The Effect of Quadriceps Strengthening Exercise and Ultrasound on Improving Functional Activity in Patients with Knee Osteoarthritis. JURNAL KEPERAWATAN DAN FISIOTERAPI (JKF), [S. l.], v. 8, n. 1, p. 164–171, 2025. DOI: 10.35451/1pdfe128. Disponível em: https://ejournal.medistra.ac.id/index.php/JKF/article/view/3095. Acesso em: 6 nov. 2025.