Table 1. Compressive Stiffness of Engineered Constructs^a.

Group	HA (kPa)	G (kPa)
Week 0b	6.4 ± 1.4	3.1 ± 0.6
Static, 6 weeksb	5.4 ± 1.0	2.5 ± 0.5
Bioreactor, 6 weeksb	6.5 ± 1.1	2.3 ± 0.5
Native discc	18.6 ± 5.2	8.8 ± 2.5

Abbreviations: H_A, aggregate modulus; G, shear modulus.

^aReported values represent means ± standard deviations.

^bRepresents time after seeding; does not include 1-week seeding period.

^cObtained from center of the porcine TMJ disc in a previous study.¹⁷