A Comparative Review of Osseointegration Failure Between Osseointegrated Bone Conduction Device Models in Pediatric Patients

作者：Nelson Kurt L; Cox Matthew D^*; Richter Gresham T; Dornhoffer John L

来源：Otology & Neurotology, 2016, 37(3): 276-280.

DOI：10.1097/MAO.0000000000000970

• BAHA
• BAHAD
• BAI
• Bone-anchored implant
• Conductive hearing loss
• Deafness
• Implanted hearing aid
• OCBD
• Osseointegrated bone conduction device
• Osseointegration
• Sensorineural hearing loss
• Single-sided

Objective:Compare rates of osseointegration failure (OIF) between system 2 (200 series) and system 3 (BI300) osseointegrated bone conduction device (OCBD) models.Study Design:Case series with chart review.Setting:Tertiary referral center.Patients:Pediatric patients who were implanted with either system 2 or system 3 OCBD between May 2009 and July 2014 at Arkansas Children's Hospital.Interventions:Implantation with either system 2 or system 3 OCBD using 3- and 4-mm implants with 5.5- and 8.5-mm abutments (system 2) or 6- and 9-mm abutments (system 3).Main Outcome Measures:OIF with resulting loss of flange-fixture.Results:OIF occurred in 28.6% (14/49) of implanted fixtures in system 2 compared with 8.0% (2/25) of implanted fixtures in system 3 (p=0.042). The average time to complication for system 2 was 13 months compared with 3 months for system 3. The causes of OIF in system 2 were trauma (n=4), chronic soft tissue disease (n=5), or idiopathic in nature (n=5). System 3 failures were both because of trauma. Using the combined cohorts, the average age of patients who experienced OIF was 8.7 years, compared with 11.4 years in patients without OIF (p=0.047). There was no difference in OIF among 3-mm and 4-mm screws (p=0.876), linear and flap technique (p=0.375), or surgeons (p=0.211).Conclusion:System 3 OCBD showed a significantly reduced rate of OIF compared with system 2 in our study. Modification to the system 2 implant resulted in improved rate of OIF. Younger age was independently associated with a higher rate of OIF when evaluating both systems.

• 出版日期2016-3