A systematic review of the effect of regional anesthesia on diagnosis and management of acute compartment syndrome in long bone fractures.

PURPOSE: Peripheral nerve blockade (PNB) is a useful tool for pain control in the perioperative period. However, there are significant concerns about the use of PNBs following acute orthopaedic trauma due to the theoretical risk of masking acute compartment syndrome (ACS). This study aims to systematically review the effects of PNBs on diagnosis of ACS following long bone fractures.
METHODS: A systematic review of the literature was conducted according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines.
RESULTS: Six studies, all of which were single-patient case reports, met criteria for inclusion in this review. Two studies reported a delay in diagnosis of ACS in the setting of PNB use, while four studies did not.
CONCLUSIONS: Due to the low incidence of ACS, there is a paucity of literature available on ACS following PNB use in the setting of orthopedic trauma. There is no consensus in the literature about the safety of PNB use in the setting of acute long bone fractures, and this review could draw no conclusions from the literature, as the level of evidence is limited to case reports. PNBs should be administered to orthopedic trauma patients only in strictly controlled research environments, and surgeons should be highly cautious about using PNBs for orthopedic long bone fractures, particularly in cases at increased risk for developing ACS.