Injuries of the anterior cruciate ligament are commonly encountered in clinical practice, and occur in a wide variety of settings, from sports-related injuries to polytrauma. Tears of the anterior cruciate ligament supersede osseous avulsion in the adult demographic; however, in the pediatric population, osseous avulsion reflects the most frequent injury. When osseous avulsion of the anterior c...

The incidence of severe anterior cruciate ligament sprains was once only a third the current rate. This fact led the authors to believe a means to help reduce the risk of anterior cruciate ligament injury among skiers might be found. Using videotapes of the occurrences of anterior cruciate ligament sprains in alpine skiers and the data associated with more than 1400 anterior cruciate ligament i...

BACKGROUND It is possible that gait abnormalities may play a role in the pathogenesis of meniscal or chondral injury as well as osteoarthritis of the knee in patients with anterior cruciate ligament deficiency. HYPOTHESIS The three-dimensional kinematics of anterior cruciate ligament-deficient knees are changed even during low-stress activities, such as walking, but can be restored by reconst...

BACKGROUND Noncontact anterior cruciate ligament injuries occur two to eight times more often in women than in men. Changes in ligament laxity and strength have been associated with female hormones such as relaxin. HYPOTHESIS Relaxin receptors are present within the female anterior cruciate ligament. STUDY DESIGN Controlled laboratory study. METHODS Remnants of anterior cruciate ligament ...

Anterior cruciate ligament reconstruction is performed as an outpatient procedure in selected cases. Whether it can be safely performed on a routine basis in day clinic remains unclear. Our hypothesis was that routinely performing outpatient anterior cruciate ligament reconstruction would be equally safe as compared to inpatient procedures. A cohort of 355 patients who underwent outpatient prim...

BACKGROUND Following anterior cruciate ligament injury and subsequent reconstruction transverse plane tibiofemoral rotation becomes underconstrained and overconstrained, respectively. Conflicting reports exist on how rotations influence loading at the knee. This investigation aimed to determine the mechanical effects of internal and external tibial rotation offsets on knee kinematics and ligame...

Arthrometry has an established role in the measurement of knee laxity in anterior cruciate ligament injury and following reconstruction. The role of routine intraoperative arthrometry in anterior cruciate ligament reconstruction is poorly defined, and this study was designed to test the hypothesis that intraoperative arthrometry provides an objective method of documenting successful knee stabil...

BACKGROUND Distal femoral fracture is a rare, but significant, postoperative complication of anterior cruciate ligament reconstruction. However, there has not been a reported case of periprosthetic total knee arthroplasty fracture associated with a previous anterior cruciate ligament repair. CASE PRESENTATION We report the case of a 51-year-old white man with a history of total knee arthropla...

BACKGROUND The results of revision anterior cruciate ligament reconstruction are limited in the current literature, and no studies have previously documented the outcome of revision anterior cruciate ligament reconstruction using solely hamstring tendon grafts. HYPOTHESIS Revision anterior cruciate ligament reconstruction with 4-strand hamstring tendon graft affords acceptable results and is ...

Abnormal anterior translation of the femur on the tibia has been observed in mid flexion (20-60 degrees ) following posterior stabilized total knee arthroplasty. The underlying biomechanical causes of this abnormal motion remain unknown. The purpose of this study was to isolate the effects of posterior cruciate ligament removal on knee motion after total knee arthroplasty. We posed two question...