Abstracts Posters SICOT-SOF meeting Gothenburg 2010 _2_

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$Percutaneous Fixation for Pipkin type II Femoral head fracture ... - sicot$

$Tibial plateau fracture primarily treated with knee arthroplasty - sicot$

Poster Topic: Trauma - Hip Abstract number: 23773 PREDICTIVE CHANGE TO SALVAGE SURGERY OF THE DHS DEVICE Mohd Mashfiqul Arafin SIDDIQUI, Joyce KOH, Merng Koon WONG, Tet Sen HOWE Singapore General Hospital, Singapore (SINGAPORE) INTRODUCTIONThe dynamic hip screw (DHS) is a standard device for fixation of intertrochanteric hip fractures. Cut out is one of the commonest mode of mechanical failure for this device. In the literature, contributory factors to cut out are osteoporosis, fracture type, fracture reduction and implant position.The aim of this study is to determine if there are pre-operative factors which determine likely failure of the DHS device and thus salvage surgery.METHODOLOGYAll patients who had a DHS fixation for intertrochanteric fracture from July 2003-May 2005 were retrospectively identified. Patients lost to follow-up or without appropriate radiographs were excluded. X-rays were reviewed pre-operatively and post-operatively. Osteoporosis, fracture pattern and quality of reduction were co-related with risk of cut out.RESULTSThere were 155 patients. Seven patients cut out. Median time to cut out was 26(SD12.6) weeks and median time to union was 2(SD1.1) months. There was an increased risk of the DHS cut out if the medial calcar was not intact(p=0.007) and tendency to cut out with fracture comminution(p=0.08).CONCLUSIONOur study highlights the importance of an intact medial calcar and sufficient bony support in the intertrochanteric region for the success of the implant. This is likely due to the fact that the DHS is a sliding device that depends on compression around the intertrochanteric region for fracture union. Patients with deficient medial calcar may benefit from bone grafting, new implant design or even a hemiarthroplasty at initial surgery. 556
Poster Topic: Trauma - Hip Abstract number: 23848 A BIOMECHANICAL COMPARISON OF STATIC VERSUS DYNAMIC LAG SCREW MODES FOR CEPHALOMEDULLARY NAILS James WADDELL, Paul KUZYK, Radovan ZADERO, Suraj SHAH, Michael OLSEN, Gordon HIGGINS, Emil SCHEMITSCH University of Toronto, Toronto (CANADA) The purpose of this study was to compare the biomechanical stiffness of static and dynamic modes for a cephalomedullary nail used to fix an unstable peritrochanteric fracture.An unstable four-part fracture was created in 30 synthetic femurs and each was fixed using a Long Gamma 3 Nail. Mechanical tests were conducted for axial, lateral, and torsional stiffness with the lag screws in static and dynamic modes. A paired students t test was used to compare the 2 lag screw modes.The axial stiffness of the cephalomedullary nail was significantly greater (p
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Seventh SICOT/SIROT Annual Internat
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Poster Topic: Arthroplasty - Elbow
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Poster Topic: Arthroplasty - Hand/W
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Poster Topic: Arthroplasty - Hip Ab
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Poster Topic: Arthroplasty - Knee A
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Poster Topic: Arthroplasty - Should
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Poster Topic: Arthroplasty - Should
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Poster Topic: Arthroplasty - System
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Poster Topic: Arthroplasty - System
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Poster Topic: Biomaterials Abstract
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Poster Topic: Cartilage Repair Abst
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Poster Topic: Evidence Based Orthop
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Poster Topic: General Orthopaedics
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Poster Topic: Infections Abstract n
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Poster Topic: Minimally Invasive Su
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Poster Topic: Navigation Abstract n
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Poster Topic: Osteoporosis Abstract
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Poster Topic: Paediatrics Abstract
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Poster Topic: Spine Abstract number
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Poster Topic: Sports Medicine - Ank
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Poster Topic: Sports Medicine - Ank
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Poster Topic: Sports Medicine - Elb
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Poster Topic: Sports Medicine - Han
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Poster Topic: Sports Medicine - Hip
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Poster Topic: Sports Medicine - Hip
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Poster Topic: Sports Medicine - Kne
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Poster Topic: Sports Medicine - Sho
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Poster Topic: Sports Medicine - Sho
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Poster Topic: Sports Medicine - Spi
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Poster Topic: Sports Medicine - Sys
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Poster Topic: Trauma - Ankle / Foot
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Poster Topic: Trauma - Ankle / Foot
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Page 553 and 554: Poster Topic: Trauma - Hip Abstract
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Page 593 and 594: Poster Topic: Trauma - Systemic Abs
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Poster Topic: Trauma - Tibia/Fibula
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Poster Topic: Tumours Abstract numb
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Abstracts Posters SICOT-SOF meeting Gothenburg 2010 _2_

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