. 2017 Oct 4;99(19):1673–1682. doi: 10.2106/JBJS.17.00094

TABLE I.

Comparison of Bone Marrow Aspiration (BMA), Iliac Crest Marrow Space (IC-MS), and Iliac Crest Trabecular Surface (IC-TS) Fractions

Outcome	BMA^*	IC-MS^*	IC-TS^*	P Value^†
Cellularity (nucleated cells × 10⁶ per mL of aspirate or per g of tissue)	21.9 (19.0-25.2)^‡	256 (202-324)	18.1 (14.2-23.0)^‡	<0.0001
CTP-O prevalence (CTP-O per 10⁶ nucleated cells)	38.1 (25.7-56.6)^‡	4.28 (2.9-6.4)	58.9 (39.3-88.6)^‡	<0.0001
CTP-O concentration (CTP-O per mL of aspirate or per g of tissue)	835 (506-1,375)	1,180 (712-1,977)	1,155 (689-1,936)	0.73
No. of cells per colony (a metric of proliferation)	58.29^‡	35.5^§	38.2^‡^§	0.013
Cell density (a metric of cell migration) (cells per mm²)	153 (135-173)	125 (111-142)	150 (133-170)	0.051
Area of alkaline phosphatase activity per cell (a metric of differentiation) (μm²/cell)	28.2 (17.0-46.7)	39.6 (23.9-65.6)	67.7 (40.8-112)	0.064

The values are given as the geometric mean, with the 95% confidence interval in parentheses.

^†

ANOVA.

^‡

No significant difference between the indicated groups according to Tukey test, with alpha = 0.05.

^§

No significant difference between the indicated groups according to Tukey test, with alpha = 0.05.