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 of the posterior cutaneous nerve of the thigh, showing its innervation to the lower medial gluteal quadrant and posterior thigh.
Encyclopaedia

Posterior Cutaneous Nerve of the Thigh

by Mihir Himanshu Majeethia

Lateral view of the neck highlighting the digastric, mylohyoid, and stylohyoid suprahyoid muscles.
Encyclopaedia

Digastric

by Max Bidewell

Simplified illustration of the mesentery connecting the small and large intestines to the posterior abdominal wall.
The Accessory Organs of the Abdomen

The Mesentery

by Reshma Joseph