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Biomedical subjects

U Dietz

Publications and source records attributed to U Dietz.

38 records · Page 3Linked to original sources
PubMedDate not supplied

[Three-dimensional computer reconstruction of the pelvic and hip area in the preoperative planning of orthopedic interventions and surgical simulation].

RESEARCH QUESTION: Osteotomies are elective operations which require exact pre-operative planing. Computer assisted three-dimensional planning of orthopedic procedures requires a three-dimensional reconstruction of the region of interest. To be applicable, such a three-dimensional reconstruction must be an accurate mathematical description of the region of interest, and not only a 3-D-image. The purpose of this study was to create such an accurate 3-D reconstruction. METHODS: We describe a method to create an exact reconstruction from CT-data, from the data acquisition, contour determination by an algorithm, triangulation of the resulting data and reconstruction of the region of interest. CONCLUSION: The described method is a useful tool to obtain exact individual three-dimensional reconstructions of any skeletal region of interest. This makes pre-operative planning and simulation of the results of orthopedic procedures at the computer possible.

Computer Simulation↗
PubMedDate not supplied

[Pregnancy and labor in chronic anterior horn lesion].

This is the case of a 35-year old woman who suffers from a chronic form of spinal muscular atrophy and who has successfully completed four pregnancies between 1982 and 1987. After a short discussion of etiology, pathology, heredity and the differential diagnosis we describe the obstetric problems of our patient. The pregnancies were mainly aggravated by recurrent cystitis. In all the four deliveries the patient had to undergo cesarean section followed by severe lung problems. After the third pregnancy the patient had a nephrectomy cause of a pyonephrosis. We could not see an aggravation of the disease at it is described in some cases of Charcot-Marie-Tooth disease or polyneuritis. Three of the four children showed a striking muscular hypotonia post partum that disappeared soon after the neonatal period.

Adult↗