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  • Title: [Experiences with an ankle joint motion device in prevention of thrombosis in patients after total endoprosthesis knee replacement].
    Author: Rader CP, Kramer C, Hendrich C, König A, Gohlke F, Eulert J.
    Journal: Z Orthop Ihre Grenzgeb; 1998; 136(5):467-70. PubMed ID: 9823645.
    Abstract:
    PURPOSE: Thromboprophylaxis with heparins after total joint replacement is well accepted. The aim of this prospective randomized study was to evaluate the thrombo-prophylactical efficiency of an ankle joint moving device (Artroflow) after total knee arthroplasty. METHOD: In this prospective study 160 patients were examined who had undergone total knee arthroplasty (TKA). All of the 160 patients received Enoxaparin 1 x 40 mg subcutaneously per day. In addition to this, 90 patients received Artroflow three times a day for 30 minutes. The passive movements of the ankle joint lead to an emptying of the foot and calf veins. Except for the daily routine, we performed physical examination and ultrasound in colour, compression and duplex technique one day before surgery and at the 7th and 14th day after surgery. If a thrombosis was suspected, an ascending phlebography was carried through. RESULTS: The overall thrombosis rate was 6.3% (n = 10). 11.4% (n = 70) deep vein thromboses (DVT) could be observed in the group without Artroflow. Thrombosis occurred in the group with Artroflow in 2 cases (2.2%, n = 90). A statistical difference was found between the two patient groups (p < 0.05, Chi-Square-test). One patient was excluded from the study because of pain in the ankle joint at the fourth day of treatment. CONCLUSION: In addition to heparins, this ankle joint moving device can be recommended as a physical way to prevent DVTs in the thromboprophylaxis of total knee arthroplasty.
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