This Article
Right arrow Full Text (PDF)
Right arrow Letters to the Editor: Submit a response
Right arrow Alert me when this article is cited
Right arrow Alert me when Letters to the Editor are posted
Right arrow Alert me if a correction is posted
Services
Right arrow E-mail this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to My File Cabinet
Right arrow Download to citation manager
Right arrowReprints and Permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Otis, J. C.
Right arrow Articles by Gould, J. D.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Otis, J. C.
Right arrow Articles by Gould, J. D.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us   Add to Technorati  
What's this?

The Journal of Bone and Joint Surgery, Vol 68, Issue 1 65-70, Copyright © 1986 by Journal of Bone and Joint Surgery, Inc

JOURNAL CONTENTS

The effect of external load on torque production by knee extensors

JC Otis and JD Gould

The kinematics of the knee joint are load-dependent; the length of the lever arm of the extensor mechanism and the pathway of the instant center of rotation vary with external load. This study was conducted to determine if the maximum extensor torque-generating capacity of the knee joint is dependent on the distance from the knee joint at which the external force resisting extension is located. Maximum isometric extensor torques were measured at 90 and 30 degrees of knee flexion while the distance from the knee joint to the resisting force was varied. Our results demonstrated that the subjects generated larger maximum extensor torques, at both 90 and 30 degrees of knee flexion, when the external resisting force was positioned farther distal to the knee joint. This increase was as large as 50 per cent with the knee at 30 degrees of flexion.
Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us   Add to Technorati Technorati    What's this?


This article has been cited by other articles:


Home page
 Am J Sports MedHome page
Y. Levakos, M. F. Sherman, K. D. Shelbourne, S. Trakru, and J. R. Bonamo
Simultaneous Rupture of the Anterior Cruciate Ligament and the Patellar Tendon
Am. J. Sports Med., July 1, 1996; 24(4): 498 - 503.
[PDF]

Home page
 Am J Sports MedHome page
P. A. Torzilli, Xianghua Deng, and R. F. Warren
The Effect of Joint-Compressive Load and Quadriceps Muscle Force on Knee Motion in the Intact and Anterior Cruciate Ligament-Sectioned Knee
Am. J. Sports Med., January 1, 1994; 22(1): 105 - 112.
[Abstract] [PDF]

Home page
 Am J Sports MedHome page
A. A. Mendez and R. L. Eyster
Displaced nonunion stress fracture of the femoral neck treated with internal fixation and bone graft: A case report and review of the literature
Am. J. Sports Med., March 1, 1992; 20(2): 230 - 233.
[PDF]

Home page
 Am J Sports MedHome page
K. R. Kaufman, K.-N. An, W. J. Litchy, B. F. Morrey, and E. Y.S. Chao
Dynamic joint forces during knee isokinetic exercise
Am. J. Sports Med., June 1, 1991; 19(3): 305 - 316.
[Abstract] [PDF]

Home page
 Am J Sports MedHome page
C. Johansson, I. Ekenman, H. Tornkvist, and E. Eriksson
Stress fractures of the femoral neck in athletes: The consequence of a delay in diagnosis
Am. J. Sports Med., September 1, 1990; 18(5): 524 - 528.
[Abstract] [PDF]