Tendon injury,a common clinical disease,usually has scar tissue formed in natural healing with improper functional recov-ery,which seriously affects the motor function and quality of life of patients due to the poor healing ability of tendon itself.Although the ex-isting treatment methods have achieved some results,they still cannot completely restore the original structure and function of the injured tendon.In recent years,exosomes derived from mesenchymal stem cells have been widely used as a new means in the field of tissue repair and regeneration,however,there are few studies on the treatment of tendon injury by mesenchymal stem cell exosomes,and the specific mechanism is not fully understood.In this review,the research progresses of different mesenchymal stem cell derived exosomes on tendon injury repair and related tissue engineering techniques were reviewed,providing theoretical support for the clinical treatment and applied research of tendon injury.
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