human embryonic stem cell derived mesenchymal stem cells like cell for the meniscus injury, and observe the safety of the cells for meniscus injury

Three different dosage of human embryonic stem cell derived mesenchymal stem cells like for meniscus injury patients, and observe the safety of the cells for meniscus injury.

Inclusion Criteria:

• Grade Ⅰ-Ⅱ meniscus injury of knee joint
• The patients who still have the pain of knee joint and/or limitation of the function after accepted 3 months of nonoperative treatment

Exclusion Criteria:

• Recent history of lower limb fractures or intra-articular drug injection
• The patients who have meniscus injury of knee joint need the surgical repair
• The patients who have the severe coagulation disorders, cardiopulmonary failure and so on
• The women who are pregnant or nursing
• There are electronic implants such as pacemakers in the body
• The patients who are infected the HIV, the virus of hepatitis or syphilis
• The patients who are alcoholism or drug user
• The patients who have vestibular and balance disorders
• The patients with severe cognitive impairment who cannot follow instructions to complete the treatment
• The patients who don't sign the informed consent
• The patients who have tumor
• Immunodeficiency patients
• The patients who have congenital or acquired knee malformation
• Patients or researchers who are participating in other clinical trials believe that other reasons are not appropriate for clinical trials