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S Trager

Publications and source records attributed to S Trager.

5 recordsLinked to original sources
PubMed1995

Quantitative culture technique and infection in complex wounds of the extremities closed with free flaps.

The purpose of this study was twofold: (1) to determine if there is a relationship between a critical quantity of bacteria and infection in complex extremity wounds, and (2) to compare the positive and negative predictive values, sensitivities, and specificities of the following laboratory and clinical tests of potential wound infections: quantitative cultures, swab cultures, mechanism of injury, severity of fracture, and wound position. Fifty patients were evaluated who had 50 free-tissue transfers. Twenty-eight patients had quantitative cultures prior to flap coverage. All 50 patients were evaluated for wound position, presence or absence of a fracture, and mechanism of injury; 16 patients had swab cultures. The best positive predictive value (89 percent) and negative predictive value (95 percent), along with sensitivity (89 percent) and specificity (95 percent), for predicting wound infection were those of quantitative cultures. This demonstrates that in the clinical setting of this study, the test with the highest utility and validity is quantitative cultures.

Bacteriological Techniques↗
PubMed1993

Color flow Doppler: imaging the upper extremity.

Dynamic values of key vessel diameter, blood velocity, and flow rate in the upper extremity were obtained in 20 healthy volunteers by means of color flow Doppler imaging with a 7.5 MHz transducer. Recordings were made of the brachial, radial, posterior radial recurrent, ulnar, and digital arteries. Radial and ulnar vessels were evaluated at both wrist and midcarpal levels. Diameter and velocity changes were followed throughout the cardiac cycle, and a true mean flow was computed. Mean diameters of the digital vessels ranged from 0.9 mm in the small finger to 1.3 mm in the thumb. Brachial flows ranged from 4.6 to 89.9 ml/min, radial flows from 0.9 to 15.3 ml/min, and ulnar flows from 0.6 to 79.9 ml/min. At the midcarpal level, flows ranged from 0.2 to 68.4 ml/min for the ulnar artery and from 0.8 to 42.9 ml/min for the radial artery. Variability between individuals was also demonstrated in artery dominance: eleven ulnar dominant, seven radial dominant, and two equal (within 25% of each other). The accuracy and ease of use of this technique in measurement of vessels are limited when vessels are less than 1.5 mm in diameter although the technique provides quantitative values to 0.5 mm.

Adult↗
PubMed1991

Management of supracondylar fractures of the femur with the GSH intramedullary nail: preliminary report.

The GSH supracondylar nail is a closed section rigid intramedullary device that combines the biomechanical advantages of intramedullary fixation with the stability of rigid internal fixation for the management of supracondylar fractures of the femur. The use of this implant is indicated in the management of distal comminuted nonarticular fractures and fractures with intraarticular extension. Intramedullary fixation provides improved fracture stabilization in both elderly patients with osteoporotic metaphyseal bone and in younger patients with extensively comminuted fractures. The experience with the GSH supracondylar nail has shown that it provides better results than supracondylar plating for the stabilization of acute fractures or revision of failed internal fixation.

Adult↗
PubMed1989

Ankle arthroscopy: a method of distraction.

Although ankle arthroscopy has been limited by the restricted available joint space, the use of distraction in addition to joint distention has permitted improved surgical and diagnostic examination of the ankle. In contrast to previously described methods of distraction, a simple, effective, and noninvasive method of distracting the ankle joint is proposed. This method requires no special equipment: a standard fracture table, adhesive tape, and sterile self-adherent bandages are used to provide successful joint distraction as demonstrated radiographically.

Adult↗