OCN	Osteocalcin
WT	Wild-Type
Fx	Fracture
TBI	Traumatic Brain Injury
Combined	Combined Trauma
C	Control
KO	Knock-Out
ECM	Extra Cellular Matrix
SNS	Sympathetic Nervous System
ESP	Embryonic-Stem-Cell-Phosphatase
OST-PTP	Osteoblast Testicular Tyrosinphosphatase
FoxO-1	Forkhead Box Protein O-1
OPG	Ostoeprotegrin
Runx 2	Runt-Related Transcription Factor 2
RANK	Receptor Activator of NF-κB
RANKL	Receptor Activator of NF-κB-Ligand
ANOVA	Analysis of Variance
pg	Picogram
mL	Milliliter
CT	Computer Tomography
CNS	Central Nervous System
BMD	Bone Mineral Density
BM	Bone Mass
BBB	Blood Brain Barrier
IL	Interleukin
CCII	Controlled Cortical Impact Injury
n	Number
ELISA	Enzyme Linked Immuno Sorbent Assay