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Peds hip dislocation

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By David Bennett Pediatric Orthopaedic Surgeon in the United States
Reinhold Ganz, Theddy Slongo, Klaus A Siebenrock, Luigino Turchetto, Michael Leunig
BACKGROUND: Codivilla in 1901, Hey Groves in 1926, and Colonna in 1932 described similar capsular arthroplasties--wrapping the capsule around the femoral head and reducing into the true acetabulum--to treat completely dislocated hips in children with dysplastic hips. However, these procedures were associated with relatively high rates of necrosis, joint stiffness, and subsequent revision procedures, and with the introduction of THA, the procedure vanished despite some hips with high functional scores over periods of up to 20 years...
November 2012: Clinical Orthopaedics and related Research
Marco Scandurra, Fabrizio Iacopetti, Paolo Colona
Gases perturbed by thermal gradients exert forces on surfaces exposed to the molecular bombardment. We calculate the force on thin plates with temperature differences between the opposite faces in dense gases. Using the Chapman-Enskog method we obtain an analytical formula that accounts for normal and shear stresses on the plate edge. We predict a force per unit length of the plate perimeter up to 6.6x10(-8) N/mm per degree Kelvin of temperature difference in air. The present result is compared with experimental data from the literature finding an excellent agreement in those cases where experimental conditions and procedures permit comparison...
February 2007: Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
Patrick B Wright, John Ruder, Mark A Birnbaum, Jonathan H Phillips, Jose A Herrera-Soto, Dennis R Knapp
BACKGROUND: The painful dislocated hip in the setting of cerebral palsy is a challenging problem. Many surgical procedures have been reported to treat this condition with varying success rates. The purpose of this study is to retrospectively evaluate and compare the outcomes of 3 different surgical procedures performed at our institution for pain relief in patients with spastic quadriplegic cerebral palsy and painful dislocated hips. METHODS: A retrospective chart review of the surgical procedures performed by 5 surgeons for spastic, painful dislocated hips from 1997 to 2010 was performed...
July 2013: Journal of Pediatric Orthopedics
Nguyen Ngoc Hung
The aim of this study was to evaluate the outcomes of reduction in the treatment of traumatic posterior hip dislocation in children. Data of 22 pediatric patients (22 hips) with traumatic hip dislocation from January 1995 to December 2007 were analyzed. The clinical evaluation focused on symptoms, physical findings, and range of motion. Radiographs identified the type of hip dislocation. The hip dislocation classification was based on Thompson and Epstein. The reduction procedure was performed according to three variants: variant 1, closed reduction; variant 2, release of the adductor longus, lengthening of the psoas tendon, and insertion of a Kirschner wire through the femoral head into the acetabulum; and variant 3, removal of the soft-tissue interposition of the hip...
November 2012: Journal of Pediatric Orthopedics. Part B
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