O-shaped leg correction surgery may have sequelae, mainly including leg nerve damage, poor leg appearance and fracture and other conditions. 1. Nerve damage of the leg: corrective surgery needs to cut the skin and muscle to correct the displaced bone, during the operation, it may damage the nerves of the leg, causing corresponding discomfort symptoms, such as leg pain, numbness and weakness of the leg and other symptoms. 2. Poor leg appearance: when correcting the displaced bone, it is necessary to remove part of the bone, which may cause the left and right legs to be unequal, resulting in the situation of short and long legs, and at the same time, the surgical wound may be left behind, resulting in unsightly legs. 3. Fracture: Surgery causes some damage to the original bone, which will easily cause the loss of calcium in the bone and decrease the bone density, resulting in easy fracture of the bones of the lower limbs. Although there is a certain risk of surgery, but now the surgery technology has been very mature, the probability of sequelae is low. Surgery that has to be done can still be done safely. When you find O-shaped legs, you should go to a regular hospital in time and receive standardized treatment under the guidance of a professional physician, so as not to delay your condition.