Knowledge Center
A library of neurodermal anatomy.
Structured, neutral reference material. Every article links onward to the atlas, the product index and our research method.
Dermatomes: the segmental map of the skin
How the body surface is organised into segmental bands, and why those bands are a useful design language.
Read article →Metameric organisation from C0 to S5
The metamer as an organising unit: one segment, one dermatome, one myotome, one surface field.
Read article →The occipital nerves and the cranial transition
Greater, lesser and third occipital nerves, and the field where cranial and cervical territories meet.
Read article →Reading peripheral nerve territories
Why peripheral nerve fields and dermatomes describe the same skin in two different languages.
Read article →Medial branches of the dorsal rami
The paraspinal strips immediately lateral to the spinous processes, and their segmental regularity.
Read article →The cervical plexus
C1–C4: the smallest somatic plexus, with an outsized surface footprint.
Read article →The brachial plexus
C5–T1: roots, trunks, divisions, cords and terminal branches.
Read article →The lumbar plexus
L1–L4 within the psoas major, projecting onto the anterior thigh.
Read article →The sacral plexus
L4–S4 on the posterior pelvic wall, origin of the sciatic nerve.
Read article →Neurocutaneous anatomy
The interface where peripheral nerve architecture meets the skin, and how SIRIAM defines its zones.
Read article →Defining and covering an application field
A neutral, repeatable technique: landmark, delimit, cover, document.
Read article →Cranial nerves and facial surface territories
The twelve cranial nerves, and which of them carry a cutaneous field.
Read article →How we work: method and evidence
Our development discipline, the limits of what we claim, and how educational models are used.
Read article →Frequently asked questions
Neutral answers to the questions we receive most often.
Read article →Knowledge graph
Related knowledge
The library is connected to the rest of the platform through the knowledge graph.
Formulation
Metamer
Peripheral nerve
Plexus
Neurocutaneous zone
Research