Dugwayâs Chemical Test Division successfully tests JCAD system on Stryker. Caged in a menacing looking metal grid with intricate sensory equipment attached to all sides the Armyâs M113 NBC RV Stryker vehicle sits on a dusty road at Dugway Proving Groundâs target S grid being readied by its crew for testing....
The following conditions are when secondary curvatures of the spine  develop:   Cervical-when the baby starts to hold its head up   Lumbar-when the baby starts to â¦ walk. 4 people found this useful.
Degenerative Conditions. 1  Over time, parts of our bodies can wear out or degenerate. When that happens, those body parts don't work as well, and this degeneration can lead to kyphosis. Two common degenerative conditions that can cause secondary kyphosis are: