Background: The retroauricular (RA) incision has several theoretical benefits compared with the reverse question mark (RQM) incision for decompressive hemicraniectomy (DHC), but limited data comparing the 2 exist.

Methods: Consecutive patients who underwent DHC between 2016 and 2022 and survived ≥30 days at a single institution were included. The primary outcome was wound complication within 30 days (30dWC) requiring reoperation. Secondary outcomes included 90-day wound complication (90dWC), craniectomy size in anterior-posterior (AP) and superior-inferior dimensions, distance from the inferior craniectomy margin to the middle cranial fossa (MCF), estimated blood loss (EBL), and operative duration. Multivariate analyses were performed for each outcome.

Results: A total of 110 patients (RA group: 27, RQM group: 83) were included. The incidence of 30dWC was 1.2% and 0 in the RQM and RA groups, respectively. The incidence of 90dWC was 2.4% and 3.7% in the RQM and RA groups, respectively. There was no difference in mean AP size (RQM: 15 cm, RA: 14.4 cm; P = 0.18), superior-inferior size (RQM: 11.8 cm, RA: 11.9 cm; P = 0.92), and distance from MCF (RQM: 15.4 mm, RA: 18 mm; P = 0.18). Mean EBL (RQM: 418 mL, RA: 314 mL; P = 0.36) and operative duration (RQM: 103 min, RA: 89 min; P = 0.14) were similar. There was no difference in cranioplasty wound complications, EBL, or operative duration.

Conclusions: Wound complications are comparable between the RQM and RA incisions. The RA incision does not compromise craniectomy size or temporal bone removal.

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http://dx.doi.org/10.1016/j.wneu.2023.05.068DOI Listing

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