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P Lubinus

Publications and source records attributed to P Lubinus.

4 recordsLinked to original sources
PubMed1996

[Preoperative planning in hip endoprosthetics: presenting a computer-assisted system using CAD software].

The implantation of hip prostheses is a complex operation if one takes in consideration the peculiar features of the different types of implants, the knowledge and skill of the surgeon and the differing characteristics of the patients. In particular, biomechanical parameters have to be respected if a good long-term outcome is to be achieved. Normally the planning of the operation is done with colored pencils and tracing paper. In this paper we present a computer-based system for the planning of arthroplasty with which it is possible to obtain precise two-dimensional simulation of the operation after entering the bone contours, as visualized radiographically, into CAD software.

Aged↗
PubMed1994

[Alkaptonuria and ochronotic arthropathy. Arthroscopic and intraoperative findings in implantation of a knee joint surface replacing prosthesis].

Alcaptonuria is a rare (incidence approx. 1:10(6)), autosomal-recessive transmitted metabolic disease. The basic defect is a lack of the enzyme homogentisic acid oxidase. During metabolism of phenylalanin and tyrosin to fumaric acid and acetoacetic acid this enzymatic defect causes an accumulation of the intermediate breakdown product homogentisic acid in bradytrophic tissues resulting in pigmentation and calcification of the intervertebral disks. We present a 57 year old female patient in whom we diagnosed alcaptonuria by the appearance of the typical symptom trias homogentisic acid excretion in the urine, ochronosis and arthritis. The anamnesis and results of a knee arthroscopy, radiographic and laboratory examinations as well as the intraoperative and histological findings during implantation of a knee joint surface replacing prosthesis (Gemini-System, Link Co., Hamburg, Germany) are reported.

Alkaptonuria↗