Table 2.

Comparison of percent normalized stiffness for cortical bone-only or cancellous bone-only (i.e., percent of intact whole bone stiffness for cortical bone alone (cancellous bone removal) or for cancellous bone alone (cortical bone removal)) at the distal femoral diaphysis, metaphysis, and epiphysis in dancers versus healthy, relatively inactive controls

% normalized stiffness	Dancers mean	Dancers standard deviation	Controls mean	Controls standard deviation	p value
Distal femoral diaphysis
Cortical	31.2	±2.4	38.3	±3.9	0.003
Cancellous	53.9	±3.0	48.8	±6.7	0.049
Distal femoral metaphysis
Cortical	10.1	±5.0	18.2	±8.9	0.0025
Cancellous	74.7	±7.0	74.5	±5.8	0.94
Distal femoral epiphysis
Cortical	15.1	±1.9	23.6	±3.3	0.000003
Cancellous	74.8	±2.4	72.5	±5.1	0.24