gms | German Medical Science

68. Jahrestagung der Deutschen Gesellschaft für Unfallchirurgie
90. Tagung der Deutschen Gesellschaft für Orthopädie und Orthopädische Chirurgie
45. Tagung des Berufsverbandes der Fachärzte für Orthopädie in Zusammenarbeit mit dem Deutschen Verband für Physiotherapie – Zentralverband der Physiotherapeuten/Krankengymnasten

19. bis 23.10.2004, Berlin

The Relationship between Isokinetic Quadriceps Strength and Laxity on gait Analysis in AACL-Reconstructes knees

Meeting Abstract (DGOOC 2004)

  • presenting/speaker A. Gokeler - Athletikum Sports Medicine Center, Hofheim
  • T. Schmalz - Biomechanics Laboratory, Otto-Bock Research Department, Göttingen
  • E. Knop - Athletikum Sports Medicine Center, Hofheim
  • J. Freiwald - University Wuppertal, Dep. of Human Movement Science, Wuppertal
  • S. Blumentritt - Biomechanics Laboratory, Otto-Bock Research Department, Göttingen

Deutsche Gesellschaft für Unfallchirurgie. Deutsche Gesellschaft für Orthopädie und orthopädische Chirurgie. Berufsverband der Fachärzte für Orthopädie. 68. Jahrestagung der Deutschen Gesellschaft für Unfallchirurgie, 90. Tagung der Deutschen Gesellschaft für Orthopädie und Orthopädische Chirurgie und 45. Tagung des Berufsverbandes der Fachärzte für Orthopädie. Berlin, 19.-23.10.2004. Düsseldorf, Köln: German Medical Science; 2004. Doc04dguK2-2007

Die elektronische Version dieses Artikels ist vollständig und ist verfügbar unter: http://www.egms.de/de/meetings/dgu2004/04dgu0551.shtml

Veröffentlicht: 19. Oktober 2004

© 2004 Gokeler et al.
Dieser Artikel ist ein Open Access-Artikel und steht unter den Creative Commons Lizenzbedingungen (http://creativecommons.org/licenses/by-nc-nd/3.0/deed.de). Er darf vervielf&aauml;ltigt, verbreitet und &oauml;ffentlich zug&aauml;nglich gemacht werden, vorausgesetzt dass Autor und Quelle genannt werden.


Gliederung

Text

Gait alterations after ACL-reconstruction have been reported in the literature. In the current study, a group of 14 patients who all had an ACL-reconstruction with a patellar tendon autograft were examined. Kinetic and kinematic data were obtained from the knee during walking. The Flexion-Extension-Deficit (FED) calculated from the angular difference between maximal flexion and maximal extension during the stance phase in the ACL-reconstructed and the normal knee was measured. We analyzed whether these alterations in gait were related to quadriceps strength and residual laxity of the knee. It may be that patients modify their gait patterns to protect the knee from excessive anterior translation of the tibia by reducing the amount of extension during stance. On the other hand persistent quadriceps weakness may also cause changes in gait patterns as the quadriceps is functioning as an important dynamic stabilizer of the knee during stance. Results showed that patients had a significantly higher FED value of 4.9 ± 4.0 when compared to data obtained from a healthy control group in a previous study who had a FED 1.3 ± 0.9. This is mainly caused by an extension deficit during mid stance. External extension moments of the knee TZMAX [Nm/kg] were significantly lower in the current patients group when compared to a healthy control group (TZMAX [Nm/kg] patients -0.27 ± 0.19 versus -0.08 ± 0.06 in control group). Correlation coefficient analysis did not show any positive relationship between quadriceps strength and gait analysis parameters. Furthermore no correlation was found between the amount of laxity of the knee and gait. The clinical relevance of this study showed that the measured gait alterations cannot be solely explained by often used biomechanical indicators such as laxity and strength. It appears that gait alterations after ACL-reconstruction are the result of the surgical procedure with subsequent modified motor programming.