Monksfield Peter, Ho Eu Chin, Reid Andrew, Proops David
Department of Otolaryngology, University Hospital Birmingham, UK.
Otol Neurotol. 2009 Apr;30(3):274-6. doi: 10.1097/MAO.0b013e31819679ca.
Use of the longer (8.5 mm) abutment for a Bone-Anchored Hearing Aid has been helpful for a certain group of patients. The most common reason for its use is soft tissue problems with tissue overgrowth interfering with device function. The longer abutment has been used in our institution, a tertiary referral center, on a named patient basis since 2002, and more than 100 patients have received it.
This paper will review this subgroup of patients and describe their demographics. Comorbidity, smoking history, graft failure, infection, and index of deprivation will be looked at as contributing factors for this group with soft tissue problems.
We identified 111 patients who had longer abutments ordered for them, and a retrospective case review was performed.
Eighty-one patients required soft tissue reduction surgery because of overgrowth, and all but one (80/81 [98.8%]) of these patients required no further surgery after having their 5.5-mm abutment changed to the 8.5-mm version. One patient underwent further surgery 10 months after the longer abutment was inserted but has been problem-free for 16 months since then. Length of follow-up ranged from 6 months to 5 years after converting to the longer abutment.
We have found the longer abutment to be very successful for the small proportion of patients with troublesome soft tissue overgrowth. We would advocate its use when topical management and surgical intervention have failed to control the skin reaction.
对于特定的一组患者，使用较长（8.5毫米）的骨锚式助听器基台很有帮助。使用它的最常见原因是软组织问题，即组织过度生长干扰了设备功能。自2002年以来，在我们这个三级转诊中心，较长的基台已根据具体患者情况使用，已有100多名患者接受了该基台。
本文将回顾这一亚组患者并描述其人口统计学特征。合并症、吸烟史、移植失败、感染和贫困指数将被视为导致该组患者出现软组织问题的因素。
我们确定了111名定制了较长基台的患者，并进行了回顾性病例分析。
81名患者因组织过度生长需要进行软组织减容手术，除1名患者外（80/81 [98.8%]），这些患者在将5.5毫米基台更换为8.5毫米基台后均无需进一步手术。1名患者在插入较长基台10个月后接受了进一步手术，但从那时起16个月来一直没有问题。转换为较长基台后的随访时间为6个月至5年。
我们发现较长的基台对于一小部分软组织过度生长问题棘手的患者非常成功。当局部治疗和手术干预未能控制皮肤反应时，我们提倡使用它。
