To evaluate the safety and effectiveness of PRP injection therapy in the repair of osteoarthritis and periarticular soft tissue injury through a single-center, exploratory clinical study, and to provide a more reliable basis for the treatment of joint injury.

Inclusion Criteria:

• The age range of the participants was 20 to 60 years old. Through a comprehensive clinical and imaging examination, it was conclusively determined that the individuals had knee osteoarthritis or experienced injuries to the cart, and meniscus surrounding the knee joint.
• The preoperative routine tests and examinations revealed no contraindications.
• Revised sentence: "Informed consent of the patient

Exclusion Criteria:

• The platelet count or function exhibits significant abnormalities、Systemic infection transmitted through the bloodstream.
• Prolonged usage of anti-inflammatory drugs and systemic corticoid administration.
• In injection site or damage to the skin.
• Patients with tumors or undergoing radiotherapy and chemotherapy.
• Pregnant or breastfeeding women.
• Individuals with mental illnesses who are unable to cooperate with follow-up procedures.
• Contraindications for MRI、Patients or their families do consent to participate in the study.
• Other circumstances that render participation in the study unsuitable.