Search for: [Abstract = "Introduction\: Osteoarthritis of the hip joint is a chronic disease characterized by gradual degenerative changes in both the joint and muscles, causing structural and functional disorders. The muscle system, which under normal conditions provides the necessary support for the joint, can be atrophied as a result of pain and reduced biomechanical abilities of the joint. Aim\: The aim of the study was to assess the bioelectric activity of hip muscles and the functioning of patients with advanced hip degenerative changes before and after surgery treatment. Study sample\: The study involved 49 randomly selected women and men aged 40\-82 years, qualified for total hip arthroplasty due to the presence of advanced degenerative changes in one of the hip joints. The criterion for inclusion was the absence of permanent damage to the locomotor system, allowing independent movement and the assessment of degenerative changes in the X\-ray image using the Altman scale \(≥ II°\). The assessment of the second hip joint showed no advanced radiological changes \(0° or I°\) and was a control group. The exclusion criteria were advanced, two\-sided degenerative changes in the hip joints, previously undergone total hip arthroplasty procedures and significant balance and self\-movement disorders. Methods\: The clinical examination included the analysis of muscle activity of both hip joints \(gluteus medius, gl"]
