A crutch is a supportive device used to assist individuals who have difficulty walking due to injury or disability. Typically made of wood or metal, crutches are designed to transfer weight from the legs to the upper body, allowing users to move around more easily. They come in various styles, including underarm crutches and forearm crutches, each serving different needs. Crutches are often used during recovery from injuries such as fractures or surgeries, helping to prevent further strain on the affected area. Proper use and fitting are essential for comfort and effectiveness, making them an important tool in rehabilitation and mobility.