Knee joint biomechanical property testing and evaluating device

Abstract

The invention relates to a knee joint biomechanical property testing and evaluating device. The knee joint biomechanical property testing and evaluating device comprises a frame module, a joint fixing module, a knee joint module, a joint-bending driving module and a loading module. The joint fixing module is fixed to a frame base plate of the frame module. The bottom of the knee joint module is connected with the joint fixing module, and the top of the knee joint module is fixedly connected with the joint-bending driving module. The joint-bending driving module is fixed to the top end of the frame module. The loading module is mounted on the frame module, and loading of the knee joint module is achieved. According to the knee joint biomechanical property testing and evaluating device, the bending angle of each knee joint is adjusted, so that the motion state of lower limb joints of a human body is simulated; and external force is loaded, and the stress states, generated at different bending angles of the knee joints, of interfaces between bionic bone tissues and prostheses are tested. The knee joint biomechanical property testing and evaluating device has the beneficial effects that the structure is simple, flexible in movement, convenient to test and precise in testing; and the joint module is convenient to replace.

Description

technical field

[0001] The invention relates to an experimental device for testing biomechanical properties, in particular to a device for testing and evaluating biomechanical properties of a knee joint. Background technique

[0002] Osteoarthritis has a high incidence rate in middle-aged and elderly people, and its main manifestations are cartilage degeneration and wear, and at the same time, osteophyte is formed at the attachment of ligaments on the joint edge and the reactive hyperplasia of subchondral bone, which causes joint pain and stiffness deformity and dysfunction. Knee replacement is an orthopedic surgery for the treatment of severe knee joint lesions. The tibial and femoral diseased parts are osteotomized and replaced with artificial prostheses to relieve the pain of the knee joint patient and restore the patient's knee joint function. However, some patients suffer from complications of knee replacement surgery, such as postoperative lower limb extension difficu...

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