Performance outcomes with laser-ablated BHX implants for bone-anchored hearing procedures - 3-month data from a multi centre study of 50 patients
Bibliographic record
Abstract
Objectives: Bone anchored hearing surgery is a well-recognized procedure in paediatric patients and has been shown to have successful surgical and audiological outcomes.Traditionally a two-stage approach has been employed for bone anchored hearing surgery in children, where the flange fixture with a cover screw is inserted and after allowing time for osseointegration (3-6 months), a hole is punched in the skin exactly over the flange fixture, cover screw removed, and the abutment is attached.Recently, one-stage surgery in which a pre-mounted abutment on an implant is inserted in the bone has been successful in paediatric patients and has been implemented into clinical practice.The purpose of the prospective study is to collect surgical and audiological data from paediatric patients and increase the knowledge on the long-term performance of one-stage bone anchored hearing surgery in the paediatric population.Methods: Pediatric patients undergoing one-stage surgery using the Ponto BHX implant system at The James Cook University Hospital (Middlesbrough, UK) were recruited for a 24-month prospective followup study.Surgical and audiological outcomes were assessed prior to and during surgery, as well as at 6 follow-up visits throughout the 24-month follow-up period.The primary outcome of the study was implant stability, measured by Implant Stability Quotient (ISQ), after 6 months compared to at surgery.Results and conclusion: In total, 17 implants were placed during the study (one bilateral and 15 unilateral patients).A sleeper implant was placed approximately 10mm from the centre of the primary implant and a cover screw placed as backup in case of implant failure.The patient cohort consisted of 6 girls and 10 boys aged 7-14 years.Preliminary 6-month data show good implant stability, with no implant losses and a 6-point increase in mean ISQ between surgery and 6-month follow-up.Soft tissue was reported to heal well, and no major complications or adverse events were reported.In conclusion, preliminary 6-month data from this cohort suggest safe and reliable outcomes with the one-stage surgery in a pediatric population.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.001 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".