Flexion-extension radiographs are X-ray images taken while a person bends forward (flexion) and backward (extension). They are used to see how the spine moves under controlled, real-life positions. They are commonly ordered for the neck (cervical spine) and lower back (lumbar spine). They help clinicians evaluate possible abnormal motion, also called spinal instability.

Creatinine is a natural waste product made by muscles during normal energy use. It is cleared from the blood by the kidneys and removed in urine. Clinicians measure Creatinine to understand kidney filtration and overall kidney function. It is commonly used in cardiovascular care because many heart tests and treatments depend on kidney performance.

Oblique view is an imaging angle that looks at the body from the side and front at the same time. It is most commonly used in X-rays, CT scans, MRI scans, and fluoroscopy to better show certain spine structures. In spine care, Oblique view can make openings for nerves and small bony joints easier to see. It is a descriptive term for the image orientation, not a treatment.

Sodium is a mineral and an electrolyte that carries an electrical charge in body fluids. It helps regulate fluid balance, blood pressure, and nerve and muscle function, including the heart. Sodium is commonly found in table salt and many packaged foods. It is also measured in blood tests and can be given as part of intravenous (IV) fluids or medications.

Lateral view is a way of looking at the body from the side. In spine care, Lateral view most often refers to a side-angle image on X-ray, fluoroscopy, CT, or MRI. It helps clinicians assess alignment, bone relationships, and certain patterns of injury or wear. It is commonly used in clinics, emergency settings, and preoperative or postoperative evaluations.

Magnesium is a mineral and electrolyte that the body needs to function normally. It helps regulate electrical activity in nerves and muscles, including the heart. It is found in foods and is also available in supplements and prescription formulations. In cardiovascular care, it is commonly discussed in lab results and used to treat specific rhythm and electrolyte problems.

AP view means **anteroposterior view** on an X-ray or fluoroscopy image. The X-ray beam travels from the **front (anterior)** of the body to the **back (posterior)**. It is commonly used in spine, pelvis, and chest imaging to show overall alignment and bony anatomy. AP view is also used during some spine procedures to help confirm instrument or needle position.

Potassium is a mineral and an electrolyte that helps the body’s cells function normally. It is essential for the heart’s electrical activity and for muscle and nerve signaling. In cardiovascular care, Potassium is commonly measured in blood tests and monitored in hospitalized patients. It is also discussed when managing blood pressure medicines, heart rhythm problems, and kidney-related conditions.

Plain radiograph is a standard X-ray image made without injected contrast dye. It shows bones and alignment clearly and shows soft tissues only in limited ways. It is commonly used in spine, back, and neck evaluations in clinics, urgent care, and hospitals. It is often the first imaging test ordered before more specialized scans.

Electrolytes are minerals in body fluids that carry an electric charge. They help nerves, muscles, and the heart work normally. They are commonly checked with blood and urine tests in clinics and hospitals. They are also discussed in hydration, exercise, and illness recovery.