Purpose: The treatment of choice for chronic subdural hematoma (CSDH) has been established as burr-hole trephination with drain insertion; however, controversy remains over the best place for the drainage catheter. In this study, we compare the safety and efficacy of a subperiosteal drain (SPD) with that of a subdural drain (SDD) after one burr-hole trephination for CSDH.
Methods: This retrospective and comparative study includes all CSDH patients treated with burr-hole trephination at our institution between January 2015 and December 2019.