Bone fissures clinically are referred to as hairline fractures, which are cracks appearing in the bone cortex. However, the stability of the bone still exists, and conservative treatment can be chosen, utilizing limb supports or plaster for external fixation to facilitate the healing of the fracture. During the acute phase of the bone condition, we do not recommend applying heat, but suggest cold compresses instead, to reduce bleeding and alleviate swelling. After the acute phase, appropriate heat application can be considered to promote circulation around the area, thereby aiding the healing of the fracture fissures and the fracture itself.