Fracture threshold in the femur and tibia of people with spinal cord injury as determined by peripheral quantitative computed tomography

(A) Trabecular BMD of the distal epiphysis of the femur versus time after injury of the 99 subjects. Legend: ○, subjects who had never had a fracture of the femur; ▴, subjects who had had 1 fracture of the femur; ■, 1 subject who had had 4 fractures of the femur. The shaded area shows the mean ±2 SDs of a reference group of able-bodied people. The lower line indicates the highest trabecular BMD value where a fracture was found. (B) Trabecular BMD of the distal epiphysis of the tibia versus time after injury of the 99 subjects. Legend: ○, subjects who had never had a fracture of the tibia; ▴, subjects who had had 1 fracture to the tibia or fibula (1 case); ■, subjects who had had 2 fractures of the tibia. The shaded area shows the mean ±2 SDs of a reference group of able-bodied people. The lower line indicates the highest trabecular BMD value where a fracture was found.