1. How did minimally invasive total knee arthroplasty evolve? Minimally invasive total knee arthroplasty emerged in the 1990s and has developed over the past 20 years to become a mature surgical technique with clear results. It seeks to achieve shorter recovery times and better surgical outcomes with smaller surgical incisions and less systemic reactions. 2. What are the characteristics of minimally invasive total knee arthroplasty? Compared to traditional total knee arthroplasty, minimally invasive total knee arthroplasty has the following features: (1) short surgical incision length, 8-9 cm on average (14-16 cm on average for traditional surgery); (2) early functional movement of the knee after surgery and better recovery of joint function; (3) less pain and less surgical bleeding; (4) shorter hospital stay up to 9 days and lower medical costs. 3. Which patients can undergo minimally invasive total knee arthroplasty? (1) Patients who are overly obese with a body mass index BMI ≥ 30; (2) Patients with severe osteoporosis; (3) Patients with severe inversion, valgus or flexion deformity of the knee; (4) Patients with a history of previous trauma or surgery related to the knee.