Evaluation of trends in continuous peripheral nerve block utilization for total knee arthroplasty within and outside the Veterans Affairs Healthcare System.

Acute pain after total knee arthroplasty (TKA) may be moderate to severe for over a week and may lead to chronic pain.[1][1] Continuous peripheral nerve block (CPNB) techniques have been recommended by guidelines as a non-opioid modality to provide titratable pain relief of extended duration.[2][2]