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Custom-made hydroxyapatite for cranial repair in a specific pediatric age group (7–13 years old): a multicenter post-marketing surveillance study

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Abstract

Background

CustomBone Service (CBS) is a patient-specific, biocompatible, and osteoconductive device made of porous hydroxyapatite, indicated for cranial reconstruction in adults and children. Adult literature data report a failure rate of about 8%. The aim of this Post-Marketing Surveillance study is to verify the hypothesis that CBS in children aged 7–13 years old shows a failure rate not superior to adults.

Materials and methods

Inclusion criteria were age at implantation ranging 7–13 years old, with at least 1 year elapsed from the date of surgery. The degree of satisfaction of surgeons and patients was assessed.

Results

Data about 76 implants in 67 patients (M:F = 41:26) were obtained from 28 centers across 7 European countries. The mean age at surgery was 10.03 ± 1.72 years, with age stratification almost equally distributed. Fifty-nine subjects received one CBS, 7 subjects two and one subject received three CBS. Main etiologies were trauma (60.5%), malformation (11.8%), bone tumor (10.5%), and cerebral tumor (7.9%). Main indications to CBS were decompression (47.4%), autologous bone resorption (18.4%), tumor resection (11.8%), malformation (9.2%), comminuted fracture (5.3%), and other materials rejection (5.3%). Main implantation sites were fronto-parieto-temporal (26.3%), parietal (23.7%), frontal (11.8%), fronto-temporal (10.5%), and parieto-temporal (7.9%). CBS was chosen as first line of treatment in 63.1% of the cases. Mean follow-up was about 36 months. Eleven adverse events (14.5%) were reported in nine devices. Five CBS required explantation (three cases of infection, one fracture, and one mobilization). Failure rate was 6.58%, which is statistically not superior to the explantation rate recorded in adults (two-sided 95%, CI 2.2–14.7%). Satisfaction of surgeons and patients was of about 95%.

Conclusion

CBS is a safe and effective solution for cranial repair in pediatric patients. In particular, over the age of 7, CBS shows a rate of failure as low as in adults.

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Correspondence to Paolo Frassanito.

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Conflict of interest

Paolo Frassanito received a grant from Fin-ceramica Faenza S.p.A.

Angelo Nataloni and Valentina Canella are fully employed at Fin-Ceramica Faenza S.p.A.

No competing financial interests exist for the remaining authors.

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Frassanito, P., Massimi, L., Tamburrini, G. et al. Custom-made hydroxyapatite for cranial repair in a specific pediatric age group (7–13 years old): a multicenter post-marketing surveillance study. Childs Nerv Syst 34, 2283–2289 (2018). https://doi.org/10.1007/s00381-018-3905-8

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  • DOI: https://doi.org/10.1007/s00381-018-3905-8

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