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Advanced Neurology                                       Outcomes of implant usage for depressed skull fractures




            Table 2. Characteristics of included studies and patient demographics
            Study               Study type      Country      Number of   Mean age   Sex   Implant material
                                                            total subjects  (year)  (M/F)
            Wylen et al.,1999 [29]  Case series  United States  32        n/a      27/5   Pericranial graft
            Ebel et al., 2000 [20]  Case series  Germany        2          49      2/0    Pericranial graft
            Marbacher et al., 2008 [7]  Case series  Switzerland  5       32.2     5/0    Titanium mesh
            McCall et al., 2008 [25]  Case series  United States  1        49      1/0    Pericranial graft
            Hewitt et al., 2009 [24]  Case report  United States  1        14      1/0    n/a
            Forbes et al., 2010 [22]  Case report  United States  1        6       1/0    n/a
            Bot et al., 2013 [19]  Case report  Nigeria         1          40      1/0    Methylmethacryalte (PMMA)
            Muderris et al., 2013 [26]  Case report  Turkey     1          45      1/0    Pericranial graft
            Wan et al., 2013 [28]  Case series  China           18         41      11/7   Pericranial graft
            AbdelFatah et al., 2016 [16]  Retrospective cohort  Egypt  87  21      76/11  Pericranial graft
            Sheng et al., 2017 [27]  Case report  China         1          22      1/0    Pericranial graft
            Ballestero et al., 2019 [18]  Case report  Brazil   1          0       1/0    n/a
            Faried et al., 2019 [21]  Case report  Indonesia    1          19      1/0    Pericranial graft
            Hitoshi et al., 2019 [9]  Case series  Japan        2          8       2/0    Titanium mesh
            Eom et al., 2020 [8]  Case series   South Korea     19        50.4     18/1   Titanium mesh
            Haider et al., 2020 [23]  Case report  United States  1        27      1/0    Titanium mesh
            Yang et al., 2021 [30]  Case series  China          2          47      1/1    PEEK
            Anehosur et al., 2022 [17]  Case report  India      1          6       1/0    Titanium mesh
            Total (mean)                                       177        30.77   152/25
            n/a: Not available

            Table 3. Pre‑ and peri‑operative characteristics   Table 4. Post‑operative outcomes
                               Autologous                                         Autologous
            Pre‑operative   Time to   Fracture   Length to     Post‑operative   Length of   Complication   Minimum
            GCS        encounter (days)  location  cranioplasty   GCS       stay (days)  rate    follow‑up time
                                                  (days)                                            (years)
            12.8 (10–15)  1.67 (0–21)  36% frontal  10.27 (0–210)  15       36.3 (7–42)  4.14     1.21 (0.25–2)
                                   33% parietal                Non-autologous
                                   17% occipital
                                   14% temporal                14.74 (10–15)  16.7 (3–75)  3.13%  0.93 (0.20–2.67)
            Non-autologous                                     p-value
            14.8 (8–15)  2.68 (0–45)  68% frontal  16.10 (0–210)  p<0.0001  p=0.0274   p=0.8484    p=0.000796
                                   22% parietal                Overall
                                   10% occipital
                                                               14.95 (10–15)  18.6 (3–75)  4 0.0%  1.15 (0.20–2.67)
            p-value
                                                               All values reported as either means with ranges or sole proportions
            p=0.1570     p=0.4785  p=0.09        p=0.4780
            Overall                                            location revealed a coinciding trend among both cohorts
            13.5 (10–15)  1.9 (0–45)  44% frontal  11.43 (0–180)  of patients, with DSF reconstructions of the parietal and
                                   30% parietal                occipital regions being the second and third most common,
                                   15% occipital
                                   11% temporal                respectively. Interestingly, however, while reconstruction
            All values reported as either means with standard deviations or sole   of the temporal region was conducted in 14% of patients
            proportions                                        within the autologous implant cohort, reconstruction of
                                                               the temporal region among the non-autologous implant
            the non-autologous cohort, versus 36% in the autologous   cohort was not reported in the analyzed patient sample.
            cohort (Table 3). Assessment of variation in reconstruction   As some studies have reported greater occurrences of


            Volume 2 Issue 1 (2023)                         7                          https://doi.org/10.36922/an.247
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