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Disturbingly high fracture rate of STRATOS bars in pectus corrections.

OBJECTIVES: Several procedures have been described to correct pectus excavatum and carinatum. We have used a modified Ravitch procedure (STRATOS titanium bars) for patients who were unsuitable for the minimally invasive Nuss procedure. The operation produced excellent cosmetic results, but we have noted several fractures and displacements of the STRATOS bars.

METHODS: We reviewed all our STRATOS patients since first use in 2009 until 2014. We collated the following data of each patient: diagnosis, severity of pectus deformity, comorbidity, previous operations for pectus, age at bar implantation, the number of bars implanted and duration of implantation. Patients with severe comorbidity were excluded.

RESULTS: Between 2009 and 2014, 39 patients were treated for pectus deformities using the STRATOS bars. Twelve of 39 patients (31%) were identified as having bar(s) broken before removal. There were no significant differences between patients with fractured bars and those without, except for the number of bars implanted (P = 0.016).

CONCLUSIONS: This incidence of bar fracture is unexpectedly high, although the literature on this topic is sparse. The high fracture rate is alarming, because of its unpredictability and lack of clear aetiological factors. The operation is done (largely) for psychosocial and cosmetic reasons, and therefore, we must have complete confidence in the quality of the bars used in teenage pectus patients. We raise the issue to warn other units and encourage them to report bar fracture rates.

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