Abstract
International studies have revealed that using continuous passive motion (CPM) equipment as part of a rehabilitation program improves the recovery period and also diminishes the rehabilitation costs by about 50%. This explains the need for conceiving elbow joint rehabilitation equipment to help persons suffering from posttraumatic disabilities. In order to create the best model to meet the patients’ requirements this paper presents two constructive solutions of such equipment and a comparison between their designs. Both achieve the desired movements of the elbow joint: flexion-extension and pronation-supination and are actuated by pneumatic muscles, due to the multiple advantages of pneumatic actuation: low cost, compliance and favorable response to commands.
Highlights
The elbow joint consists of bone, cartilage, ligaments and fluid
Situated between the shoulder and the hand joint, the elbow plays an important role in the functionality of the upper limb
The equipment is modelled based on the kinematics of the human elbow joint (Fig. 2.)
Summary
The elbow joint consists of bone, cartilage, ligaments and fluid. The movement of the elbow requires muscle and tendon input. The elbow joint needs posttraumatic recovery, in order to restore its original function. In case of patients that cannot achieve these movements by themselves, the recommended solution is continuous passive motion. This therapeutic procedure provides regular movement to the joint, without the tensing of the muscles. Research has proved that rehabilitation equipment using this method is useful in the case of patients with posttraumatic disorders, improving the recovery period and reducing the quantity of pain medication. Rehabilitation devices are available nowadays on the market, most of them are electrically driven and have rigid structure This explains the need for developing new elbow rehabilitation equipment
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