The American journal of sports medicine
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Randomized Controlled Trial Comparative Study
Arthroscopic reconstruction of the anterior cruciate ligament with hamstring tendon autograft and fresh-frozen allograft: a prospective, randomized controlled study.
Most studies of allograft versus autograft for anterior cruciate ligament reconstruction have been of bone-patellar tendon-bone; outcome reports evaluating anterior cruciate ligament reconstruction with hamstring tendon autograft versus allograft are rare. ⋯ Both groups of patients achieved almost the same satisfactory outcome at an average of 7.8 years of follow-up. Fresh-frozen hamstring tendon allograft is a reasonable alternative choice to autograft for anterior cruciate ligament reconstruction.
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Acetabular labrum tears are now commonly diagnosed in young and active patients. Because the role of the acetabular labrum is incompletely understood, it is critical to determine how these tears affect native hip biomechanics. ⋯ The findings suggest that the acetabular labrum continues to function to resist femoral head translation despite chondral-labral separation and that labral preservation, particularly with larger tears, may be important for maintaining hip stability. Further studies are needed to determine the effect of partial labral excision on the stability ratio with the hip in provocative positions such as extension, external rotation, and abduction.
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Clinical Trial
Arthroscopically assisted stabilization of acute high-grade acromioclavicular joint separations.
The purpose of this study was to evaluate the clinical and radiological results after arthroscopically assisted and image intensifier--controlled stabilization of high-grade acromioclavicular (AC) joint separations using the double TightRope technique with the first-generation implant. ⋯ The combined arthroscopically assisted and image intensifier--controlled double TightRope technique using implants of the first-generation represents a safe technique and yields good to excellent early clinical results despite the presence of partial recurrent vertical and horizontal AC joint instability.
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Patellar dislocation is a common traumatic injury in the pediatric and adolescent population. The primary constraint to lateral subluxation and dislocation of the patella is the medial patellofemoral ligament (MPFL), which serves to resist lateral translation of the patella. Injury to the MPFL may predispose to recurrent dislocation but the anatomic site of injury is poorly characterized in children and adolescents. ⋯ The zone of MPFL injury in a pediatric population after primary patellar dislocation was predominantly isolated to the patellar attachment (61%), in contrast to previous literature. Twelve percent of patients had injury only at the femoral attachment, while 12% of patients had injury to both the patellar and femoral attachments. The remaining 15% had injury at multiple locations or no identifiable injury. The MRI finding that the anatomic insertion of the MPFL is distal to the physis in 93% of patients and that the MPFL is more likely to be injured at the patellar attachment has important implications in the surgical reconstruction of the MPFL in pediatric or adolescent patients.
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Snowkiting is becoming an increasingly popular extreme sport; however, its injury rates and patterns are unknown to date. ⋯ Snowkiting can be considered a sport carrying a high risk of injury. More caution in assessing local snow conditions and wind gust occurrences is recommended as well as considering using the help and advice of a professional instructor when beginning this action-packed sport. Injury prevention strategies should also include the further improvement of currently available safety equipment.