BACKGROUND Although numerous anatomic studies about the anterior cruciate ligament (ACL) structure and attachments have been performed, these studies have not reached consensus on the ACL footprint. PURPOSE To investigate the existing controversy regarding the morphology of the tibial ACL insertion (footprint) and confirm histologically that the tibial ACL footprint is not completely filled w...

Introduction There is ample evidence that the anterior cruciate ligament (ACL) has a sensory function. Previous studies reported that afferent feedback from ACL contributed to increased tone of the muscles around the knee. However, it is unlikely that afferent feedback from ACL directly alter a motor neuron (MN); afferents from ACL could influence a motor neuron (MN) via the ? loop. Therefore, ...

Abstract Introduction Anterior cruciate ligament (ACL) is a common injury and more than 100,000 ACL reconstruction procedures are performed in the United States every year. Although widely accepted and investigated, ACL reconstruction still continues to evolve and many technical issues are under debate. They mainly include: 1) graft selection, 2) surgical technique (double versus single bundle)...

M.M. Murray et al. (eds.), The ACL Handbook: Knee Biology, Mechanics, and Treatment, DOI 10.1007/978-1-4614-0760-7_2, © Springer Science+Business Media New York 2013 ACL injuries are increasingly common, with estimates as high as of 400,000 patients each year in the United States sustaining this injury (in comparison with 120,000 patients undergoing hip replacement surgery) [ 1 ]. The ACL injur...

BACKGROUND The functional disability and high costs of treating anterior cruciate ligament (ACL) injuries have generated a great deal of interest in understanding the mechanism of noncontact ACL injuries. Secondary bone bruises have been reported in over 80% of partial and complete ACL ruptures. PURPOSE The objectives of this study were (1) to quantify ACL strain under a range of physiologica...

BACKGROUND Recently, anatomic anterior cruciate ligament (ACL) reconstruction is emphasized to improve joint laxity and to potentially avert initiation of cartilage degeneration. There is a paucity of information on the efficacy of ACL reconstructions by currently practiced tunnel creation techniques in restoring normal joint laxity. STUDY DESIGN Controlled laboratory study. HYPOTHESIS Ante...

BACKGROUND Ballet and modern dance are jump-intensive activities, but little is known about the incidence of anterior cruciate ligament (ACL) injuries among dancers. HYPOTHESIS Rigorous jump and balance training has been shown in some prospective studies to significantly reduce ACL injury rates among athletes. Dancers advance to the professional level only after having achieved virtuosic jump...

BACKGROUND Injury patterns of the meniscus following impact trauma resulting in anterior cruciate ligament (ACL) rupture are not well understood. This study explored the spatial and temporal distribution of meniscal tears in a novel in vivo lapine model. METHODS Skeletally mature Flemish Giant rabbits were subjected to either tibiofemoral impaction resulting in ACL rupture or surgical ACL tra...