Knee instability: isolated and complex

23Na MR Imaging at 7 T after Knee Matrix–associated Autologous Chondrocyte Transplantation Preliminary Results

“…All patients with implanted metal devices were excluded from the study. Further exclusion criteria were contraindications to contrast agentenhanced MR imaging, advanced OA, meniscal tear, knee joint instability assessed by using standard clinical testing ( 29 ), ligament injuries excluded on the basis of morphologic MR evaluations, and surgical procedures in the knee joint prior to the study. Two imaged patients were excluded: a 60-year-old woman with very thin cartilage owing to severe OA and a 53-year-old man in whom imaging was not successfully accomplished owing to technical problems.…”

Determining the relationship between tibiofemoral geometry and passive motion with partial least squares regression

“…The geometric constraints contribute to the six degree‐of‐freedom (6‐DOF) passive motion of the tibiofemoral joint in the physiological range 6,7 . There is high intersubject variability in tibiofemoral geometry and motion across the population, while specific geometrical features have been associated with pathologies such as anterior cruciate ligament injury, 8 joint instability, 9 and knee osteoarthritis 10 . Therefore, understanding the influence of tibiofemoral joint geometry on passive motion in a normal population can provide insight into knee function and the mechanisms of injury.…”

“…while specific geometrical features have been associated with pathologies such as anterior cruciate ligament injury, 8 joint instability, 9 and knee osteoarthritis. 10 Therefore, understanding the influence of tibiofemoral joint geometry on passive motion in a normal population can provide insight into knee function and the mechanisms of injury.…”

Biomechanical and neurocognitive risk factors associated with anterior cruciate ligament injuries

“…As such, the stability of the knee joint in the frontal plane mainly depends on passive tissues. The medial and lateral collateral ligaments provide frontal plane stability by restricting valgus and varus rotation respectively (Kakarlapudi, 2000). Additionally, the anterior and posterior cruciate ligaments of the knee joint, located within the intercondylar notch, restrict tibial translation in the anterior and posterior directions respectively .…”