The passive and active range of knee joint motion in the test group during postoperative 24 h to 2 weeks were ( 30.67 + / - 3.65 ) degrees , ( 39.17 + / - 3.96 ) degrees , ( 47.83 + / - 4.86 ) degrees , ( 93.67 + / - 7.30 ) degrees , ( 107.67 + / - 7.51 ) degrees and ( 29.83 + / - 5.33 ) degrees , ( 78.33 + / - 8.24 ) degrees , ( 95.17 + / - 5.94 ) degrees respectively , which were higher than ( 28.67 + / - 3.92 ) degrees , ( 36.83 + / - 4.25 ) degrees , ( 45.17 + / - 5.17 ) degrees , ( 89.83 + / - 7.25 ) degrees , ( 103.17 + / - 7.37 ) degrees and ( 24.17 + / - 10.26 ) degrees , ( 73.83 + / - 9.07 ) degrees , ( 91.33 + / - 7.42 ) degrees in the control group .