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AIM To define the magnetic resonance (MR) imaging features of tophaceous gout of the spine. MATERIALS AND METHODS We present the MR imaging examinations of 4 patients with spinal tophaceous gout. Spin-echo T1-weighted and fast spin-echo T2-weighted images were obtained for all patients, and 2 patients had gadolinium-enhanced MR imaging studies.(More)
PURPOSE To analyze magnetic resonance (MR) patterns of fractures and pseudoarthrosis of the ankylosing spondylitic spine, and related changes in the dura and adjacent soft tissue. MATERIALS AND METHODS Sixteen patients with radiographically evident fractures or pseudoarthrosis of the spine were included. Each underwent MR studies. Ten patients among them(More)
A number of articles have investigated the outcomes of total knee arthroplasty (TKA) and causes of prosthetic failure in patients with haemophilic arthropathy. The aims of this retrospective study were to evaluate the clinical and functional outcomes of TKA and causes of prosthetic failure in patients with haemophilic arthropathy. A consecutive series of 35(More)
Structural scoliosis was produced by purely posterolateral mechanical tethering of the spine with ligation of the scapula to the opposite pelvic bone in rabbits during the growing period. It is a simple and easy method without direct trauma to the spine. When the tethering force occurred discontinuously or only in the coronal plane by drawing of the scapula(More)
Fifty-six dogs were used for the comparison of the allogenous and autogenous bone graft in anterior interbody and posterior spinal fusion. Excluding 7 cases with wound infections, the end results of the allograft and autograft in anterior interbody and posterior spinal fusion were nearly the same, provided that the rules of technique for the spinal fusion(More)
Poland’s Syndrome is a rare congenital condition. It is classically characterized by absence of unilateral chest wall muscles and sometimes ipsilateral symbrachydactyly (abnormally short and webbed fingers). The condition typically presents with unilateral absence of the sternal or breastbone portion of the pectoralis major muscle which may or may not be(More)
To evaluate a porous fiber titanium composite as a fixation method, total hip arthroplasty was performed in 13 large male mongrel dogs. In seven both acetabular and femoral composites were fixed with a porous titanium fiber composite, and in the other six the acetabulum was fixed with acrylic cement. The animals were killed one, three, and six months(More)
The bone-cement interface is an area of concern in the long-term fixation of endoprostheses. The effect of early weight-bearing on the interface has been discussed as an important parameter influencing the characteristics of the interface. In this study, a total hip arthroplasty was performed in two groups of six dogs each. One group was allowed immediate(More)
In femoral locked nailing, the distal locking screws are vulnerable to mechanical failure. Biomechanical studies have shown that the stress on these screws is substantially affected by the fit of the nail in the medullary canal. In this study, a "closed form" mathematical model based on elastic beam-column theory was developed to investigate how the(More)
In this study, magnetic resonance imaging (MRI) was used to analyze the signal intensity and vascularity of compression fractures of vertebrae in 74 patients. The possibility of nonunion was assessed according to the specific image findings and clinical presentation. All patients had chronic back pain for more than 3 months and compression fractures of the(More)