Uji Reliabilitas the Functional Reach Test untuk Pengukuran KeseimbanganStatis pada Penderita Osteoarthritis Lutut: Reliability Test of the Functional Reach Test for Measuring Static Balance in Patient with Knee Osteoarthritis. J. Sains. Kes. 2024;5(5):615-622. doi:10.30872/jsk.v5i5.443