Our tests with fresh human cadavers were continued (cf. proceedings, 18th Stapp Car Crash Conference). Presented herewith are the results of 103 tests evaluated so far.
While the severity of injuries showed an increase with advancing age, it is not obviously dependent upon weight or sex. Under the conditions chosen by us, the 12 to 30-year age group reached the thorax tolerance level at an impact velocity of still below 50 km/h with a stopping distance of 40 cm, the 30 to 50-year age group of below 40 km/h, and the age group beyond 50 years below 30 km/h.
A comparison of our results with volunteer tests
Therefore, it was set great store by the recording of vertebral injuries. By employing careful dissection and preparatory-techniques, disc injuries, hemorrhages in the region of muscles and intervertebral joints were found in the majority of the cases, where as less frequently fractures of vertebral bodies, vertebral arcs and fractures of the processus spinosus and transversus, respectively were noticed. Highly dangerous vertebral injuries involving contusion or rupture of the cervical or thoracic spinal cord occurred only rarely. The Abbreviated ACIR scale proved to be sufficient for the graduation of the injuries. The grades ranging from 0 to 4 may well-be compared with the AIS scale with grades from 0 to 9 (AIS 6 - 9 = fatal is equivalent to ACIR 4).
In concluding, reports will be rendered on the photographic evaluation of the phases of movement recorded laterally by a high-speed camera, and on the legal basis of cadaver tests.