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, 161 (1), 25-31

Defining "Early" Cranioplasty to Achieve Lower Complication Rates of Bone Flap Failure: Resorption and Infection

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Defining "Early" Cranioplasty to Achieve Lower Complication Rates of Bone Flap Failure: Resorption and Infection

Jang Hun Kim et al. Acta Neurochir (Wien).

Abstract

Background: Although cranioplasty (CP) is a frequently performed and simple procedure, complications are common, particularly bone flap resorption and infection. The timing of surgery is as an important contributory factor, but the optimal timing has not been clearly determined.

Objective: We retrospectively investigated bone flap resorption and surgical site infection after CP to determine the optimal timing of surgery for reduction of complications.

Methods: The study enrolled 126 patients who underwent decompressive craniectomy (DC) and subsequent CP. Patients with bone flap resorption or surgical site infection were analyzed as the "complication" group. Receiver operating characteristic curve analysis was performed and the Youden index was used to dichotomize "early CP" and "late CP" groups. Univariate and multivariate survival analyses were performed.

Results: The complication group included 42 patients. The Youden index was used to identify a cutoff value for the DC-CP interval of > 44 days, and this was used to define early (< 45 days) and late (≥ 45 days) CP. Late CP was a significant risk factor in univariate and multivariate Cox regression analyses.

Conclusion: This study showed that early CP before 45 days after DC is associated with a lower rate of bone flap resorption and surgical site infection than late CP.

Keywords: Bone flap resorption; Cranioplasty; Early cranioplasty; Optimal timing; Surgical site infection.

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