Fracture filling is a process used to repair cracks or breaks in materials, such as rocks or bones. This technique involves using a substance, often a resin or adhesive, to fill the gaps created by the fracture. The goal is to restore the structural integrity and strength of the material, making it usable again. In geology, fracture filling can occur naturally when minerals seep into cracks in rocks, eventually hardening and creating a new structure. In medicine, fracture filling is crucial in orthopedics, where materials like bone cement are used to stabilize broken bones and promote healing.