATIONALLICENCE 700 1- Temple Robert Department of Otorhinolaryngology, Head and Neck Surgery, Countess of Chester Hospital, CH2 1UL, Chester, UK aut NATIONALLICENCE 773 0- European Archives of Oto-Rhino-Laryngology Springer Berlin Heidelberg 272/6(2015-06-01), 1371-1376 0937-4477 272:6<1371 2015 272 405