Bones of the Abdomen

Overview

The lumbar spine forms the supportive posterior boundary of the abdomen and plays a key role in weight-bearing and movement. This section introduces its structural features and regional organisation.

Key Structures

Coverage includes the vertebral structure, intervertebral joints and supporting ligaments of the lumbar spine, highlighting their functional adaptations.

Clinical Relevance and Learning Focus

Understanding lumbar anatomy is essential for assessing back pain, nerve compression, spinal trauma and regional anaesthesia. This foundation supports safe examination and imaging interpretation.

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The Lumbar Spine

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Illustration depicting the deep muscles of the gluteal region, including the quadratus femoris, obturator internus, piriformis, and gemelli muscles.
Encyclopaedia

Piriformis

by Dr Oliver Jones

Lateral view of the eye's extraocular muscles, illustrating their arrangement and relation to cranial nerves.
The Eye

The Extraocular Muscles

by Dr Oliver Jones

Illustration of the zygomatic nerve's course and branches stemming from the maxillary nerve.
Encyclopaedia

Zygomatic Nerve

by Akila Wasalage