Verhalten der instabilen densfraktur bei abnahme des motorradhelms. Eine biomechanische untersuchung

Translated title of the contribution: Mobility of unstable fractures of the odontoid during helmet removal. A biomechanical study

R. A. Laun, E. Lignitz, N. Haase, L. L. Latta, A. Ekkernkamp, D. Richter

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

In severe motorcyclist accidents unstable injuries of the cervical spine can usually not be excluded before an X-ray has been taken in the hospital. Despite this the helmet has to be taken off at the place of the accident in order to provide adequate treatment and airway management of the injured driver. There are no data in the current literature showing what happens to unstable lesions of the cervical spine during helmet removal. An experimental unstable lesion of the cervical spine was created by an osteotomy of the odontoid in 10 fresh frozen cadavers with intact soft tissues. All motions occurring in the segments C1-2 and C2-3 during helmet removal were recorded by fluoroscopy. The average motion in the unstable segment C1-2 was 23.7° during a full range of extension-flexion movement of the cervical spine without any signs of dislocation of the segment. After application of the helmet there was one case of dislocation of C1-2 in neutral supine position already, and two further cases of dislocations during helmet removal. The average motion of C1-2 recorded during helmet removal was 19.0° (2-25°), median 18.0°. In order to avoid fracture dislocations and motion in the unstable upper cervical spine the helmet should better be cut in pieces at the place of the accident. There is a need for discussions with helmet producers to develop a new generation of helmets that can be removed easily without manipulating the head.

Original languageGerman
Pages (from-to)1092-1096
Number of pages5
JournalUnfallchirurg
Volume105
Issue number12
DOIs
StatePublished - Dec 1 2002

Fingerprint

Head Protective Devices
Spine
Accidents
Airway Management
Supine Position
Fluoroscopy
Osteotomy
Cadaver
Head
X-Rays

Keywords

  • Biomechanics
  • Cervical spine
  • Helmet removal
  • Odontoid fracture

ASJC Scopus subject areas

  • Surgery
  • Nursing(all)
  • Emergency Medicine

Cite this

Laun, R. A., Lignitz, E., Haase, N., Latta, L. L., Ekkernkamp, A., & Richter, D. (2002). Verhalten der instabilen densfraktur bei abnahme des motorradhelms. Eine biomechanische untersuchung. Unfallchirurg, 105(12), 1092-1096. https://doi.org/10.1007/s00113-002-0451-2

Verhalten der instabilen densfraktur bei abnahme des motorradhelms. Eine biomechanische untersuchung. / Laun, R. A.; Lignitz, E.; Haase, N.; Latta, L. L.; Ekkernkamp, A.; Richter, D.

In: Unfallchirurg, Vol. 105, No. 12, 01.12.2002, p. 1092-1096.

Research output: Contribution to journalArticle

Laun, RA, Lignitz, E, Haase, N, Latta, LL, Ekkernkamp, A & Richter, D 2002, 'Verhalten der instabilen densfraktur bei abnahme des motorradhelms. Eine biomechanische untersuchung', Unfallchirurg, vol. 105, no. 12, pp. 1092-1096. https://doi.org/10.1007/s00113-002-0451-2
Laun, R. A. ; Lignitz, E. ; Haase, N. ; Latta, L. L. ; Ekkernkamp, A. ; Richter, D. / Verhalten der instabilen densfraktur bei abnahme des motorradhelms. Eine biomechanische untersuchung. In: Unfallchirurg. 2002 ; Vol. 105, No. 12. pp. 1092-1096.
@article{eeddc22156c34c83bc5a8a3a78e8130c,
title = "Verhalten der instabilen densfraktur bei abnahme des motorradhelms. Eine biomechanische untersuchung",
abstract = "In severe motorcyclist accidents unstable injuries of the cervical spine can usually not be excluded before an X-ray has been taken in the hospital. Despite this the helmet has to be taken off at the place of the accident in order to provide adequate treatment and airway management of the injured driver. There are no data in the current literature showing what happens to unstable lesions of the cervical spine during helmet removal. An experimental unstable lesion of the cervical spine was created by an osteotomy of the odontoid in 10 fresh frozen cadavers with intact soft tissues. All motions occurring in the segments C1-2 and C2-3 during helmet removal were recorded by fluoroscopy. The average motion in the unstable segment C1-2 was 23.7° during a full range of extension-flexion movement of the cervical spine without any signs of dislocation of the segment. After application of the helmet there was one case of dislocation of C1-2 in neutral supine position already, and two further cases of dislocations during helmet removal. The average motion of C1-2 recorded during helmet removal was 19.0° (2-25°), median 18.0°. In order to avoid fracture dislocations and motion in the unstable upper cervical spine the helmet should better be cut in pieces at the place of the accident. There is a need for discussions with helmet producers to develop a new generation of helmets that can be removed easily without manipulating the head.",
keywords = "Biomechanics, Cervical spine, Helmet removal, Odontoid fracture",
author = "Laun, {R. A.} and E. Lignitz and N. Haase and Latta, {L. L.} and A. Ekkernkamp and D. Richter",
year = "2002",
month = "12",
day = "1",
doi = "10.1007/s00113-002-0451-2",
language = "German",
volume = "105",
pages = "1092--1096",
journal = "Der Unfallchirurg",
issn = "0177-5537",
publisher = "Springer Verlag",
number = "12",

