Which part of the body is the zygomatic bone?

The zygomatic bone is located in the mid-facial region, situated inferolaterally to the orbit. It is rhomboid-shaped and features four processes: the orbital process, temporal process, maxillary process, and frontal-sphenoidal process. The zygomatic bone and zygomatic arch serve as critical bony supports of the face, fulfilling several key functions: protecting the prominent lateral facial structures, defining the lateral contours of the mid-face, and separating the deep temporalis muscle from the overlying superficial skin. As an essential bony framework shaping facial appearance, the zygomatic bone is closely associated with facial aesthetics.

The zygomatic arch serves three primary functions: 1. Protective function—shielding the lateral cranial wall and surrounding structures; 2. Contour-defining function—contributing to the lateral facial outline; 3. Separation function—partitioning the overlying skin from the temporalis muscle, thereby facilitating normal temporalis muscle function.

In recent years, zygomatic bone fractures have become increasingly common and have drawn growing clinical attention. Zygomatic pain may result from various causes, including facial exposure to cold, excessive local muscular tension, or pathological conditions such as bone tumors, bone cysts, bone contusions, or microfractures. Accurate diagnosis typically requires imaging studies—including localized X-ray, color Doppler ultrasound, CT, and even MRI.