The American journal of sports medicine
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Delayed onset of vastus medialis obliquus activity has been described in patellofemoral pain patients. No prospective study investigating the development of patellofemoral pain has tested the onset timing of electromyographic activity of the vastus medialis obliquus and vastus lateralis muscles during a functional task. ⋯ Delayed onset of electromyographic activity of the vastus medialis obliquus-vastus lateralis is one of the contributing risk factors to the development of patellofemoral pain.
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Although labrum lesions in patients with chronic anterior shoulder instability may not only involve detachment of the anteroinferior labrum but a lesion of the superior glenoid labrum as well, no studies have compared the clinical outcome between patients with a lesion of the anteroinferior labrum and patients with a combined lesion of the anterior and superior labrum after arthroscopic shoulder stabilization. ⋯ There are no differences in shoulder stability and function in patients with anterior shoulder instability and a lesion of the anteroinferior labrum and patients with an extended lesion of the anterior and superior labrum after arthroscopic shoulder stabilization.
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In cases of multiple ligament injury or severe medial collateral ligament (MCL) lesion, nonoperative treatment of the MCL lesion may lead to chronic valgus instability or rotatory instability. ⋯ Acceptable clinical results with the MCL reconstruction technique were achieved in patients suffering from chronic valgus instability.
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Patellofemoral lesions represent a very troublesome condition to treat for orthopaedic surgeons; however, second-generation autologous chondrocyte implantation (ACI) seems to offer an interesting treatment option with satisfactory results at short-term follow-up. ⋯ Hyaluronan-based scaffold seeded with autologous chondrocytes can be a viable treatment for patellofemoral chondral lesions.
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The injury rate in soccer is high, and studies have shown that the injury rate among players aged 16 years or older approaches that of adult players. However, little is known about the injury risk among the youngest players, that is, players between 6 and 12 years. ⋯ The injury risk among young players (6-12 years) playing organized 5- or 7-a-side soccer is low, lower than that of adolescents and much lower than at the elite level. Soccer is a safe sport for children.