Minimally invasive orthopedic surgery includes many kinds of procedures, such as minimally invasive arthroscopic surgery or minimally invasive intramedullary nailing surgery or even minimally invasive plate insertion surgery, and the exact length of time depends on the severity of the underlying disease in addition to the minimally invasive surgery method itself. The more common clinical cases of lumbar disc herniation take about 1.5 hours for minimally invasive laminectomy, while a simple arthroscopic clearance can be solved in about half an hour. If ligament reconstruction or meniscus repair is involved, the surgery time is much longer and takes about 2 hours. Minimally invasive procedures such as internal fixation of fractures with intramedullary pins or plate insertion may take 2-3 hours for some fractures with significant misalignment. Therefore, the time required for minimally invasive surgery does not depend on the condition of the disease.