Lymph

lymph_mesh builds lower-limb lymph-node groups and collecting routes. The superficial field contains separate medial and posterolateral paths.

The solids live in extensions/humanoid/skeleton/leg/lymph/. add_leg can draw them with LYMPH. See Leg.

This is not a three.js port. See Extensions.

Call it

from extensions.humanoid.sex import MALE
from extensions.humanoid.spec import HumanoidSpec
from extensions.humanoid.skeleton.leg.contents import BONES, LYMPH
from extensions.humanoid.skeleton.leg.lymph.dimensions import INGUINAL_NODES
from extensions.humanoid.skeleton.leg.lymph.geometry import lymph_mesh
from units.si import FOOT, Length

var person = HumanoidSpec(Length(6.0, FOOT), MALE)
var nodes = lymph_mesh(person, INGUINAL_NODES)

side picks RIGHT or LEFT. A right leg is the default.

The solids live in the leg frame. The origin is the tibiofemoral joint line. Plus y is proximal. Plus x is body-right. Plus z is anterior.

Named parts

The labeled set connects superficial and deep drainage to the correct node groups.

Part	Role
INGUINAL_NODES	Five representative superficial and deep nodes below the inguinal ligament.
POPLITEAL_NODES	Five representative nodes in the posterior knee fat.
SUPERFICIAL_LYMPHATICS	Separate medial and posterolateral routes beside the saphenous veins.
DEEP_LYMPHATICS	Three crural collectors, popliteal nodes and one deep-inguinal efferent.

The medial superficial route accompanies but does not overlap the great saphenous vein. The posterolateral route does the same beside the small vein.

Anterior tibial, posterior tibial and fibular collectors converge on representative popliteal nodes. Their efferent ends at the deep inguinal representative.

Physical collector radii drive distance, containment and analytic mass. The mesh alone enlarges collectors for visibility.

is_node_group returns True for the inguinal and popliteal clusters.

Tissue

lymph_tissue() holds wet density 1.01 g/cm³ as a named near-water template. Water fraction is 0.95. Compressive modulus is 0.02 MPa. Poisson's ratio is 0.45.

Water fraction is metadata. Mass uses wet density times envelope volume. Do not scale by one minus water fraction again.

These values are named research metadata. This extension does not implement a constitutive model.

Sources

• Lower-limb lymphatic anatomy and lymphosomes
• Inguinal lymph nodes, StatPearls
• Lower-limb lymphatic drainage
• Healthy lower-limb lymphatic diameters

Mass

from extensions.humanoid.skeleton.leg.lymph.mass import lymph_mass
from units.si import GRAM

var report = lymph_mass(person, INGUINAL_NODES)
report.mass.to(GRAM)

Example

examples/lymph.mojo draws one six foot male right leg. The layers are bones and lymph. It writes out/lymph.png. Run it with:

.venv/bin/mojo run -I . examples/lymph.mojo out/lymph.png