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Updated: Feb 11, 2026
06:04
Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
Published on: March 24, 2023
848
Longitudinal Evaluation of Bone-Anchored Hearing Aid Implant Stability Using the Advanced System for Implant
Lindsey Westover1, Gary Faulkner2, William Hodgetts3
1Department of Mechanical Engineering, University of Alberta.
Summary
The Advanced System for Implant Stability Testing (ASIST) shows promise for evaluating bone-anchored hearing aid implant stability over time. Initial stability may vary by surgeon and implant type, with changes observed during the first year post-surgery.
Area of Science:
- Biomedical Engineering
- Audiology
- Orthopedic Surgery
Background:
- Bone-anchored hearing aids (BAHA) require stable osseointegration for optimal function.
- Assessing implant stability is crucial for predicting long-term success and preventing complications.
- Existing methods for measuring implant stability may lack objectivity or longitudinal tracking capabilities.
Purpose of the Study:
- To clinically evaluate the Advanced System for Implant Stability Testing (ASIST) for assessing implant stability in BAHA patients.
- To analyze longitudinal changes in implant interface stability during the first year after surgery.
- To explore correlations between initial implant stability and clinical factors.
Main Methods:
- ASIST measurements (ASIST Stability Coefficient - ASC) were collected from 39 BAHA patients.
- Data collection occurred at surgery and at multiple time points up to 12 months post-surgery.
- Correlations were examined between ASC values and surgeon, patient age, and implant type.
Main Results:
- ASC values ranged from 11.9 to 137.0 (mean ± SD: 31.9 ± 18.0).
- A slight decrease in ASC was observed up to 3 months, followed by an increase by 1 year.
- Significant differences in initial stability were noted between operating surgeons (p<0.05), with a trend for implant types.
Conclusions:
- ASIST demonstrates promising results for the longitudinal evaluation of bone-implant interface integrity in a clinical setting.
- The system allows for objective, patient-specific comparisons of interface properties, distinguishing it from other measurement systems.
- ASIST may aid in identifying factors influencing initial implant stability in BAHA procedures.
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