![]() The zygoma has four articulations, referred to as the ZMC complex: The zygoma also comprises a significant portion of the inferior and lateral orbital walls thus, fractures of the zygoma warrants investigation into fractures of the orbit. ![]() It plays a key role structurally as it absorbs and dissipates forces away from the cranial base. The zygoma is the most anterolateral projection of the midface. The management of the zygomatic arch and ZMC fractures should be patient-specific but range from simple observation to open reduction with internal fixation (ORIF). Fractures of the zygomatic arch (ZA) or any of its bony articulations can cause significant functional and cosmetic morbidity. The zygoma and its articulations comprise the zygomaticomaxillary complex (ZMC). It is the process to the right of "zygomatic" in the image.The zygoma is a bone that provides vital contributions to both the structure and aesthetic of the midface and articulates with several bones of the craniofacial skeleton. The temporal process, long, narrow, and serrated, articulates with the zygomatic process of the temporal. It is the area below "zygomatic" in the image. The maxillary process presents a rough, triangular surface which articulates with the maxilla. It is the gloomy area beneath the lac(rimal) and ethmoidal bones in the image. The orbital process is a thick, strong plate, projecting backward and medialward from the orbital margin. This tubercle is not seen in the picture. On its orbital surface, just within the orbital margin and about 11 mm below the zygomaticofrontal suture is a tubercle of varying size and form, but present in 95 per cent of skulls (Whitnall 43). The cranial suture between the frontal and zygomatic bone is found here. The frontosphenoidal process is thick and serrated. The zygomatic bone itself has four processes, namely the frontosphenoidal, orbital, maxillary and temporal processes. The anterior root, continuous with the lower border, is short but broad and strong it is directed medialward and ends in a rounded eminence, the articular tubercle (eminentia articularis). ![]()
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