Arthroscopy : the journal of arthroscopic & related surgery : official publication of the Arthroscopy Association of North America and the International Arthroscopy Association
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Our aim was to determine the outcome of arthroscopic-assisted reduction with bilateral buttress plate fixation for the treatment of closed complex tibial plateau fractures. ⋯ Arthroscopic-assisted reduction with bilateral buttress plate fixation for complex tibial plateau fractures allows accurate fracture reduction, diagnosis, and treatment of associated intra-articular lesions, and less dissection than open reduction internal fixation.
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A unique case is described involving the arthroscopic removal of a bullet in the wall of the acetabulum from a low-velocity gunshot wound. The projectile entered the abdomen anteriorly and penetrated the urinary bladder and the inner wall of the acetabulum before becoming embedded intra-articularly in the subchondral bone of the hip joint. ⋯ No complications were encountered. Arthroscopy allowed adequate inspection of the articular surface, irrigation of the joint, and removal of the foreign body while avoiding an invasive arthrotomy with its associated morbidity and soft tissue disruption.
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Many studies in orthopaedics and sports medicine have not considered sample size or statistical power as important issues in study design. This article addresses the importance of a sample size calculation in randomized clinical trials and the components of the calculations that researchers must consider in their preliminary planning of an investigation. The types of data being collected, level of significance, types I and II errors, and power are also addressed.