American Journal of Sports Medicine

Five articles from the January 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 "The Anti-inflammatory and Matrix Restorative Mechanisms of Platelet-Rich Plasma in Osteoarthritis," "Effect of Diet-Induced Vitamin D Deficiency on Rotator Cuff Healing in a Rat Model," "Exertional Heat Stroke Management Strategies in United States High School Football," "Graft Selection in Anterior Cruciate Ligament Reconstruction for Smoking Patients," and "Arthroscopic Labral Reconstruction Is Superior to Segmental Resection for Irreparable Labral Tears in the Hip: A Matched-Pair Controlled Study With Minimum 2-Year Follow-up."

Early recognition of the clinical signs of ruptures of the pectoralis major muscle (PMM) in athletes by orthopaedic surgeons, physical therapists, and physical trainers may prove to be critical for patient access to surgical treatment while the injury is still in the acute phase. Total ruptures of the PMM exhibit better outcomes with surgical treatment than with nonoperative treatment based on the Bak criteria in athletes.

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Five articles from the June 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 "Tendon Contraction After Cyclic Elongation is an Age Dependent Phenomenon: In-vitro and in-vivo comparisons," "Major and Minor League Baseball Hamstring Injuries: Epidemiologic Findings from the Major League Baseball Injury Surveillance System," "Long-term Outcomes After Ulnar Collateral Ligament Reconstruction in Competitive Baseball Players Minimum 10-Year Follow-up," "Arthroscopic Repair of Full Thickness Rotator Cuff Tears With and Without Acromioplasty: Randomized Prospective Trial with Two Year Follow-up," and "Risk-Prone Pitching Activities and Injuries in Youth Baseball: Findings from a National Sample."

Five articles from the May 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 "Survival and Reoperation Rates After Meniscal Allograft Transplantation: Analysis of Failures for 172 Consecutive Transplants at a Minimum 2-Year Follow-up," "Intraobserver and Interobserver Agreement in the Classification and Treatment of Midshaft Clavicle Fractures," "The Effect of Coach Education on Reporting of Concussions Among High School Athletes After Passage of a Concussion Law," "Adverse Event Rates and Classifications in Medial Opening Wedge High Tibial Osteotomy," and "Increased Slope of the Lateral Tibial Plateau Subchondral Bone Is Associated With Greater Risk of Noncontact ACL Injury in Females but Not in Males: A Prospective Cohort Study With a Nested, Matched Case-Control Analysis."

Five articles from the April 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 "Survival and Reoperation Rates After Meniscal Allograft Transplantation: Analysis of Failures for 172 Consecutive Transplants at a Minimum 2-Year Follow-up," "The Role of Immunologic Response in Fresh Osteochondral Allografting of the Knee," "Higher incidence of bone stress injury with increasing female athlete triad risk factors: A prospective multisite study of exercising girls and women," "Increase in Humeral Retrotorsion Accounts for Age-related Increase in Glenohumeral Internal Rotation Deficit in Youth and Adolescent Baseball Players," and "Anatomic Variance of the Iliopsoas Tendon."

Multiple concussions have been associated with prolonged symptoms, recovery time, and risk for future concussions. However, very few studies have examined the effect of multiple concussions on neurocognitive performance and the recently revised symptom clusters using a large database. Concussed athletes with a history of ≥3 concussions take longer to recover than athletes with 1 or no previous concussion. Future research should concentrate on validating the new symptom clusters on multiple concussed athletes, examining longer recovery times (ie, >8 days) among athletes with multiple concussions.

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Five articles from the December 2013 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 "Intercondylar Roof Impingement After Anatomic Double-Bundle Anterior Cruciate Ligament Reconstruction in Patients With Knee Hyperextension," "Posterior Tibial Slope and Further Anterior Cruciate Ligament Injuries in the Anterior Cruciate Ligament?Reconstructed Patient," "Superficial Medial Collateral Ligament Anatomic Augmented Repair versus Anatomic Reconstruction: An In Vitro Biomechanical Analysis," "Complications After Anatomic Fixation and Reconstruction of the Coracoclavicular Ligaments," and "Anatomic and Radiographic Comparison of Arthroscopic Suprapectoral and Open Subpectoral Biceps Tenodesis Sites."

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.

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Five articles from the December 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 "Knee Contact Force Asymmetries in Patients Who Failed Return-to-Sport Readiness Criteria 6 Months After Anterior Cruciate Ligament Reconstruction,” "Return to Play and Recurrent Instability After In-Season Anterior Shoulder Instability: A Prospective Multicenter Study," "Cytotoxic Effects of Ropivacaine, Bupivacaine, and Lidocaine on Rotator Cuff Tenofibroblasts," "Is the Use of Oral Contraceptives Associated With Operatively Treated Anterior Cruciate Ligament Injury?: A Case-Control Study From the Danish Registry of Knee Ligament Reconstruction," "Deficiencies in Pitching Biomechanics in Baseball Players With a History of Superior Labrum Anterior-Posterior Repair."

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.