Table 5 Preoperative and regular postoperative recording of KOOS subscales scores, and a variety of PROMs (OKS, OKS-APQ, VAS Health, and VAS pain) over 5 years

41.2 ± 18.4 [37.7, 44.8]

59.1 ± 18.9 [55.1, 63.1]

60.9 ± 17.4 [57.5, 64.4]

66.3 ± 18.9 [62.1, 70.6]

67.1 ± 25.0 [59.2, 75.1]

25.1 ± 19.8 [19.7, 28.6]

43.1 ± 18.3 [39.5, 46.6]

63.7 ± 21.8 [59.1, 68.2]

68.7 ± 19.8 [64.8, 72.7]

73.3 ± 19.3 [69.0, 77.6]

70.7 ± 24.4 [63.0, 78.5]

30.2 ± 21.4 [21.9, 31.5]

51.4 ± 23.5 [46.9, 56.0]

69.4 ± 21.2 [64.9, 73.8]

74.4 ± 20.9 [70.2, 78.5]

78.1 ± 20.2 [73.6, 82.7]

72.1 ± 28.0 [63.2, 81.0]

25.8 ± 21.9 [16.8, 26.6]

22.8 ± 21.0 [18.6, 27.0]

38.5 ± 24.8 [33.2, 43.8]

41.5 ± 29.1 [35.7, 47.3]

48.6 ± 30.3 [41.7, 55.6]

40.3 ± 33.7 [29.5, 51.0]

25.8 ± 31.3 [17.5, 31.9]

17.6 ± 15.3 [14.5, 20.6]

38.1 ± 24.0 [33.1, 43.2]

46.3 ± 28.1 [40.7, 51.9]

50.3 ± 27.1 [44.1, 56.6]

47.7 ± 31.5 [37.7, 57.8]

32.7 ± 27.9 [23.1, 35.6]

41.7 ± 18.3 [38.2, 45.2]

62.5 ± 18.6 [58.6, 66.4]

64.7 ± 19.4 [60.9, 68.5]

69.5 ± 19.4 [65.1, 74.0]

66.9 ± 25.0 [59.0, 74.9]

27.8 ± 21.2 [20.2, 29.8]

22 ± 9.6 [20.1, 23.8]

31.6 ± 10.7 [29.5, 33.8]

33.8 ± 10.9 [31.7, 35.9]

35.4 ± 10.2 [33.1, 37.7]

35.1 ± 11.4 [31.5, 38.7]

13.4 ± 9.9 [8.6, 13.0]

5.6 ± 7.1 [4.2, 7.0]

14.4 ± 10.7 [12.2, 16.6]

15.2 ± 11.0 [13.0, 17.4]

14.8 ± 10.7 [12.4, 17.3]

15.6 ± 11.7 [11.9, 19.3]

9.2 ± 10.6 [6.4, 11.1]

70.9 ± 23.5 [66.3, 75.5]

75.3 ± 16.7 [71.9, 78.6]

79.8 ± 15.5 [76.7, 82.9]

77 ± 18.0 [72.9, 81.1]

74.8 ± 24.3 [66.8, 82.7]

6.1 ± 23.8 [3.1, 13.9]

43.1 ± 19.4 [38.5, 47.7]

24 ± 17.7 [18.9, 29.1]

26.8 ± 20.2 [21.4, 32.2]

26.1 ± 27.8 [16.8, 35.5]

27.7 ± 20.5 [17.0, 38.4]

−17 ± 30.8 [−32.2, −15.7]

60.2 ± 26.2 [55.0, 65.4]

35.7 ± 24.4 [30.7, 40.8]

31.8 ± 23.5 [27.1, 36.5]

26.7 ± 24.4 [21.1, 32.3]

31.5 ± 29.0 [22.3, 40.7]

−33.5 ± 33.2 [−36.7, −21.8]