Posterior median line

Anatomical line on the posterior side of the human body

The posterior median line is an anatomical landmark located on the human body. It is a vertical line that runs down the midline of the back, dividing it into equal left and right halves. This line is used as a reference point in various medical and anatomical contexts.

Anatomical Significance

The posterior median line is significant in the field of anatomy and medicine as it helps in identifying and describing the location of various structures and conditions on the back. It is particularly useful in the context of spinal anatomy, as it runs along the vertebral column.

Related Anatomical Structures

• Vertebral column: The posterior median line runs parallel to the vertebral column, which is a crucial structure in the human body, providing support and protection for the spinal cord.
• Scapula: The line is also used as a reference point for the positioning of the scapulae, or shoulder blades.
• Erector spinae muscles: These muscles, which run along the spine, are often examined in relation to the posterior median line.

Clinical Relevance

In clinical practice, the posterior median line is used as a guide for various medical procedures and examinations. For instance:

• Lumbar puncture: This procedure, which involves inserting a needle into the lower back to collect cerebrospinal fluid, often uses the posterior median line as a reference.
• Spinal surgery: Surgeons use this line to ensure accurate incisions and interventions along the spine.

See Also

• Anterior median line
• Midaxillary line
• Midclavicular line
• Vertebral column
• Spinal cord