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Biomedical subjects

M Forgon

Publications and source records attributed to M Forgon.

At least 19 recordsLinked to original sources
PubMed1990

[Girlestone's arthroplasty with resection of the femur head in the management of infection as a complication of hip prosthesis].

From the endoprosthesis material with early and late complication and treated with Girdlestone's method (resection arthroplasty of the femoral head) n 36 cases, 27 were available for follow-up after 1-11 years (in average 5 years). The assessment was made with an own point-system. 3 categories were differentiated on the base of these points. From the 27 patients 7 were satisfied, 14 "reconciled", 6 dissatisfied. It could be stated that Girdlestone's operation does not mean a catastrophe, as the major part of the patients has no pain and sinus, is able to walk and to make the domestic work and is not reduced to the care of others.

Arthroplasty↗
PubMed1988

[Results of surgical treatment of Dupuytren's contracture].

Ninety-five Patients with Dupuytren's contracture, treated by partial (subtotal) aponeurectomy, have been evaluated retrospectively from various points of view. The immediate postoperative status and the results one to five years later were compared. The authors establish that Dupuytren's contracture can be treated with very favourable effect, but the good results deteriorate later due to recurrence. This deterioration remains temporarily unchanged in the second and third years, but the worsening continues till the end of the fifth year. The functional state shortly after the operation was 41% better than the preoperative one, becoming 18% worse after the fifth year, but even then was 22.6% better than the preoperative condition.

Adult↗
PubMed1987

Morphological investigations of a porous aluminum oxide ceramic and the consequences for clinical application.

The ingrowth of bone and the tissue compatibility of a Hungarian aluminum-oxide ceramic have been investigated in animal experiments by microscopic section, by electron microscopy, and with energy-dispersion X-ray microanalysis. Surrounding bone grew into the 100- to 500-micron pores of the porous ceramic without any undesirable reaction, as well as into bored holes 500 micron in diameter. It is technically possible to make only the 1- to 2-mm deep superficial layer of such a material macroporous, so that it can be applied as an acetabular component of hip prostheses; if the surrounding bone grows into the macropores of this thin layer (as was shown in our experiment) it can perfect the connection between the living bone and the non-living ceramic material without essentially changing the much required, positive qualities of a solid acetabular component. The authors intend to apply this material in this way.

Acetabulum↗
PubMed1985

Bone growth accelerated by stimulation of the epiphyseal plate with electric current.

The effect of stimulation with continuous small amounts (20 microA) of electric current on the distal epiphyseal plate of rabbit femurs was examined. In contrast to control animals 6 weeks after the operation 18 of the 20 experimental animals showed an increased lengthening or broadening of the femur on the operated side. In 14 cases the increased growth resulted in varus or valgus deformities.

Animals↗
PubMed1983

[Repositioning and retention problems of calcaneus fractures].

A new procedure is elaborated by the authors: the treatment of impression-fractures of the calcaneus. Exact repositioning is considered to be important. For this purpose, an apparatus for repositioning was constructed. The authors discuss the manoeuvres for exact repositioning. The repositioned fracture can be fixed well by two divergent ASIF cancellous bone screws to be inserted percutaneously after predrilling from the tuber calcanei. The stability of the osteosynthesis makes external fixation with plaster superfluous. This statement is based on the good results of 63 calcaneus fractures treated in this manner.

Bone Screws↗
PubMed1983

[Our corrective osteotomy for radius fractures healed in defective position at the typical spot].

Authors give literary survey about correction possibilities of Colles fractures healed in failed position. In their paper the procedure of their clinic reviewed: with oscillating saw a wedge is removed from the radius on place of the failed fracture and so the normal angles of the radiocarpal joint can be restored. But at the same time the ulna must also be shortened with removal of a segment from the distal part. Both bones will be fixed laterally with ASIF semi-tubular plates. Results were evaluated with the McBride point system. From 23 cases 22 were available for follow up examination. 8 cases were "excellent", 13 "good", 1 "fair". There was no "bad" among the cases. Our favourable results support advantages of this method.

Fracture Fixation↗
PubMed1982

[Late results of severe flexor tendon injuries of the hand after producing tendon-sheath from a vein (author's transl)].

In 1975 one of the authors published a new procedure of reconstruction of severe flexor tendon injuries in the Verdan 2 Zone: a flexor-tendon plasty combined with the reconstruction of tendon sheaths from a vein. In a follow-up study of 54 cases the authors evaluated results from 1-6 years perspectively by means of two methods. Two thirds of their cases are classified as "excellent" or "good". The evaluation by means of two methods provides interesting comparisons. The authors support the evaluating method of Buck-Gramcko, Dietrich and Gögge, and they particularly stress the necessity of registering preoperative states in evaluating results of the flexor tendon injuries.

Adult↗
PubMed1980

[Reconstruction of tendon sheaths from veins in the "no-man's-land" of the hand].

A special procedure is reported for reconstruction of damaged flexor tendons in "no-mans-land" after severe crush injuries and extensive scarring. In the first stage, the scarred flexor tendons will be excised and replaced by an autogenous vein graft. A silicone rod is placed within the vein graft. In the second stage, 3 to 4 weeks later, the silicone rod is replaced with a free tendon graft. The endothelial lining of the vein tunnel provides a good gliding surface for the vein grafts. The minimal scarring permits better function.

Adult↗
PubMed1979

[Angiography for the changes of arterial network in experimental tubular pedicle flaps (author's transl)].

Authors performed on rabbits experimental tubular pedicles and pedicle transfers investigating by means of fill up angiography the changes occuring in the arterial network. They conclude that in the tubular pedicles the adapting of blood supply to the changed circumstances result in transformation of arterial network. There are similar alterations after transposition of the tubular pedicles. Details of changes in vascularisation are given.

Angiography↗
PubMed1979

[Infected pseudoarthroses of long tubular bones. (Principles of treatment and results in the material of the University Hospital) (author's transl)].

Based on clinical experiences author takes part for principles in the treatment of infected nonunions of long tubular bones. Main characteristics of his treatment are: Baside an approach saving the blood supply of bone, stable osteosynthesis, sequestrotomy and removal of necrotic tissues (focus elimination) filling in with autologous spongy bone chips the residual bone cavities, in acute stadium the application of PMMA balls as preparatory measure for a following cancellous bone, transplantation. Author comments at the same time on drainage, rinsing and sucking. Selective use of antibiotics may complete the therapy. Data of treatment in 42 cases of infected nonunions are given.

Bone Transplantation↗