“…The "outcome assessment" section scored adequately in 20 articles (64.5%). Seventeen studies [9, 19, 21, 24, 26, 32-34, 36-40, 42] used the modified Harris hip score, four studies the Merle d'Aubignè scale [3,18,25,43], and five studies the WOMAC Index score [25,27,29,30,41]. The non arthritic hip score (NAHS) was used in four studies [9,23,28,33], the hip outcome score was administered in two studies [22,44], while VAS rating [26] and combined VAS and SF-12 criteria [19] were used in one study each.…”