The American journal of sports medicine
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Lacrosse is a fast growing youth sport in the United States. Although there have been published studies examining injuries associated with lacrosse, significantly less research has been conducted in high school lacrosse players than in older lacrosse players. The objective of this study was to compare high school lacrosse injury rates and patterns by type of athletic activity (ie, competition vs practice) and sex. ⋯ Lacrosse injury rates and patterns among high school athletes in the United States differ by type of athletic activity and sex. Future studies should continue to compare differences in injury rates and patterns in high school lacrosse, with particular emphasis placed on high-risk plays in competition and the prevention and management of concussions in both boys and girls.
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Autologous chondrocyte implantation (ACI) using tissue-engineered cartilage is a successful therapy for full-thickness cartilage lesions in the knee joint. However, in vivo graft maturation is still unclear. ⋯ The T2 relaxation time in the repaired tissue showed similar values compared with normal hyaline cartilage. Graft maturation after ACI in the knee joint needs at least 1 year, with ongoing adjustment of the T2 relaxation time values compared with native surrounding cartilage. A correlation between increasing ACI graft maturation and clinical outcomes (IKDC score) could not be found with the data available.
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Multicenter Study
Meniscal repair with concurrent anterior cruciate ligament reconstruction: operative success and patient outcomes at 6-year follow-up.
Meniscal repair is commonly performed concurrently with anterior cruciate ligament reconstruction (ACLR) in the acutely injured knee. No large-scale, prospective multicenter studies have evaluated the long-term success and patient-oriented outcomes after combined ACLR and meniscal repair. ⋯ Concurrent meniscal repair with ACLR is associated with failure rates approximating 14% at 6-year follow-up. Improvements in patient-oriented outcome scores were sustained at 6-year follow-up. Surgeons may expect good clinical outcomes 6 years after combined ACLR and meniscal repair.
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Randomized Controlled Trial
The influence of cervical muscle characteristics on head impact biomechanics in football.
An athlete is thought to reduce head acceleration after impact by contracting the cervical musculature, which increases the effective mass of the head. ⋯ The study findings showed that greater cervical stiffness and less angular displacement after perturbation reduced the odds of sustaining higher magnitude head impacts; however, the findings did not show that players with stronger and larger neck muscles mitigate head impact severity.
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Surgical repair remains the gold standard for most type II and type IV superior labral anterior and posterior (SLAP) lesions that fail nonoperative management. However, most recently, there have been data demonstrating unacceptably high failure rates with primary repair of type II SLAP lesions. Biceps tenodesis may offer an acceptable, if not better, alternative to primary repair of SLAP lesions. ⋯ This study adds to the evolving literature supporting biceps tenodesis as a viable treatment for type II and IV SLAP lesions. Patient age had no effect on the outcomes. Based on these results, biceps tenodesis is a safe, effective, and technically straightforward alternative to primary SLAP repair in patients with type II and IV SLAP tears.