Evidence of Negative Effects of Defect Size and Older Patient Age by Quantitative CT-Based 3D Image Analysis in Ultraporous Beta-Tricalcium Phosphate Grafted Extremity Bone Defects at One Year

Table 1

Descriptive statistics for 21 bone lesions.

Parameter	Mean	Median	Std Dev	Min	Max
Patient Age	22.3	16	18.3	4	66
Original Defect Volume (DV, mm^3)	23520	8006	31390	107	94490
New Bone Volume (NB, mm^3)	15480	7025	18780	66	58220
Remaining TCP Volume (mm^3)	8037	1570	13010	0	41910
New Bone Fraction (NB/DV)	0.76	0.76	0.13	0.54	1.0
Cortical Defect Diameter Major (mm)	11.2	7.7	15.0	0	62.0
Cortical Defect Diameter Minor (mm)	5.4	2.2	6.7	0	22.2
Cortical Defect Fraction (CDF)	0.21	0.15	0.20	0	0.67