Understanding the Sacrum: Anatomy, Function, and Yoga Connection

The Structural Pedestal of Movement

The sacrum bone serves as the anatomical base of the spine and the back of the pelvis. It functions as a vital structural pedestal for movement and posture.

Known to anatomists as the os sacrum or holy bone, this small triangular structure carries a rich history across anatomical science and hatha yoga archives. Yoga Journal documented these traditional perspectives in a November-December 1993 archival feature exploring the esoteric anatomy of the spine.

Anatomy and Physical Location

Anatomically, the sacrum is broad across the top, where it acts as a kind of pedestal for the long, flexible part of the spine. It tapers down to a point called the apex, which attaches to the coccyx.

Practitioners can easily locate the bone by standing in Mountain Pose, or Tadasana, and palpating the flat, hard area between the firm gluteus maximus muscles covering the back of the pelvis.

Biomechanical Functions in Daily Action

This structural placement allows the bone to fulfill its two primary biomechanical functions. It roots and supports the spine during daily actions and yoga postures.

Root Chakra and Subtle Energy

In hatha yoga philosophy, the sacrum corresponds with the muladhara, or root chakra, positioned at the base of the subtle energy system.

Georg Feuerstein translated the Bhagavad Gita concept of samatva as evenness or equanimity. This is a state physically experienced when all vertebrae share loads equally across the staff of Meru.

Addressing Spinal Stress and Alignment

Misalignment or stuck vertebrae shift stress to neighboring regions. This can potentially lead to lower back discomfort and structural strain over time.