}

TY - JOUR

T1 - Verhalten der instabilen densfraktur bei abnahme des motorradhelms. Eine biomechanische untersuchung

AU - Laun, R. A.

AU - Lignitz, E.

AU - Haase, N.

AU - Latta, L. L.

AU - Ekkernkamp, A.

AU - Richter, D.

PY - 2002/12/1

Y1 - 2002/12/1

N2 - In severe motorcyclist accidents unstable injuries of the cervical spine can usually not be excluded before an X-ray has been taken in the hospital. Despite this the helmet has to be taken off at the place of the accident in order to provide adequate treatment and airway management of the injured driver. There are no data in the current literature showing what happens to unstable lesions of the cervical spine during helmet removal. An experimental unstable lesion of the cervical spine was created by an osteotomy of the odontoid in 10 fresh frozen cadavers with intact soft tissues. All motions occurring in the segments C1-2 and C2-3 during helmet removal were recorded by fluoroscopy. The average motion in the unstable segment C1-2 was 23.7° during a full range of extension-flexion movement of the cervical spine without any signs of dislocation of the segment. After application of the helmet there was one case of dislocation of C1-2 in neutral supine position already, and two further cases of dislocations during helmet removal. The average motion of C1-2 recorded during helmet removal was 19.0° (2-25°), median 18.0°. In order to avoid fracture dislocations and motion in the unstable upper cervical spine the helmet should better be cut in pieces at the place of the accident. There is a need for discussions with helmet producers to develop a new generation of helmets that can be removed easily without manipulating the head.

AB - In severe motorcyclist accidents unstable injuries of the cervical spine can usually not be excluded before an X-ray has been taken in the hospital. Despite this the helmet has to be taken off at the place of the accident in order to provide adequate treatment and airway management of the injured driver. There are no data in the current literature showing what happens to unstable lesions of the cervical spine during helmet removal. An experimental unstable lesion of the cervical spine was created by an osteotomy of the odontoid in 10 fresh frozen cadavers with intact soft tissues. All motions occurring in the segments C1-2 and C2-3 during helmet removal were recorded by fluoroscopy. The average motion in the unstable segment C1-2 was 23.7° during a full range of extension-flexion movement of the cervical spine without any signs of dislocation of the segment. After application of the helmet there was one case of dislocation of C1-2 in neutral supine position already, and two further cases of dislocations during helmet removal. The average motion of C1-2 recorded during helmet removal was 19.0° (2-25°), median 18.0°. In order to avoid fracture dislocations and motion in the unstable upper cervical spine the helmet should better be cut in pieces at the place of the accident. There is a need for discussions with helmet producers to develop a new generation of helmets that can be removed easily without manipulating the head.

KW - Biomechanics

KW - Cervical spine

KW - Helmet removal

KW - Odontoid fracture

UR - http://www.scopus.com/inward/record.url?scp=0036941830&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036941830&partnerID=8YFLogxK

U2 - 10.1007/s00113-002-0451-2

DO - 10.1007/s00113-002-0451-2

M3 - Article

C2 - 12486576

AN - SCOPUS:0036941830

VL - 105

SP - 1092

EP - 1096

JO - Der Unfallchirurg

JF - Der Unfallchirurg

SN - 0177-5537

IS - 12

ER -