Biomedical subjects
Publications and source records attributed to B F Nielsen.
The authors present the case of a body-builder who sustained a spiral fracture of the humerus during arm wrestling (Indian wrestling). The cause of the fracture and the underlying mechanism are discussed and it is concluded that it appears appropriate to warn body-builders and weight-lifters against arm wrestling.
Forty-three women (mean age 67 years, range 34-84 years) with primary hyperparathyroidism were investigated in an effort to examine the regulation of the 1-alpha-hydroxylase. This enzyme catalyzes the 1-hydroxylation of 25-hydroxy-vitamin D [25(OH)vit D] to 1,25-dihydroxy-vitamin D [1,25(OH)2vit D]. Serum 25(OH)vit D, 1,25(OH)2vit D, PTH, ionized calcium, phosphate and the 24-hour clearance of creatinine were measured. Different linear regression models were calculated with 1,25(OH)2vit D as the dependent variable. 25(OH)vit D was found to be definitely important for the regulation. The role of PTH for the 1,25(OH)2vit D production was discussed. Both renal function and phosphate concentration were found to influence the 1-alpha-hydroxylation.
A total of 157 cases of well-documented supracondylar fractures of the femur in patients with knee replacement on the ipsilateral side are reviewed. Predisposing factors and methods of treatment are described and a possible therapeutic model is presented.
A case of bilateral spontaneous rupture of the extensor apparatus of the knee in a renal transplant recipient is reported. According to the literature the incidence of spontaneous ruptures is increasing, especially in uremic patients. The occurrence of such lesions should be borne in mind.
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The supracondylar fracture of the femur is a serious complication after total knee arthroplasty. We report our experience in the management of 16 patients with this complication and suggest that the main line of treatment should be conservative. Open reduction and plate fixation is precarious. In displaced fractures, however, the Rush pin technique was useful.
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A false aneurysm of the popliteal artery caused acute ischemic symptoms 23 years after plate osteosynthesis of a distal femoral fracture. The protruding tip of a screw was found in the center of the aneurysmal sac.
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Haemorrhagic compression of the femoral nerve is a rare complication of anticoagulation therapy. Two cases of femoral neuropathy secondary to such medication are presented and the literature is reviewed. The therapeutic approach to the problem is discussed.
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