The passive and active range of knee joint motion in the test group during postoperative @ h to @ weeks were ( @ + / - @ ) degrees , ( @ + / - @ ) degrees , ( @ + / - @ ) degrees , ( @ + / - @ ) degrees , ( @ + / - @ ) degrees and ( @ + / - @ ) degrees , ( @ + / - @ ) degrees , ( @ + / - @ ) degrees respectively , which were higher than ( @ + / - @ ) degrees , ( @ + / - @ ) degrees , ( @ + / - @ ) degrees , ( @ + / - @ ) degrees , ( @ + / - @ ) degrees and ( @ + / - @ ) degrees , ( @ + / - @ ) degrees , ( @ + / - @ ) degrees in the control group .