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Updated: Jul 17, 2026

Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
Published on: March 24, 2023
Bone-anchored hearing aids in infants and children younger than 5 years
Taryn Davids1, Karen A Gordon, Doug Clutton
1Department of Otolaryngology and Otolaryngology-Head and Neck Surgery, The Hospital for Sick Children, Toronto, Ontario, USA.
Insights
Bone-anchored hearing aids (BAHAs) can be safely implanted in children younger than 5 years. A prolonged interval between two-stage BAHA implantation stages is effective for younger children, yielding comparable surgical success to older children.
Area of Science:
- Otolaryngology
- Pediatric Audiology
- Hearing Rehabilitation
Background:
- Bone-anchored hearing aids (BAHAs) are indicated for children over 5 with bilateral maximal conductive hearing loss.
- Early auditory and speech-language development may benefit from earlier BAHA intervention.
- Surgical outcomes in younger pediatric populations require further investigation.
Purpose of the Study:
- To evaluate the safety and efficacy of BAHA implantation in children younger than 5 years.
- To compare surgical complication rates and implantation intervals between younger and older pediatric BAHA recipients.
- To assess the feasibility of adapting BAHA implantation protocols for earlier intervention.
Main Methods:
- Retrospective review of surgical data for 20 children aged 5 years or younger receiving BAHA implants over 10 years.
- Comparison group of 20 older children (mean age 7.63 years) with BAHA implants.
- Analysis of traumatic and skin revision complication rates and interstage intervals for two-stage procedures.
Main Results:
- The mean interstage interval was significantly longer in younger children (7.72 months) compared to older children (4.41 months).
- Two traumatic fixture losses occurred in younger children versus four in older children.
- Three younger children required skin site revision; all patients successfully use their BAHAs.
Conclusions:
- Two-stage BAHA implantation with a prolonged interval is surgically successful in children younger than 5 years.
- Outcomes in younger pediatric BAHA recipients are comparable to those in older children.
- Early BAHA intervention is a viable option for improving auditory and speech development in young children.
Objective:
While bone-anchored hearing aids (BAHAs) are currently indicated for rehabilitation in children older than 5 years with bilateral maximal conductive hearing loss, our objective was to capitalize on potentially important stages of auditory and speech-language development by providing BAHAs to children younger than 5 years.
Design:
A retrospective review of surgical data of children receiving BAHA implants over a 10-year period.
Setting:
The Hospital for Sick Children, Toronto, Ontario.
Patients:
Twenty children 5 years or younger (mean +/- SD age, 3.21 +/- 1.65 years) served as the study group, while 20 older children (mean +/- SD age, 7.63 +/- 1.55 years) served as the comparison group.
Interventions:
All patients received BAHA implants. Children with cortical bone thickness less than 2.5 mm underwent a 2-stage procedure; children with cortical bone thickness greater than 4 mm underwent a single-stage procedure.
Main Outcome Measures:
Traumatic and skin revision complication rates and implantation interstage intervals were compared between groups.
Results:
The mean +/- SD interstage interval was 7.72 +/- 3.81 months for the younger children, which was significantly longer than for the older children (4.41 +/- 2.51 months) (P<.003). Two traumatic fixture losses occurred in the younger children, while 4 occurred in the older children. Skin site revision was required in 3 younger children. All children are currently wearing their BAHAs.
Conclusion:
Two-stage BAHA implantation with a prolonged interval between stages yields surgical success in younger children comparable to that routinely observed in older children.
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