Torg ratio

Torg ratio

(tawrg)
[Joseph S. Torg, U.S. orthopedist, b. 1934]
The relationship between the diameter of the spinal canal and the corresponding vertebral body. The Torg ratio is calculated through radiographical or MRI measurement by dividing the sagittal diameter of the canal by the diameter of the vertebral body. Studies have indicated that lower ratios correspond to higher risk of spinal cord injury in American football.
References in periodicals archive ?
(25) Herzog and coworkers found that many athletes have a larger than normal vertebral body width, which caused the Torg ratio to be misleading.
Although there seems to be a relationship between a low Torg ratio and spinal injury, it does not necessarily predispose athletes to an initial injury.
Forty-two of these athletes had a Torg ratio less than 0.80.
(40) Athletes with a lower Torg ratio have been described in the literature as having a higher incidence of recurrent stingers.
The MSD/APD ratio, also called the Torg ratio has been used been used for diagnostic parameter for predicting cervical spinal stenosis, and has being suggested that it will also be of relevance in radiological diagnosis of lumbar spinal stenosis (Bajwa et al.).
Application of a correlation between the lumbar Torg ratio and the area of the spinal canal to predict lumbar stenosis: a study of 420 postmortem subjects.