American Journal of Sports Medicine

It is commonly accepted that the anterolateral (AL) bundle of the posterior cruciate ligament (PCL) is tight in flexion and that the posteromedial (PM) bundle is tight in extension. However, a recent in vivo study showed that both bundles were tight in extension. Both bundles of the PCL may serve a greater functional role in flexion than in extension. The PM bundle might be more important for the control of rotation than the AL bundle. Posterior translation at 90° of knee flexion could be the most stressful condition for both bundles of the PCL, which may have implications for an injury mechanism.

Click here to read the article.

While a vast body of literature exists describing biceps tenodesis techniques and evaluating the biomechanical aspects of tenodesis locations or various implants, little literature presents useful clinical outcomes to guide surgeons in their decision to perform a particular method of tenodesis. Both ASPBT and OSPBT yield excellent clinical and functional results for the management of isolated superior labrum or long head of the bicepslesions. No significant differences in clinical outcomes as determined by several validated outcome measures were found between the 2 tenodesis methods, nor were any significant range of motion or strength deficits noted at a minimum 2years postoperatively.

Click here to read the article.

Five articles from the November 2014 issue summarized in five minutes, with the addition of a brief editorial commentary. The 5-in-5 feature is designed to give readers an overview of articles that may pique their interest and encourage more detailed reading. It may also be used by busy readers who would prefer a brief audio summary in order to select the articles they want to read in full. The featured articles for this month are "Energy Flow Analysis During the Tennis Serve Comparison Between Injured and Noninjured Tennis Players," "Hip Range of Motion and Association With Injury in Female Professional Tennis Players," "Improved Outcomes After Hip Arthroscopic Surgery in Patients Undergoing T-Capsulotomy With Complete Repair Versus Partial Repair for Femoroacetabular Impingement: A Comparative Matched-Pair Analysis," "Anterior Cruciate Ligament Tears in Children and Adolescents: A Meta-analysis of Nonoperative Versus Operative Treatment," and "Is Arthroscopic Distal Clavicle Resection Necessary for Patients With Radiological Acromioclavicular Joint Arthritis and Rotator Cuff Tears?: A Prospective Randomized Comparative Study."

Five articles from the October 2014 issue summarized in five minutes, with the addition of a brief editorial commentary. The 5-in-5 feature is designed to give readers an overview of articles that may pique their interest and encourage more detailed reading. It may also be used by busy readers who would prefer a brief audio summary in order to select the articles they want to read in full. The featured articles for this month are “Posterior Cruciate Ligament Graft Fixation Angles, Part 1: Biomechanical Evaluation for Anatomic Single-Bundle Reconstruction," “Posterior Cruciate Ligament Graft Fixation Angles, Part 2: Biomechanical Evaluation for Anatomic Double-Bundle Reconstruction,” "Comparison of Allograft Versus Autograft Anterior Cruciate Ligament Reconstruction Graft Survival in an Active Adolescent Cohort," "Radiographic Landmarks for Locating the Femoral Origin and Tibial Insertion of the Knee Anterolateral Ligament," and "Platelet-Rich Plasma Injections for the Treatment of Hamstring Injuries: A Randomized Controlled Trial."

Most surgeons believe that graft choice for anterior cruciate ligament (ACL) reconstruction is an important factor related to outcome; however, graft choice for revision may be limited due to previously used grafts. Improved sports function and patient-reported outcome measures are obtained when an autograft is used. Additionally, use of an autograft shows a decreased risk in graft rerupture at 2-year follow-up. No differences were noted in rerupture or patient-reported outcomes between soft tissue and bone–patellar tendon–bone grafts. Surgeon education regarding the findings of this study has the potential to improve the results of revision ACL reconstruction.

Click here to read the article.

Click here to read the article.

5 articles in 5 minutes from the AJSM September 2014 issue.

5 articles in 5 minutes from the AJSM August 2014 issue.

An anterior cruciate ligament (ACL) injury greatly increases the risk for premature knee osteoarthritis (OA). Improved diagnosis and staging of early disease are needed to develop strategies to delay or prevent disabling OA. This study shows that novel UTE-T2* mapping demonstrates changes in cartilage deep tissue health according to joint injury status as well as a potential for articular cartilage and menisci to heal deep tissue injuries. Further clinical studies of UTE-T2* mapping are needed to determine if it can be used to identify joints at risk for rapid degeneration and to monitor effects of new treatments to delay or prevent the development of OA.

Click here to read the article.

5 articles in 5 minutes from the AJSM July 2014 issue.