PLAIN RADIOGRAPHIC GRADING OF PRIMARY KNEE OSTEOARTHRITIS USING THE KELLGREN–LAWRENCE SYSTEM AND ITS CORRELATION WITH CLINICAL SEVERITY: A CROSS-SECTIONAL STUDY (Dr. Chandini Kovvuri1 & Dr. Sandesh Reddy Y2 , Trans.). (2022). Cuestiones De Fisioterapia, 51(3), 476-483. https://doi.org/10.48047/wynvn484