The influence of continuous passive motion on joint function of the k nee after arthroscopy / 中华物理医学与康复杂志

ABSTRACT

Objective To study the effect of con tinuous passive motion (CPM) on joint function after arthroscopy in the knee jo int. Methods Arthroscopy examinations and operations were performed in 53 patients. They were divided into study and control groups based on the use or not of CPM immediately in the postoperative period. The cont rol group consisted of 25 patients treated without postoperative CPM and the stu dy group consisted of 28 patients treated with CPM postoperatively. Range of mot ion (ROM) and the comprehensive function score of the knee joint were evaluated preoperatively, at discharge and at three months after operation. Results There were statistically significant differences in the f unction score of the knee joint between the two groups at discharge. The mean f lexion and extension in the study group were 90.64??16.57? and -0.71??3.78 ?, respectively, compared to 69.40??15.17? and -4.32??4.71? in the contro l group. The mean of the comprehensive function score of the knee joint in the c ontrol group were 11.24.compared to 8.89 in the study group. Seventy-five perce nt (21 cases) of the patients in the CPM group and 24% (6 cases)of patients in t he control group had achieved 90? of flexion at the time of hospital discharge. Conclusion CPM had enhanced the therapeutic effects of arthroscopy in the knee joint and shortened the length of stay of the patie nts in the hospital. Further investigation is needed for evaluating the long-te rm effect of CPM.