Help with custom volumetric lattice that follows general direction of internal volume

[julian_millgate]

Hi All,

Over the past couple of months, I’ve developed dogbone models featuring small cylinders spanning their internal length. These were straightforward to create, as the cylinders only needed to extrude along a single axis (see below for reference).

Dogbone with cylinders spanning the length, external volume surrounding the ligaments has been hidden.

I’m now working on applying a similar fibre template, consisting of 670 µm diameter cylinders spaced 100 µm apart, to a 3D model of the human medial collateral ligament (template image below). These cylinders will represent ligament fibres and must follow the internal curvature of the ligament, which is significantly more complex than the dogbone model (see ligament model below, also have attached an .OBJ file of the model).

Fibre template (670micron diameter, 100micon spacing)

Ligament Model (Bottom-Up)Ligament Model (Outside)Ligament Model (Top-Down)Ligament Model (Side-Profile)Ligament Model

Key requirements:

• The fibres should align with the general internal direction of the ligament.
• They must remain entirely within the internal volume of the ligament model.

My initial idea was to make a custom volumetric lattice and apply it to the ligament, but I don't know how I could approach that.

Any other suggestions or guidance on how best to approach this would be greatly appreciated.