Clinical Study
Long-Term Effectiveness of Polymerized-Type I Collagen Intra-Articular Injections in Patients with Symptomatic Knee Osteoarthritis: Clinical and Radiographic Evaluation in a Cohort Study
Table 2
Kellgren–Lawrence grading scale. The intraclass correlation coefficient for interobserver was 0.778 () and the intraobserver 0.80 ().
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