Biomedical subjects
Publications and source records attributed to H W Springorum.
We report 3 cases of metal-backed patellar component failure of the Microloc total condylar knee, which was implanted in 51 cases. The main reason for failure was the design of the patellar and femoral components in combination with flexion of more than 100 degrees.
After Achillean tendon rupture defects of the gliding tissue can often be observed. To prevent fixation of the tendon by scar tissue formations we recommend the use of collagen films in the defective area to isolate the tendon surface.
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This study demonstrates, that regeneration of bone in cortical layer defect is about as intensive after application of collagen grafts as after transplantation of autologous of homologous cancellous bone.
Intestinal infarction in the absence of organic vascular occlusion received increasing attention in recent years. The clinical picture is discussed based on results in 9 cases, an attempt to suggest a possible pathophysiological mechanism is made. Prophylactic digitalisation especially in the elderly patient in the absence of severe heart failure and in cases with already low mesenteric perfusion may lead to a further vasoconstriction and to hemorrhagic enteropathy. Therapeutic possibilities are discussed.
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Report on 35 cases of mallet finger treated conservatively: a circular plaster cast was modeled in hyperextension of the distal interphalangeal joint. The immobilisation of the whole finger form the tip to the proximal phalanx was maintained for six weeks. The reported results were good or excellent with the exception of two cases.
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Based on one case the Verner-Morrison-syndrome is demonstrated and discussed in detail. Clinically profuse watery diarrhea and severe hypokalemia are predominant. The pathogenesis is not quite clear. Curative therapy consists in radical surgical removal of the endocrinologically active tumores or diffuse hyperplasia.
In rat experiments a new silver chelate salt preparation is tested on scald wounds after standardized infection by Pseudomonas aeruginosa. 30% of the animals survive scalding and infection after treatment with the new cream. This percentage does not reach the gentamycin treated reference group (60%). After combining gentamycin and silver chelate salt in local therapy 75% of the animals survive. Combination of silver chelate salt and gentamycin seems to be a very successful local therapy of scald wounds.
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The following indications are well accepted for subtotal femur replacement: 1. Malignoma of the hip region. 2. Pertrochanteric fractures. 3. Loosening of hip prosthesis in case of large bony defects. The common devices are implanted by use of bone cement,--we report on three cases, treated by cementless subtotal femoral replacements with bony ingrowth surface. The surface design imitates the structure of spongious bone. The mean observation time of our three patients is more than two years, no complaints are to be observed. By intensive permeation of bone in the surface structure we achieve a more advantageous biomechanical situation.
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