Randomization and blinding
TKA
Participants were randomly assigned into one of the two groups either GR or MR with a ratio of 1:1 using a computerized stratified block randomization sequence (block of 4). When a subject fulfilled all study criteria and was enrolled, allocation took place. Allocation concealment was performed using sequentially numbered, opaque, sealed envelopes (SNOSE) prepared by the independent person that was not relevant to this study. Participants also remained blinded to the type of prosthesis throughout the study. The two surgeons performing TKA were informed of participant assignment 1 month prior to surgery and had no role in patient assessment. The blinded study coordinator was accountable for gathering of outcome measures.