Undernutrition, Sarcopenia, Sarcopenic Obesity, and Sarcopenic Undernutrition: A Cross-sectional View on Patients Before Total Joint Arthroplasty.

Diagnostic criteria of malnutrition phenotypes have been recently updated. Uncovering the prevalence of these conditions in patients undergoing hip replacement may be crucial in order to apply the most appropriate diagnostic-therapeutic paths to the right patient at the right time. Sixty patients aged between 60 and 85 undergoing elective hip replacement were recruited. Preoperative measures concerning eating behaviors, anthropometry, physical performance, laboratory parameters, and patient reported measures of pain and function were collected, used to make diagnosis, and explored whether they differed based on malnutrition categorization. Patients undernourished were 18.75%, sarcopenic 13.34%, sarcopenic obesity 4.26%, and 8.88% undernourished and sarcopenic. Well-nourished patients ate more cereals and meat, exhibited lower white blood cells but higher lymphocytes, and reported greater hip-related pain. One in three older patients undergoing elective hip replacement was malnourished. Eating behaviors and leucocytes were the discriminating factors between malnourished and well-nourished. It remains to be established whether malnutrition affects outcome after surgery.