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Biomedical subjects

M Postel

Publications and source records attributed to M Postel.

71 records · Page 4Linked to original sources
PubMedDate not supplied

[Reconstruction prosthesis after upper epiphyseal and diaphyseal resection of the femur for tumor. Results of 16 cases and a biomechanical study].

The authors have treated 16 cases of tumours of the upper end of the femur by resection over at least 12 centimetres and insertion of a massive prosthesis. The tumour was secondary in 9 cases and primary in 7. This treatment was used for metastases where conservative surgery was impossible or had failed. In primary tumours, when the excision was very extensive, the main problem was of stability of the prosthesis and its long-term future. A new type of total massive prosthesis, designed by the authors after biomechanical studies, is described.

Biomechanical Phenomena↗
PubMedDate not supplied

[Intertrochanteric osteotomies. A critical study of the clinical radiologic evaluation].

The authors describe the technique that they have used in approximately 500 intertrochanteric osteotomies of the femur. The technique was satisfactory in the production of bony union but in ten per cent of cases there were errors of correction of 5 degrees or more. An analysis of errors related to the radiological technique used showed that a number of conditions (flexion, abduction) modify the angles of inclination and anteversion. A number of instances of degenerative arthritis had been incorrectly attributed to increased coxa valga. An analysis is made of the difficulties encountered when correction is required in two planes, especially when there is fixed flexion or significant anteversion. Some suggestions are made concerning improvements in technique.

Femur↗
PubMedDate not supplied

[A new variety of chondrosarcoma : so-called "chondro-blastic" sarcomas or "clear cell" chondrosarcomas. Pathology and electron microscopy in 5 cases (author's transl)].

The authors report the pathological and clinical findings in five cases of chondrosarcoma resembling chondroblastic chondrosarcomas as described by Lichtenstein and Bernstein in 1959 and, above all, clear cell chondrosarcomas as described by Unni et al. (1976). These chondrosarcomas have a double peculiarity:--topographic, for their site is often epiphyseal :--anatomica, for they associate, in the usual chondrosarcomatous sectors, areas rich in clear cells, with a rich blood supply, and in some cases a diffuse reactional osteogenesis. Although the long term prognosis is similar to that of all chondrosarcomas, their course is sometimes very slow. One should thus distinguish carefully these tumours from chondroblastomas in spite of certain topographic and radiological similarities.

Adult↗