Palpation without pulmonary artery closure

Posterior condylar articulation: The patellar cartilage surface is uneven after the patella cartilage is softened and exfoliated. When the knee joint moves, the posterior condyle can produce rough articulation. The characteristic of this convoluted articulation occurs when the knee joint moves to a fixed angle Repeated and unchanged for many times, there are few chances for the twisted pronunciation caused by rough and uneven cartilage friction, but many authors think that the rough twisted pronunciation that appears at a fixed angle later is meaningful for the diagnosis of patellofemoral cartilage injury .

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