diff --git a/anatomy/Skeletal_Case_Studies.md b/anatomy/Skeletal_Case_Studies.md
index e876ebe..926475e 100644
--- a/anatomy/Skeletal_Case_Studies.md
+++ b/anatomy/Skeletal_Case_Studies.md
@@ -46,9 +46,11 @@ Osteoclasts and osteoblasts because in OI they dont have enough bones and in FOV
 
 What tissues are involved?
 
-
+structural protein fibers that help keep bones strong in the OI case.
 
 bone /cell physiology going awry?
 
+the osification is one great example of cells not doing what they are supposed to and making bones instead of making scar-tissue. 
 
+The brittle bones is a good example of the osteoclasts going hay-wire and over preforming and causing brittle bones.