The Relationship Between Anterior-Posterior Knee Laxity and the Structural Properties of the Patellar Tendon Graft
| Autor: | Harukazu Toyama, Richard A. Fischer, Bruce D. Beynnon, Robert J. Johnson, Steven W. Arms, Per A. Renström |
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| Rok vydání: | 1994 |
| Předmět: |
musculoskeletal diseases
medicine.medical_specialty Knee Joint Anterior cruciate ligament Physical Therapy Sports Therapy and Rehabilitation Tendons 03 medical and health sciences Dogs 0302 clinical medicine Tensile Strength medicine Animals Orthopedics and Sports Medicine Femur Tibia Anterior posterior Anterior Cruciate Ligament Inverse correlation 030222 orthopedics business.industry 030229 sport sciences musculoskeletal system Patellar tendon Biomechanical Phenomena Surgery medicine.anatomical_structure Knee laxity business human activities |
| Zdroj: | The American Journal of Sports Medicine. 22:812-820 |
| ISSN: | 1552-3365 0363-5465 |
| DOI: | 10.1177/036354659402200613 |
| Popis: | We studied the relationship between anterior-posterior knee laxity and the structural properties of autogenous patellar tendon grafts used to replace the anterior cruciate ligaments in dogs 1 year after reconstruction. At 30 degrees (full extension for the dog), 60 degrees, and 90 degrees of flexion a significant inverse correlation was found between anterior-posterior knee laxity and the ultimate failure strength of the graft. Likewise, at 60 degrees and 90 degrees of flexion a significant inverse correlation was found between knee laxity and the linear stiffness of the graft. In all cases, as knee laxity increased, the ultimate failure load and linear stiffness values of the graft were found to decrease. There was also a significant increase in anterior-posterior knee laxity of the reconstructed knees (produced by an increase in anterior translation of the tibia relative to the femur) compared with the contralateral control knee. The group of dogs that underwent a sham operation without reconstruction of the anterior cruciate ligament had no change in anterior-posterior knee laxity or the structural properties of the anterior cruciate ligament. The clinical significance of this investigation is that knee laxity measurements demonstrating an increase in anterior translation of the tibia relative to the femur during graft healing may indicate that the graft has weakened and reduced structural properties. |
| Databáze: | OpenAIRE |
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