Table 1.

Tissue type composition

Category% Bone (mean ± s.d.)% Cartilage (mean ± s.d.)
Control94.27±4.115.73±4.80
Bending78.40±2.6321.57±2.60
Shear80.18±5.7819.82±3.03
Combination81.89±13.1718.11±13.15
Native knee83.57±1.8816.43±2.64
Native intervertebral53.87±13.0246.13±7.53
  • The results of the three treatment groups - bending, shear, and combination - are compared with those of the control group and native knee joint. The three treatment groups approximate the 80:20 bone to cartilage ratio found in the knee joint, while the mean control group ratio of bone to cartilage is 94:6. The mean intervertebral joint ratio of bone to cartilage is 50:50.