Abstract
Degenerative diseases significantly reduce the quality of human life. Non-invasive treatments are used in the initial stages of osteoarthritis (OA). Total knee arthroplasty is used in the late stages of osteoarthritis of the knee joint. Non-invasive methods based on mechanical action are also used for the rehabilitation of a patient after arthroplasty. This paper presents numerical models of the knee joint with degenerative OA changes and arthroplasty. Using these models, a computational study was made of the influence of the intensity of shock-wave exposure on the conditioning for the regeneration of bone and cartilage tissues. Based on the modeling results, it was found that in the knee joint with degenerative OA changes, conditions for the regeneration of cartilage and meniscus tissues were fulfilled under medium and high-intensity loading. Under high-intensity loading (up to 0.9 mJ/mm2), the stress level was significantly below the ultimate value required for fracture. At knee arthroplasty, the conditions for bone tissue regeneration around the tibia component are fulfilled only under high-intensity loading.
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