The American journal of sports medicine
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Meniscus allograft transplantation (MAT) has shown efficacy in relieving pain and improving knee joint function, but objective evaluation in a large number of patients is necessary to verify this effect. ⋯ Meniscus allograft transplantation using bone fixation resulted in significant symptomatic and functional improvements. Magnetic resonance imaging or second-look arthroscopy was necessary to assess allograft status even after favorable clinical outcome. Meniscus allograft transplantation with bone fixation is considered effective for symptomatic, totally meniscectomized knees.
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Prognostic factors of arthroscopic pull-out repair for a posterior root tear of the medial meniscus.
Repair of a posterior root tear of the medial meniscus (MRT) decreases peak contact pressure by restoring hoop tension and is expected to prevent progression to osteoarthritis. ⋯ At a mean follow-up of 33 months after pull-out repair, extrusion of the meniscus was found to have progressed. Nevertheless, this technique provided patients with a clinical benefit. Outerbridge grade 3 or 4 chondral lesions and varus alignment of >5° were found to independently predict an inferior clinical outcome.
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Platelet-rich plasma (PRP) contains various growth factors and appears to have a potential to promote tendon healing, but evidence is lacking regarding its effect on human tenocytes from rotator cuff tendons with degenerative tears. ⋯ These findings suggest that PRP might be used as a useful biological tool for regenerative healing of rotator cuff tears by enhancing the proliferation and matrix synthesis of tenocytes from tendons with degenerative tears.
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Injuries to the anterior cruciate ligament (ACL) are common in athletic populations, particularly in athletes participating in football, soccer, and skiing. ⋯ Between 2004 and 2009, NCAA football players experienced a greater number of ACL injuries in games compared with practices, in scrimmages compared with regular practices, and when playing on artificial turf surfaces. This latter finding will need to be confirmed by additional studies.
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Comparative Study
Comparison of partial versus complete arthroscopic repair of massive rotator cuff tears.
Complete repair of massive rotator cuff tears can be limited by tendon retraction and poor tissue quality. When a complete repair cannot be accomplished, a significant partial repair may be possible. ⋯ Partial repair of massive rotator cuff tears yielded outcomes comparable with complete repair of massive tears.