Abstract
Purpose: To compare the effectiveness of one intra-articular injection of polyacrylamide hydrogel (Arthrosamid®) with that of one injection of hyaluronic acid (Synvisc-One®) in subgroups of participants based on age, BMI or Kellgren-Lawrence (KL) grade at baseline by assessing changes from baseline in transformed WOMAC pain subscale scores (0-100 score where 100 was worst).
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