Osteoarthritis (OA) of the knee joints (KJ) has a high social significance and is therefore a relevant pathology for scientific research. The authors have proposed an original hydraulic theory for the pathogenesis of OA in KJ. This approach is based on the notion of primary mechanical damage to the internal ligamentous structures and synovial membrane accompanied by posttraumatic edema, synovial hypervolemia, and hypertension. The authors demonstrated that regular physical activity at all stages of the disease is pathogenetically justified and allows the patient to improve lymphatic and venous outflow and thus resist increasing fibrosis. Improved arterial blood flow will reduce tissue hypoxia. Any type of symptom-modifying therapy can be harmful because it reduces the protective role of pain reflexes in protecting the KJ from excessive loads, leading to injury. The necessity of maintaining a walking speed of more than 4.3 km/h with an increase in cadence is emphasized from the perspective of reducing static stress during walking and extending life expectancy.
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