髌骨的背侧有一层薄薄的关节软骨，有助于髌骨沿着股骨前侧进行向上与向下的移动。

The back of the patella is lined with a thin layer of cartilage known articular cartilage. This layer helps the patella track up and down along the front of the femur.

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髌骨的背侧有一层薄薄的关节软骨，有助于髌骨沿着股骨前侧进行向上与向下的移动。

The back of the patella is lined with a thin layer of cartilage known articular cartilage. This layer helps the patella track up and down along the front of the femur.

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