The cervical spine refers to the part of the spine located in the neck, consisting of seven vertebrae, intervertebral discs, and ligaments between the vertebrae. When cervical spondylosis occurs, it mainly causes pain in the head, neck, and shoulders, as well as numbness or pain in the arms and fingers. When the neck is stiff, the patient's movement is restricted, and neck and shoulder pain may also be accompanied by dizziness, nausea, vomiting, or even sudden collapse. Some patients may also experience a heavy feeling in the shoulders and back, weakness in the arms, numbness in the fingers, decreased skin sensation in the limbs, and weakness in gripping objects; other patients may also experience weakness in the lower limbs, a feeling of treading on cotton when walking, unsteady walking, or numbness in the feet.