Tool · Body-Flow Diagrams

How designs move across the body.

Select a body zone to read the primary and secondary flow that governs it, and to jump to the relevant case-study article.

Zone

Shoulder & deltoid

Primary flow

Wraps around the deltoid following its rotation; the primary flow arcs from clavicle over the cap of the shoulder toward the upper arm.

Secondary flow

Internal texture typically runs perpendicular to the arc, catching light differently as the arm rotates.

Joint considerations

Glenohumeral: designs must survive full external and internal rotation.