1.What is a bunion? Bunion, also known as “big orphan disease”, is a foot deformity in which the bunion deviates outward beyond the normal physiological angle, and is one of the most common lesions of the forefoot. It is generally believed that a bunion deflection of more than 15° is a bunion deformity. However, some people have a bunion that exceeds this angle without symptoms, while others have pain in the bunion area even though the bunion angle is less than 15°. After the bunion is turned, the bunion forms on the inside of the 1st metatarsal head and rubs against the shoe surface, forming a bursitis, called a bunion. 2.What is inversion of the knee? Internal derangement of the knee is a condition in which the distal end of the knee joint deflects medially when the lower limb is straightened, causing the knee to project laterally. It is mainly due to deformation of the tibia, but sometimes also involves the femur. The main symptoms and signs are: (1) the affected limb may have pain, which is aggravated when walking with weight; (2) the affected knee may have swelling, which may be aggravated after activity; (3) the affected knee may have different degrees of dysfunction; (4) there may be pressure pain around the affected knee; (5) walking with a waddling gait, with the toes facing inward, and limping with unilateral deformity; (6) inversion deformity of the affected knee, with both lower limbs standing straight, the two ankles touching each other, and the two knees separated. The distance between the two knees indicates the degree of inversion; (7) the deformity is mostly in the lower leg, which can occur in the upper or lower part of the tibia, with the following 2/3 being more common, often accompanied by anterior arch and internal rotation. 3.What should I do after ankle sprain? Ankle sprains are very common clinically, and fractures and dislocations can be treated effectively by both the patient and the doctor. However, simple ankle ligament injuries without fractures or dislocations often do not attract the attention of patients or even doctors, and are not treated effectively at an early stage, resulting in ankle instability and habitual “fractured foot”, which eventually causes ankle pain. Therefore, after ankle sprain, do not press and rub or soak it by yourself, but apply some simple brakes first, and then go to a specialist hospital as soon as possible for effective consultation and treatment. 4.What is the problem of “hard callus” on the bottom of the foot? Many people, especially lesbians who often wear high-heeled shoes often appear on the soles of the feet some “hard calluses” and cause pain, which is medically known as the formation of the “corpus callosum”. There are often the following causes (1) foot deformity, foot deformity, generally caused by the collapse of the metatarsal head; (2) the shoes worn too tight, and repeated friction with the foot skin, local skin abnormalities; (3) skin diseases such as local warts, thickening of the stratum corneum. Once the foot callus is a signal that your foot has been abnormal, you should pay attention to it, go to the hospital for diagnosis and treatment, and take the appropriate treatment according to the cause of their own morbidity. Many people like to have a pedicure, in fact, pedicure treatment only solves part of the surface problem, the root cause of its occurrence callus is not treated, sometimes pedicure will cause infection, skin breakdown and other problems, so we advise you to be cautious, especially patients suffering from diabetes.