“…Follow-up periods ranged from six weeks [ 34 ] to five years [ 36 ]. All articles reported functional performance outcome measures, of which MSTS was reported most frequently [ 32 – 36 ], followed by TESS [ 31 , 33 ], timed up-and-go (TUG) [ 31 , 33 ], 6-min walk test (6mWT) [ 31 , 33 ] 10-m walk test (10mWT) [ 33 ], Harris hip score (HHS) [ 34 ], a custom-made functional performance scoring system [ 34 ], gait evaluation (including walking speed) [ 36 ], the hospital for special surgery (HSS) knee score [ 37 ], and, last, the number of patients that had been out of their beds for the first time on the third, seventh, and fourteenth postoperative day [ 37 ]. Outcome measures in the category ‘Joint and muscle function’ were reported in four out of seven articles (57%), with knee ROM being reported most frequently [ 31 , 33 , 36 , 37 ], followed by quadriceps strength on the medical research council (MRC) scale [ 31 , 33 ] and isokinetic muscle strength [ 36 ].…”