Ball‐Bearing‐Inspired Polyampholyte‐Modified Microspheres as Bio‐Lubricants Attenuate Osteoarthritis

Osteoarthritis, a lubrication dysfunction related disorder in joint, is characterized by articular cartilage degradation and joint capsule inflammation. Enhancing joint lubrication, combined with anti‐inflammatory therapy, is considered as an effective strategy for osteoarthritis treatment. Herein, based on the ball‐bearing‐inspired superlubricity and the mussel‐inspired adhesion, a superlubricated microsphere, i.e., poly (dopamine...