An estimate of the frequency of whiplash injuries in Sweden is quoted and the mechanism of such injuries is discussed. 27 of the most common accessory headrests on the Swedish and Finnish market were tested statically. The results of these tests are reported as force-displacement graphs and the energy absorption for each head-rest is shown. Dynamic tests were performed on 26 accessory head-rests and two standard car seats with head-rests. The results of these tests are presented graphically. Maximum head angle and the duration of head movement are discussed in terms of mean angular velocity which is considered as a more significant parameter than the 45 degree angle limit in the United States Federal Standard No. 202. In conclusion, 2 out of 28 accessory head-rests seemed to offer some protection against whiplash injury. The rest might even increase the risk of neck injury. Almost all head-rests had sharp and pointed details which were insufficiently covered by too soft paddings. /Author/


  • Swedish

Media Info

  • Features: Figures; References;
  • Pagination: 30 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00099583
  • Record Type: Publication
  • Source Agency: National Safety Council Safety Research Info Serv
  • Report/Paper Numbers: No. 1
  • Files: TRIS
  • Created Date: Nov 5 1975 12:00AM