Model predictions of increased knee joint loading in regions of thinner articular cartilage after patellar tendon adhesion

Fernandez, Justin W., Akbarshahi, Massoud, Crossley, Kay M., Shelburne, Kevin B. and Pandy, Marcus G. (2011) Model predictions of increased knee joint loading in regions of thinner articular cartilage after patellar tendon adhesion. Journal of Orthopaedic Research, 29 8: 1168-1177. doi:10.1002/jor.21345


Author Fernandez, Justin W.
Akbarshahi, Massoud
Crossley, Kay M.
Shelburne, Kevin B.
Pandy, Marcus G.
Title Model predictions of increased knee joint loading in regions of thinner articular cartilage after patellar tendon adhesion
Journal name Journal of Orthopaedic Research   Check publisher's open access policy
ISSN 0736-0266
1554-527X
Publication date 2011-08-01
Sub-type Article (original research)
DOI 10.1002/jor.21345
Volume 29
Issue 8
Start page 1168
End page 1177
Total pages 10
Place of publication Hoboken, NJ, United States
Publisher John Wiley and Sons
Collection year 2012
Language eng
Formatted abstract
Patellar tendon adhesion is a complication from anterior cruciate ligament (ACL) reconstruction that may affect patellofemoral and tibiofemoral biomechanics. A computational model was used to investigate the changes in knee joint mechanics due to patellar tendon adhesion under normal physiological loading during gait. The calculations showed that patellar tendon adhesion up to the level of the anterior tibial plateau led to patellar infera, increased patellar flexion, and increased anterior tibial translation. These kinematic changes were associated with increased patellar contact force, a distal shift in peak patellar contact pressure, a posterior shift in peak tibial contact pressure, and increased peak tangential contact sliding distance over one gait cycle (i.e., contact slip). Postadhesion, patellar and tibial contact locations corresponded to regions of thinner cartilage. The predicted distal shift in patellar contact was in contrast to other patellar infera studies. Average patellar and tibial cartilage pressure did not change significantly following patellar tendon adhesion; however, peak medial tibial pressure increased. These results suggest that changes in peak tibial cartilage pressure, contact slip, and the migration of contact to regions of thinner cartilage are associated with patellar tendon adhesion and may be responsible for initiating patellofemoral pain and knee joint structural damage observed following ACL reconstruction
Keyword Knee Osteoarthritis
Patellar infera
Patellofemoral biomechanics
Anterior Cruciate Ligament
Cruciate Ligament Reconstruction
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ
Additional Notes Received 10 June 2010; accepted 6 December 2010; Published online 7 March 2011 in Wiley Online Library

Document type: Journal Article
Sub-type: Article (original research)
Collections: Non HERDC
School of Health and Rehabilitation Sciences Publications
 
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