Table 1 Maximal knee joint angle reached during the stepping-down performance of the leading leg and of the supporting leg during the swing phase.

Leading leg

Controls

Patients before surgery

Patients after surgery

Right / Sound

45.4° +/-4.7

49.2° +/-10.5

58.3° +/-23.4

Left / arthritis / operated

46.2° +/-7.3

33.7° +/-14

40.9° +/-12

Supporting leg

Controls

Patients before surgery

Patients after surgery

Right / Sound

79.9° +/-10

81.2° +/-6.3

67.3° +/-29.1

Left / arthritis / operated

82.7° +/-4.4

55.3° +/-14

52° +/-21.2