Instructional course lectures
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Performing hip arthroscopy with the patient in the lateral decubitus position is advantageous in aiding in visualization of the hip joint, in maneuvering instruments in obese patients, and in facilitating entry to the hip joint in patients with spurs on the anterolateral aspect of the acetabulum. The patient is placed in the lateral decubitus position with the hip on which the surgery is being performed on the top. The leg is placed in traction and a well-padded perineal post is applied for countertraction. ⋯ A regular traction table requires adjustments of the perineal and traction posts to apply traction to the leg of a patient in the lateral decubitus position. Special traction devices make setup easier. The lateral approach to hip arthroscopy provides a safe and consistent method of entering, visualizing, and performing surgical procedures on the hip.
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A concussion is defined as a complex pathophysiologic process affecting the brain that is induced by traumatic biomechanical forces. Concussions are caused by a direct or indirect blow that leads to a graded set of syndromes characterized by functional rather than structural disturbances to the brain. Concussions are characterized by a wide variety of presenting symptoms, including loss of consciousness, amnesia, confusion, headache, and nausea. ⋯ Computerized neuropsychologic testing is a new tool in the treatment of concussions. These tests measure memory, new learning, attention, and reaction time and should be used as an adjunct to other tools for clinical decision making. Published guidelines will assist in treatment decisions; however, it should be kept in mind that all concussions are unique injuries.
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The evaluation of injury of the cervical spine in children is complicated by biomechanics of the pediatric cervical spine that differ from those in the adult, by incomplete maturation and ossification of the vertebral segments, and by difficulties the physician may have in communicating with the child. Because the upper cervical region, from occiput to C2, is most susceptible to injury in children, it is important to have an understanding of mechanisms of injury, diagnostic imaging modalities, and therapeutic interventions. A clear understanding of adult and pediatric cervical spine differences will facilitate early diagnosis and appropriate treatment of cervical spine injuries in young children.
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The Smith-Petersen osteotomy has been a mainstay in the treatment of sagittal deformity since it was first described in 1945. The primary indication for an osteotomy is fixed sagittal deformity. When an osteotomy is performed in a patient with ankylosing spondylitis, it can be combined with an anterior column osteoclasis to achieve a correction of up to 40 degrees to 50 degrees. When performed for other indications, the osteotomy can result in approximately 10 degrees of correction per level treated.
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Although total hip arthroplasty has been shown to be an effective surgical procedure, long-term outcomes are compromised by wear of the bearing surfaces. Recent technologic advances have been made in the design of bearing surfaces that offer extended performance to these artificial joints.