Adductor Canal Block Versus Intra-articular Steroid and Lignocaine in Knee Osteoarthritis Pain Management

A prospective, single blinded interventional study will be conducted in the Rehabilitation Medicine Clinic, University Malaya Medical Center for a duration of 1 year. Eligible subjects will be enrolled from all referrals of chronic knee osteoarthritis, following computer-generated randomization they will be allocated to either Adductor Canal Block (intervention) or Intra-articular Steroid and Lignocaine (control) groups. The assessor is blinded to the intervention received, which will be performed by an experienced interventionist, not participating in randomization or data collection and analysis. Demographics of participants, duration of symptoms, Numerical Rating Score (NRS) pain score and Knee Injury and Osteoarthritis Outcome Score (KOOS) questionnaire score will be recorded prior to injection, 1 week, 1 month and 3 months post injection. Mann-Whitney U tests and Chi-Square test of association will be used as appropriate to compare groups at baseline. Numerical Rating Scale (NRS) pre and post intervention will be analyzed using paired t-test. Functional outcome and Quality of Life (QoL) subset of Knee Injury and Osteoarthritis Outcome Score (KOOS) Questionnaire pre and post intervention will be analyzed using paired t-test as well