Randomized, double blinded comparative trial of intradermal injections of lignocaine versus N-saline around the knee to relieve pain in patients awaiting total knee replacement.

Objectives: We report a randomized, double-blinded comparative study assessing the efficacy of local anesthetic with N-saline intradermal blocks around the knee to reduce pain and improve patient satisfaction while waiting for a total knee joint replacement.

Methods: Patients were offered involvement in this study while on the hospital waiting list for a knee replacement. Eligible patients, after completing a prestudy assessment, received an average of 6.