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Eur J Orthop Surg Traumatol. 2015 Jan;25(1):167-72. doi: 10.1007/s00590-014-1466-4. Epub 2014 Apr 29.

Application of a vibrating device for the prevention of flexion contracture after total knee arthroplasty.

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Department of Orthopaedic Surgery, Clinical Center, University of Debrecen, 98 Nagyerdei krt, Debrecen, 4032, Hungary,


Our research team developed a new, heel support-based static and vibrating complementary treatment method for the prevention of flexion contractures often arising after total knee arthroplasty. We examined the efficiency of the method performing a randomized clinical trial with 144 patients undergoing total knee replacement. Seventy-nine patients were treated for 1 week with a generally used continuous passive motion (CPM) device complemented with our new method, which was based on the application of a static and an alternating heel support. The 65 patients in the control group were treated with only a CPM device as in usual clinical practice. The femoro-tibial angle was measured immediately following surgery, and after 1 week of treatment. At the end of the 1 week treatment, the target extension angle (0° ± 5°) was achieved by significantly more patients with the new combined method. This way the elevated heel rest and the vibrating device proved to be a good adjunct treatment along with the CPM used in routine clinical practice in the first place for the prevention of flexion contractures.

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