liu.seSearch for publications in DiVA
Change search
ReferencesLink to record
Permanent link

Direct link
Knee and ankle kinesiology and joint instability
Linköping University, Department of Neuroscience and Locomotion, Orthopaedics and Sports Medicine. Linköping University, Faculty of Health Sciences.
1991 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

This study, comprising 7 separate papers, is concerned with the additional information supplied by a kinesiological approach for evaluation of patients with instability due to old ligamenta us injury to the knee or ankle joint. This approach required development of new methods for kinesiological analysis.

Impaired performance in patients with old anterior cruciate ligament (ACL) rupture was mainly found in tests which greatly stress the knee joint, ie figure-of-eight running and one-legged jump for distance.

A scaling model approach was constructed and found appropriate in evaluating knee and ankle function in patients with ligarnentous injuries.

A dynamic, two-dimensional, biomechanical model was developed and implemented in a motion analysis system together with a force plate and EMG. This model was found useful for evaluation of kinematics, kinetics and muscular activation patterns at the ankle, knee and hip joints during functional movements such as walking and jumping.

A movement analysis could reveal adapted movement- and muscular activation patterns for the ACL-deficient knee compared to the noninjured at touch down at one-legged jump. An internal knee model disclosed a simultaneous decrease in sagittal shear load which was interpreted as an adaptation to avoid increased intrinsic joint movements or gross subluxations.

Unilateral injury to the lateral ligaments of the ankle is related to both ipsi- and contralateral functional alterations. There is a risk of underestimating the impairment of the injured joint in a function test using the noninjured side as a reference.

A perturbation device was construcred and found useful for the analysis of postural strategies, reaction latencies and ankle joint function during single limb stance. The ankle joints were found to be of primary concern for postural corrections to retain equilibrium in single limb stance.

A quasi static, three-dimensional ankle model was developed and implemented in a motion analysis system which made possible study of ankle joint function, load and instability. Different motor patterns were found for the functionally unstable foot compared to the stable in single limb stance.

Place, publisher, year, edition, pages
Linköping: Linköpings universitet , 1991. , 56 p.
Linköping University Medical Dissertations, ISSN 0345-0082 ; 331
National Category
Medical and Health Sciences
URN: urn:nbn:se:liu:diva-28035Local ID: 12796ISBN: 91-7870-620-3OAI: diva2:248586
Public defence
1991-03-22, Berzeliussalen, Universitetssjukhuset, Linköping, 09:00 (Swedish)
Papers, included in the Ph.D. thesis, are not registered and included in the posts from 1999 and backwards.Available from: 2009-10-08 Created: 2009-10-08 Last updated: 2012-07-18Bibliographically approved

Open Access in DiVA

No full text

By organisation
Orthopaedics and Sports MedicineFaculty of Health Sciences
Medical and Health Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 153 hits
ReferencesLink to record
Permanent link

Direct link