Cao J, et al. - Experts evaluated a novel ultrasound (US) scanning approach in evaluating knee femoral cartilaginous defects, compared with magnetic resonance imaging (MRI, commonly used for knee imaging) and arthroscopy (gold standard). For knee cartilage defects, similar diagnostic performance compared to routine MRI was allowed by the novel US scanning approach. Compared to MRI, US is more accessible, easier to perform, and less expensive, with potential advantages of easier initial screening and assessment of cartilage defects.