Knee mechanics during landing in anterior cruciate ligament patients: A longitudinal study from pre- to 12months post-reconstruction

Research output: Contribution to journalJournal articlesResearchpeer-review

Authors

Research units

Details

BACKGROUND: Patients with a history of anterior cruciate ligament rupture are at elevated risk of developing knee osteoarthritis. Altered knee kinematics and kinetics during functional activities have been viewed as risk factors for cartilage breakdown and, therefore, one of the primary goals of anterior cruciate ligament reconstruction is to restore knee joint function.

METHODS: Patients' (n=18) knee mechanics while performing a single leg hop for distance were calculated for both legs using a soft-tissue artifact optimized rigid lower-body model at the pre-reconstruction state and six and twelve months after anterior cruciate ligament reconstruction.

FINDINGS: Independent of the analyzed time point the involved leg showed a lower external flexion and adduction moment at the knee, and an increased anterior translation and external rotational offset of the shank with respect to the thigh compared to the uninvolved leg. There were no differences for any of the analyzed knee kinematic and kinetic parameters within the control subject group.

INTERPRETATION: The identified kinematic changes can cause a shift in the normal load-bearing regions of the knee and may support the view that the risk of developing knee osteoarthritis in an anterior cruciate ligament ruptured joint while performing activities involving frequent landing and stopping actions is less likely to be associated with the knee adduction moment and is rather due to kinematic changes. Anterior cruciate ligament reconstruction surgery failed to restore normal knee kinematics during landing, potentially explaining the persistent risk for the development of knee osteoarthritis in patients who have returned to sports following reconstruction surgery.

Original languageEnglish
JournalClinical biomechanics (Bristol, Avon)
Volume29
Issue number5
Pages (from-to)512-17
Number of pages6
ISSN0268-0033
DOIs
Publication statusPublished - 01.05.2014

ID: 43429

View graph of relations