Design and fabricating of continuous passive motion (CPM) machine for physical knee pain therapy

• Main Authors: Hamdan, Wissam Kadhim, Ali, Saad Mahmood, Saleh, Zaid Hayder, Awad, Dalia Mohammed, Tareq, Feryal Zeyad, Radi, Tuqa Mohammed
• Format: Conference Proceeding
• Language: English
• Subjects: Anesthetics; Human motion; Joints (anatomy); Knee; Musculoskeletal system; Pain; Paralysis; Rheumatic diseases; Surgery; Three dimensional printing
• ISSN: 0094-243X; 1551-7616
• DOI: 10.1063/5.0182136

Diseases of the human musculoskeletal system are increasingly common, especially those affecting the knee joint, for various reasons, including those that result from aging of the human body or rheumatic disease. Continuous passive movement (CPM) that is performed by an external force is used to rehabilitate the knee and is one of the assistive techniques to restore its functions. Early knee motion recovery therapy has a positive effect on reducing postoperative pain, hospitalization duration, and knee swelling. In the current work, efforts have been made to study and discuss the current issues related to the components, designs, fabricating, and methods of treatment of continuous passive motion (CPM) machine. Review and study the latest research and studies related to the design of continuous passive motion (CPM) machine and the related study of lower limbs diseases, and the advantages and complications of the process. The design, development, and fabrication of a simple, lightweight continuous passive motion (CPM) machine as an affiant way to help ease knee pain through physical therapy was implemented. The design and manufacture of several device parts included the use of the mechanical design program ANSYS 18.0. and 3D printing processes were implemented. The efficiency of the produced (CPM) machine with the three speeds provided by the device was tested and examined on several patients with paralysis as a result of strokes, risk after knee surgery, and severe pain in the lower extremities. The device showed a great help to patients in reducing pain, and the risk of DVT after knee surgery in increasing a joint’s range of motion, reducing the length of hospital stays, and reducing the need for manual movement of the joint while people are under anesthetics.