Biomedical subjects
J J Petry
Publications and source records attributed to J J Petry.
Contraction and growth of wounds covered by meshed and non-meshed split thickness skin grafts.
Full thickness wounds, one on either side of the backs of rabbits, were covered with meshed or non-meshed split thickness skin grafts. The wounds were measured over a 3 month period and the minimum and maximum sizes of the wounds determined as well as the rate of growth. Wounds covered with meshed grafts contracted to 55% of the original size while those covered with non-meshed grafts contracted to 81.5% (p = less than 0.0001). The meshed wounds grew to 114.6% of original area and non-meshed grew to 153.3% (p = 0.035) after 13 weeks.
The effect of the "patency test" on arterial endothelial surface.
The effect of the "milking patency test" on the arterial endothelium of the experimental rat is investigated. Each of 18 rats served as its own control. Bilateral femoral artery anastomoses were performed in identical fashion. The milking patency test was performed on one side (experimental) but not on the other (control). After removal of the approximator clamps, rats were perfusion-fixed in situ. Harvested experimental vessels stained with silver showed a twofold increase in endothelial cell loss compared to controls. Visual evidence of extensive endothelial loss was seen on silver-stained segments in the tested area. This was corroborated by scanning electron microscopy. The degree of damage seen in this study suggests that the milking patency test is too traumatic for use in clinical microsurgery.
The posterior calf fascial free flap.
Six posterior calf fascial free flaps were employed to reconstruct defects of the upper and lower extremities. One flap failed due to a constricting dressing. Two flaps sustained partial loss secondary to bleeding and hematoma formation. One flap dehisced at the distal suture line due to mobility of an underlying fracture. All surviving flaps eventually healed and resulted in stable, thin coverage. Donor-site morbidity has been minimal. Shortcomings of this flap model have been defined in the peculiarities of its thinness, diffuse vascular oozing, the extent of the vascular territory, and in postoperative monitoring. These problems are analyzed and recommendations for their resolution are presented. Fascia represents a unique tissue which offers an exciting new dimension in the reconstruction of certain defects--particularly those in which thinness is a desirable option. In the posterior calf model, the inclusion of fat represents an alternative modification that allows the surgeon to tailor the design to a variety of problems where fascia alone is too thin and a cutaneous flap is too thick. This concept may find its greatest application in wounds involving the hand or foot. We believe that this and other fascial flap prototypes may offer an ideal solution for reconstruction of major wounds of the extremities.
The implant problem: some personal thoughts.
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The female vanguard.
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