Patient: 26 year old female, fell from her bunk at night on June 12, 2012 and fractured the femoral neck of her left leg with osteoporosis. 15 days after surgery at Tianjin Hospital, she was fixed with three nails. Usually she has little discomfort, but recently she feels pain in the area of the femoral neck when lifting and flattening the affected leg. On June 15, 2012, he was operated in Tianjin Hospital and fixed with three nails. Now the leg can be bent and lifted. On the 5th of this month, the fracture line is blurred. Recently, I feel pain in the neck of the femur when I raise and lower the affected leg. I don’t know what to do. Should I continue to practice my leg or rest? I don’t think it’s going to die. This is a common question asked by patients with femoral neck fracture. In addition, many people have the concept of recuperation after surgery, fearing that “after spending so much money on surgery, what if it breaks? In fact, this is a misconception. The purpose of surgery is for early movement, as early as immediately after surgery. Internal fixation provides enough strength to stabilize the fracture and basically meet your early mobility needs. Exercise can prevent many deadly problems, venous thrombosis, limb swelling, bed sores, pneumonia, urinary tract infections, etc. However, there is a rule of thumb that you should only move under non-weight bearing until the fracture has healed. Studies have shown that the hip joint is three times heavier under weight, six times heavier when standing on one leg, and even more when running, so internal fixation with plates and screws alone will not provide stability under weight. For related questions you can read my article “Principles of plate fixation http:///zhuanjiaguandian/chenhua0270_693019998.htm”. In addition, there are some common questions, I answer them one by one, I hope it will help you in your lower limb fracture rehabilitation. 1. Is the necrosis rate of femoral neck fracture high? The results of a large sample of postoperative follow-up of femoral neck fractures are 33% of fracture healing, 33% of healing with head necrosis and 33% of bone nonunion. 2.Why internal fixation surgery if the head necrosis and failure rate are high? Internal fixation surgery is a minimally invasive surgery, the operation time is short, the purpose of the surgery is only to create a chance for fracture healing, especially for young people, in case the fracture does not heal before considering fracture replacement or fusion. If the joint replacement is carried out prematurely, he is bound to have to undergo several joint revision surgeries; while for an elderly person over 65 years old, we will directly carry out joint replacement surgery. 3.What exercises can be performed above the internal fixation surgery? Before the fracture heals after surgery, you can only do the isometric muscle contraction exercise of the joint and limb at rest, commonly known as “shitting and clenching the fist to make a secret effort”. You can turn over, stay in a flexed hip and knee position, or use a walker to get down to the ground if you are lying on your side, but you cannot step on the ground and put weight on the affected limb. 4. What are the movements that I absolutely cannot do? You cannot do straight leg raising until the fracture has healed. Give you a little data to understand, the hip joint withstand the force, straight leg raise 1.5 times the weight, single-leg stand 2.5 times, double-leg stand 0.5 times, run is 5 times the weight. You can imagine how much stability a few nails can provide to the fracture break. There is only one principle, as long as the fracture site of the femoral neck is not strained to create a quiet environment for the fracture to heal.