• Alejandro Gormaz-Veloso, Rodrigo Muñoz-Cofré, and William Cantillana Lermanda.
• Servicio de Medicina Física y Rehabilitación, Hospital El Carmen de Maipú, Santiago, Chile. E-mail: alegormaz2@gmail.com.
• Medicina (B Aires). 2022 Jan 1; 82 (4): 550-557.

AbstractGonarthrosis is a highly prevalent disease in older adults. The objective of this research was to identify changes in quadriceps muscle strength and their impact on the functionality of total knee replacement (TKA) operated patients undergoing kinesitherapy at Hospital El Carmen de Maipú (HEC). All TKA operated patients were measured, pre and post intervention, maximum isometric strength (MIF), Time Up and Go, Standing and sitting test, Unipodal support and the WOMAC scale. The operated and contralateral MIF is higher in flexion and extension when comparing both genders (p < 0.0001; p < 0.0001, respectively). In the up and go and the standing and sitting test, performance was significantly higher for males than for females (p = 0.001; p = 0.007, respectively). In the WOMAC, there were significant differences before and after the intervention in men and women (p < 0.0001; p < 0.0001, respectively). Patients with a body mass index (BMI) > 30 kg/m2 are 3 times less likely [OR = -3.498; CI (0.062-1.067)] to receive treatment in a period of less than 50 days. On the other hand, injuries to the non-dominant (left) knee have a 4 times greater chance of stay in treatment in less than 50 days [(OR = 2.71; CI (1.000-16.252)]. There was an increase in MIF of the knee treated post-intervention, in both genders. Functionality increased in men and women, after the intervention.

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