The protrusion of the navicular bone may lead to the following hazards: 1. It may lead to a very obvious deformity of the patient’s foot, because once the navicular bone is excessively protruding, it may lead to compression of other parts of the foot in the process of wearing shoes for a long time, which may cause a series of changes in the appearance of the patient’s foot over time. 2. If the navicular bone protrudes excessively or if the paravicular bone appears here, it will often lead to instability of the attachment point of the tendon, which will lead to the weakening of the tendon strength here over time. Once this happens, it may cause the patient to have abnormal gait and may lead to an imbalance in the strength of the inner and outer sides of the foot, resulting in arch collapse and foot exostosis.