Shan L Cheng

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PURPOSE To assess the effect of the injection rate of contrast medium on pancreatic and hepatic enhancement at abdominal helical computed tomography (CT). MATERIALS AND METHODS Sixty-four contrast medium-enhanced abdominal helical CT scans (64 adult patients) were obtained with 150 mL of contrast medium. The injection rate was 2.5 mL/sec for the first 32(More)
Total shoulder arthroplasty is indicated in the treatment of locked posterior fracture-dislocations of the shoulder where there is extensive damage to the articular surfaces of the humerus and glenoid. This report reviews the surgical technique, postoperative rehabilitation program, and functional results of seven shoulders in five patients who had locked(More)
Upper extremity injuries are commonly seen in the sport of in-line skating. The use of protective equipment, including wrist splints, has been advocated as a means to decrease both the incidence and severity of upper extremity injuries in this sport. We report on four cases of open forearm fractures in the in-line skaters that occurred adjacent to the(More)
An in vitro comparison of six methods of cerclage wire fixation was performed using 1-mm-diameter stainless steel wire. A testing apparatus was designed to simulate the tensile forces on a cerclage wire around a femoral shaft fracture. The hairpin cerclage knot that we describe generated significantly higher initial compressive force (p < 0.001) and had(More)
The effectiveness of screening and treatment of recurrent hepatocellular carcinoma (HCC) after liver transplantation (LT) remains undefined. Our aim was to evaluate the potential cost-effectiveness of screening for recurrent HCC after LT. We constructed a Markov model of the natural history after LT for HCC. We superimposed screening with computed(More)
We present a case of a widely displaced double-column acetabular fracture associated with lacerations of the ipsilateral common iliac artery and vein, resulting in a fatal hemorrhage. This case illustrates the importance of considering the possibility of a concomitant vascular injury in the assessment of a patient with an acetabular fracture and otherwise(More)
The authors reviewed their experience in the treatment of complex dislocations of the distal radioulnar joint. Six cases of complex dislocations were treated between 1990 and 1993. An algorithm for the treatment of these injuries has been developed. In most cases, complex dislocations are associated with an avulsion fracture of the ulnar styloid. The(More)
We performed an in vivo study in a canine model to compare the results of the use of a porous-coated collared femoral component with those of the use of a porous-coated collarless femoral component in total hip arthroplasties without cement. Our study focused on the comparative proximal strain pattern, bone ingrowth, and cortical porosity of the two types(More)
This article reports on the use of a new intramedullary nail designed specifically for fixation of knee fusions. The nail is a short locked stainless steel nail that is inserted through a single anterior knee incision and uses an outrigger targeting rod to guide the insertion of the locking screws. The successful use of this technique is illustrated in two(More)
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