Biomedical subjects

Z Csernátony

Publications and source records attributed to Z Csernátony.

11 recordsLinked to original sources

PubMed2004

The most severe forms of Perthes' disease associated with the homozygous Factor V Leiden mutation.

It has recently been postulated that thrombophilia may have a role in the aetiology of Perthes' disease. The published reports, however, remain conflicting. In this study a retrospective analysis of the coagulation parameters was made in 47 patients with Perthes' disease and the results compared with the clinical data. Five patients with Factor V Leiden mutation were found (10.6%) and surprisingly four of them had a homozygous pattern. These four patients showed the most severe form of the disease, Catterall group IV, with flattening of the entire epiphysis, involvement of the metaphysis, shortening and broadening of the femoral neck, trochanteric overgrowth and developed mushroom-shaped aspherical laterally displaced femoral heads in dysplastic acetabula. We would like to suggest that the homozygous form of Factor V Leiden mutation has some role in the clinical course of Perthes' disease and particularly its most severe form.

Activated Protein C Resistance↗

PubMed2003

Multilevel callus distraction: a novel idea to shorten the lengthening time.

Lower extremity inequality is a common problem in everyday orthopaedic practice. The leg discrepancy can lead to variety of other problems, i.e., spinal problems. Surgical intervention is very demanding and requires patient compliance. Wagner's and Ilizarov's elongation technique are most commonly used worldwide, but it gives satisfactory results only in a long period of time and as we know there could be several inconvenient outcomes. Our idea aims at shortening this time period, and avoiding some of the inconvenient outcomes. Unfortunately we do not have the opportunity to go further in our investigations, but we hope that someone interested in this field will have an idea which would make continuation possible.

Bone Lengthening↗

PubMed2002

Contradictions of derotation in scoliosis surgery using the CD principle.

Current literature has increasingly emphasized the problem of derotation in scoliotic deformities. The Cotrel-Dubousset (CD) principle as a means of correcting rotation has been questioned by various authors. This paper aims to draw attention, using algebraic methods, to the importance of the remaining rotational deformities, and to suggest the introduction of the notion 'rotational balance'.

Humans↗

PubMed2000

The 'rotational preconstraint'.

This model provides a novel view of the etiology of some scolioses and can answer some of the biomechanical questions regarding pathogenesis of dorsal curves. According to our findings, paravertebral muscular imbalance is likely to favour such a pathological condition which, with the interference of the postural reflexes and the body weight-related vertical loading, might lead to the formation of a true scoliotic curve. Review of earlier research studies in the light of our findings reveals controversy in some authors' reported results and their own interpretations and seems to generally support our theory.

Humans↗

PubMed1998

Functional improvement after knee arthroplasty without resurfacing of patella.

There has been no universal agreement so far regarding the necessity of patellar resurfacing in total knee arthroplasty. As resurfacing has been reported to be associated with high incidence of complications, this practice has been avoided in our Department. A report is given on the analysis of the functional outcome of 60 knee arthroplasties without patellar resurfacing in 53 patients (7 bilateral) followed up for twelve to thirty months, with special regard to the functions closely related to patelloformal articulation. The underlying diagnosis was osteoarthritis in 78.3%, rheumatoid arthritis in 13.3%, and posttraumatic arthritis in 8.3% of the patients. Graded according to the modified knee-rating system of the Hospital for Special Surgery, excellent or good results were obtained in the case of 55 knees (91.6%) and the mean score improved from 53.6 points preoperatively to 82.6 points following arthroplasty. Subjective and objective functional assessment of stair climbing and transfer activities have shown no functional deficit attributed to the patellofemoral joint of the replaced knee.

Adult↗

PubMed1997

Experimental studies for the surgical correction and fixation of dorsal spine deformities.

One of the specific features of the scoliosis operations with a posterior approach is that both the correction of the deformity and then the maintaining of the corrected situation are carried out with the help of the implants. With the currently applied systems based on the CD principle it is still difficult to control the rotational component of the scoliotic curve. To complement the systems based on the CD principle, we have developed an implant family whose application makes the correction of the dorsal deformity generally simplier and derotation more effective. Our method is based on the application of such hooks which, linked to the longitudinal rods and hooked on both transverse processes of the instrumented vertebrae, transmit the concerted forces exerting their influence in the direction of the correction. Depending on their symmetrical relations, the hooks are capable of tilting in the frontal plane and derotating in the horizontal plane simultaneously, in the direction of our choice. The stability and applicability of the hooks were tested in implants into cadavers, and then the intimate relations of the implants were examined by means of radiological tests and dissection on instrumented specimens. On the basis of our results, the implants can already be used in clinical practice.

Cadaver↗

PubMed1997

Acute arthroscopy.

The role and significance of acute arthroscopy have been evaluated in the treatment of knee joint injuries on the basis of findings during 59 arthroscopic operations which were conducted within two weeks after the accident. The injuries developed isolated in more than half of the cases (65%) whereas they appeared in a combination of two or more in 26% and in 9%, respectively. Injuries requiring operation were found in 91.5%, most of which were ruptures of the ACL (33 cases) and menisci (23 cases). In the case of ACL rupture, in the acute phase on sportsmen and physical workers primary arthroscopically assisted transligamental replacement was performed with patellar graft while in the case of proximal rupture of the ACL reinsertion and augmentation were carried out with semitendinosus tendon. The ruptures of dislocated eminentia were refixed in each case. In the case of the rupture of meniscus the refixation of the meniscus of resection of the ruptured part was attempted. By means of acute arthroscopy the lesion of the intraarticular structures or that of their combinations can be exactly diagnosed. Depending on the findings of arthroscopy the injuries can be treated immediately or operated on at a later time, thus preventing the joint from further deterioration.

Adolescent↗

PubMed1997

Therapeutic value of continuous passive motion after anterior cruciate replacement.

The aim of this study is the evaluation of the therapeutic value of continuous passive motion after ACL replacement. After 41 ACL reconstruction in 13 cases only active motion, in 28 cases active motion and CPM were used postoperatively. Stability, the range of motion and complications were evaluated at the time of discharge, 3 and 6 months after the operation. The flexion-extension in the CPM group was significantly greater at the time of discharge, but this difference was practically eliminated in 6 months after the operation. There were not any other significant difference between the two groups. The CPM gives only a little advantage in the rehabilitation after the ACL replacement.

Adult↗

PubMed1993

[Experience with the implantation of porous coated hip endoprostheses and primary stability of implantation].

The use of porous coated cementless prosthesis, shows a worldwide spread in consequence of the advantages given by the "live" connection between the implant and the bone. Based on 40 implantations of prostheses of this type (Duraloc 1200 acetabulum, AML shaft) authors report on the technique of the implantation and the primary stability reached. In consequence of the formation, the variety of size and the properly usable instruments for implantation, the prostheses could be used for every kind of deformed, dysplastic hips and good primary stability was reached in every case operated.

Adult↗

PubMed1991

[Synovial chondromatosis of the knee joint].

Authors removed more than hundred free bodies from the knee joint of a young female patient. In connection with their case the criteria of the synovial chondromatosis, the theories concerning the pathogenesis and the therapy to be chosen are described, based on literary data.

Adolescent↗

PubMed1989

[Results in Miacalcic therapy in the analgesic treatment of patients with bone metastases].

Authors have administered between 1984--87 in 30 patients with bone metastasis weekly 3 X 100 iu Miacalcic injections to relieve pain. The literature dealing with the pain relieving effect of calcitonin is summarized and their own results are assessed from more viewpoints. The use of Miacalcic injection is suggested as it was found a modern and very effective palliative medicine for pain relieving.

Analgesics↗