Knitting is a process of interlocking loops of yarn or thread to create a fabric. It is often used to make clothing, blankets, and other items. In the context of healing broken bones, knitting refers to the process of using a special device to help the bones heal in the correct position. This device is called an external fixator, and it works by applying tension to the bone fragments to hold them in place while they heal. The external fixator is secured to the bone with pins, and the tension is adjusted as needed to ensure that the bone heals properly.