Effects of a Knee Extension Constraint Brace on Lower Extremity Movements after ACL Reconstruction

Background  

Patients have high reinjury rates after ACL reconstruction. Small knee flexion angles and large peak posterior ground reaction forces in landing tasks increase ACL loading.     

Intensity of physiotherapy after anterior cruciate ligament reconstruction: a comparison of two rehabilitation regimen

Background  

Rehabilitation is one of the most critical points after anterior cruciate ligament (ACL) reconstruction. However, the recent trend of low-cost, short-term hospitalization makes sufficient rehabilitation after ACL reconstruction difficult.     

Non-operative treatment of ACL rupture with mild instability

Purpose  

This study examined whether or not conservative treatment of an acutely injured anterior cruciate ligament (ACL) could be successful in a select group of patients. Routine ACL reconstruction surgery in all acute ACL-injured patients should be avoided. We hypothesize that acutely injured ACL with mild instability at the initial physical examination could be improved even if there is disruption of ACL fibers on magnetic resonance images (MRI).     

Effect of estrogen on tissue elasticity of the ligament proper in rabbit anterior cruciate ligament: measurements using scanning acoustic microscopy

Background  

Previous epidemiological studies revealed that anterior cruciate ligament (ACL) injuries were more frequently seen in female athletes than in male athletes. To elucidate the pathogenetic roles of estrogen in ACL ruptures, the elasticity of ACL tissue was measured using a scanning acoustic microscope (SAM) in an estrogen-controlled animal model.     

Anterior cruciate ligament integrity in osteoarthritis of the knee in patients undergoing total knee replacement

Background  

Anterior cruciate ligament (ACL) rupture has been implicated in the development of knee osteoarthritis (OA). This study aimed at determining the incidence of prior ACL deficiency in patients undergoing total knee replacement (TKR), the effect of prior ACL deficiency on function and the macroscopic and microscopic appearance of the ligament.     

Association between intercondylar notch narrowing and bilateral anterior cruciate ligament injuries in athletes

Background  

Intercondylar notch narrowing is a risk factor for anterior cruciate ligament (ACL) injuries, but it is unclear whether a narrow intercondylar notch correlates with bilateral ACL injuries.     

Double-bundle reconstruction cannot restore intact knee kinematics in the ACL/LCL-deficient knee

Introduction  

The aim of this study was to evaluate the effect of single-bundle (SB) and anatomic double-bundle (DB) anterior cruciate ligament (ACL) reconstruction on the resulting knee kinematics in a simulated clinical setting with ACL rupture and associated extra-articular damage to the lateral structures. It was hypothesized that anatomic DB ACL reconstruction restores the intact knee kinematics in ACL/LCL-deficient knees, whereas SB ACL reconstruction fails to restore the intact knee kinematics.     

Surgical Technique: Does Mini-invasive Medial Collateral Ligament and Posterior Oblique Ligament Repair Restore Knee Stability in Combined Chronic Medial and ACL Injuries?

Background  

Residual laxity remains after ACL reconstruction in patients with combined chronic ACL and medial instability. The question arises whether to correct medial capsular and ligament injuries when Grade II and III medial laxity is present.     

Biomechanical evaluation of different anterior cruciate ligament fixation techniques for hamstring graft

Background  

A number of anterior cruciate ligament (ACL) fixation techniques are currently in use. Slippage or failure of the graft by excessive loading or aggressive rehabilitation may result in an unstable knee. Load and slippage of the ACL graft varies according to the fixation technique used.     

The 2012 ABJS Nicolas Andry Award: The Sequence of Prevention: A Systematic Approach to Prevent Anterior Cruciate Ligament Injury

Background  

ACL injuries are common, often devastating injuries that lead to short-term disability and long-term sequelae, many of which lack effective treatment, such as osteoarthritis. Therefore, prevention of ACL injury is currently the only effective intervention for these life-altering sequelae, while much of the literature has a rehabilitative focus.     

Revision ACL Reconstruction in Skeletally Mature Athletes Younger Than 18 Years

Background  

Young, active, skeletally mature patients have higher failure rates after various surgical procedures, including stabilization for shoulder instability and primary ACL reconstruction. It is unclear whether young, active, skeletally mature patients share similarly high failure rates after revision ACL reconstruction.     

Males still have limb asymmetries in multijoint movement tasks more than 2 years following anterior cruciate ligament reconstruction

Background  

More than 2 years after undergoing anterior cruciate ligament (ACL) reconstruction, women still present bilateral asymmetries during multijoint movement tasks. Given the well-known ACL-injury gender bias, the goal of this study was to investigate whether males also present such asymmetries more than 2 years after undergoing ACL reconstruction.     

Tunnel position and graft orientation in failed anterior cruciate ligament reconstruction: a clinical and imaging analysis

Purpose  

It has been reported that technical error in positioning the graft tunnel is the most common problem in anterior cruciate ligament (ACL) reconstruction. The objective of this study was to quantitatively evaluate femoral and tibial tunnel positions and intra-articular graft orientation of primary ACL reconstruction in patients who had undergone revision ACL reconstruction. We postulated that this patient cohort had a nonanatomically positioned tunnel and graft orientation.     

The in vitro elution characteristics of vancomycin from tendons

Background  

Infection after ACL reconstruction is uncommon but catastrophic. Prophylactic graft saturation in vancomycin reportedly reduces infection rates.     

Arthroscopic Avulsion Repair of a Pediatric ACL with an Anomalous Primary Insertion into the Lateral Meniscus

Background  

Injury to the anterior cruciate ligament (ACL) in the pediatric population is becoming more common, with the majority of ruptures occurring at the tibial insertion site. However, to our knowledge, there are no reports of avulsion in which the primary ACL insertion site is the anterior lateral meniscal root.     

Total knee arthroplasty for advanced osteoarthritis in the anterior cruciate ligament deficient knee

Purpose  

Little is known about intra-operative difficulties and outcomes of TKA in ACL deficient knees.     

Is Correctional Osteotomy Crucial in Primary Varus Knees Undergoing Anterior Cruciate Ligament Reconstruction?

Background  

Valgus high tibial osteotomy (HTO) has been recommended for ligament stability and enhanced function after anterior cruciate ligament (ACL) reconstruction in varus-angulated knees. However, it is not clear whether HTO should be performed in patients undergoing ACL reconstruction who have primary varus knees without medial compartment arthrosis.     

Double-bundle ACL reconstruction: influence of femoral tunnel orientation in knee laxity analysed with a navigation system – an in-vitro biomechanical study

Background  

This paper reports an in-vitro study for evaluating the influence of the femoral tunnel orientation in anterior cruciate ligament (ACL) double-bundle reconstructions.     

Graft selection in arthroscopic anterior cruciate ligament reconstruction

Background  

Anterior cruciate ligament (ACL) surgical reconstruction is performed with the use of an autogenic, allogenic or synthetic graft. The document issued by the Italian National Guidelines System (SNLG, Sistema Nazionale Linee Guida) at the National Institute of Health aims to guide orthopaedic surgeons in selecting the optimal graft for ACL reconstruction using an evidence-based approach.     

Diagnosis and treatment of ganglion cysts of the cruciate ligaments

Objective  

To explore the diagnosis and treatment of ganglion cysts of the anterior cruciate ligament (ACL) and posterior cruciate ligament (PCL) of the knees.