Abstract:

BACKGROUND: Preliminary studies on continuous passive motion mainly concentrated on improving the range of motion and relieving the joint swelling.
OBJECTIVE: To investigate the effect of continuous passive motion on blood coagulation condition and deep vein thrombosis of the lower extremity in patients after total knee joint replacement．
METHODS: Eighty patients with total knee joint replacement were randomly divided into experimental group and control group. Patients in the control group were treated only with traditional way to help the patient move the knee by the nurse and combined with active functional exercise; patients in the experimental group were treated with continuous passive motion beginning at 24 hours postoperatively, and were also treated with traditional way to help the patient move the knee by the nurse. Cruor comprehensive index and incidence rate of deep vein thrombosis of the lower extremity were recorded at 2 weeks after replacement.
RESULTS AND CONCLUSION: At 2 weeks after replacement, cruor comprehensive index was 2.66±1.04 and 3.98±1.36 in the experimental group and the control group, and the incidence rate of deep vein thrombosis of the lower extremity was 2.5% and 17.5% in the experimental group and control group. The results showed that the cruor comprehensive index and incidence rate of deep vein thrombosis of the lower extremity in the experimental group were lower than those in the control group (P < 0.05). Early application of continuous passive mobilization after total knee joint replacement has obvious advantages in improving the cruor comprehensive index and blood coagulation condition, and it has positive effect on protecting the deep vein thrombosis of the lower extremity.