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The adverse effects of excessive tourniquet pressure on underlying muscle were studied using a cat model. A direct effect of the magnitude of tourniquet pressure on the degree of muscle disability was observed. The effect of direct pressure on the muscle may contribute to the postoperative weakness seen in the quadriceps muscle. Our data, in conjunction(More)
Thirty-three patients who had cerebral palsy and scoliosis underwent posterior spinal fusion with Luque-rod segmental instrumentation. The mean curve measured 65 degrees preoperatively and 30 degrees postoperatively. The mean loss of correction was 3 degrees after a mean length of follow-up of forty months. As of the time of writing, pseudarthrosis had not(More)
Rheumatoid arthritis (RA) affects the articular surfaces and the ligamentous supporting structures of synovial-lined joints. In approximately one-fourth of the patients with RA, the sacroiliac joints demonstrate radiographic changes of subchondral bony erosions and articular destruction, as well as ankylosis. Subluxation or dislocation of the sacroiliac(More)
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