Acta Chir Orthop Traumatol Cech. 1995; 62(6)

[X-ray Classification of Morbus Legg-Calvé-Perthes and its Evaluation.].

V Dzupa

Acta Chir Orthop Traumatol Cech. 1995; 62(6):326-330

The author presents an account of the most frequently used X-ray classifications of morbus Legg-Calvé-Perthes, incl. their description and discusses the advantages and disadvantages of the various methods. He emphasizes in particular Waldenstrom's, Herring's and Stulberg's classification. Key words: morbus Legg-Calvé-Perthes, X-ray classification.

[Reconstruction Osteotomy by Morscher's Method in Coxa Vara.].

M Weissinger, C Helmreich, A Keppel

Acta Chir Orthop Traumatol Cech. 1995; 62(6):331-335

Between January 1, 1989 and December 31, 1994 the authors performed in eight patients prolongation osteotomy of the neck of the femur with transposition of the greater trochanter. The patients comprised six women and two men, in four instances the left and four instances the right side was operated. The indications comprised in four patients congenital dysplasia of the hip joint with a shorter externity, is three patients Perthes disease, incl. in one patient postluxation m. Perthes, in one patient a state following fracture of the cervix. By Morscher's osteotomy prolongation of the extremity can be achieved and improved biomechanics of the hip joint....

[The effect of collagenous gel on endoprosthesis anchoring.].

M Adam, H Pohunková, O Cech, J Váchal

Acta Chir Orthop Traumatol Cech. 1995; 62(6):336-342

Collagen supplemented with tripeptide (gly-his-lys) was tested for implantation of cervicocapital endoprostheses of the hip in adult minipigs. In anaesthesia bone marrow cavity was filled up with the collagenous gel and then one of the two endoprosthesis types, produced by BMT Poldi Kladno was implanted. The experimental animals were killed eight, nine and ten weeks after operation. The femors were removed and roentgenologically and histologically examined. When bone marrow cavity was filled up with collagenous gel, anchoring of endoprosthesis with newly formed tissue was accelerated in comparison with those without gel. In the presence of fatty bone...

[Remarks on biomechanics of external fixation.].

J Stehlík, R Novotný, Z Klézl, O Cech

Acta Chir Orthop Traumatol Cech. 1995; 62(6):343-353

In our experimental study we report results of a measurement of the stiffness of different types of external fixators. In model of external fixation of the femur the mechanical properties of Hoffmann, Wagner, Ilizarov and Poldi 7 aparates were evaluated in model of external fixation of the tibia the properties of the different configurations of the unilateral frame and of the combined unilateral frame and bilateral frame were evaluated. Our results have shown the importance: - the stiffness of an applied frame, - the proper interconection of the used configura tion of the apparatus (frame), - the number and placement of an individual im plants screws,...

Relative abductor strength after varus and valgus osteotomy of the proximal femur.

V Antolic, F Srakar, A Iglic, A Macek-Lebar, S Herman, V Kralj-Iglic

Acta Chir Orthop Traumatol Cech. 1995; 62(6):354-356

Relative abductor strength (RAS) is defined as the difference between the available (maximum) abductor force and the required abductor force i.e. the force needed to maintain the mechanical equilibrium of the pelvis. In this work the dependence of RAS on the centrum-collum-diaphyseal angle and on the position of the greater trochanter was studied using a 3-D mathematical model of the human hip in the monopodal stance. Simulation of the varus and valgus osteotomy was done for the normal, 3 cm distal and 5 cm proximal position of the greater trochanter before the operation. It was shown that after valgi-sation a significant reduction in RAS is to be...

[Development of the ceramic sandwich cup used for the hip joint prosthesis.].

S Konvicková, O Cech

Acta Chir Orthop Traumatol Cech. 1995; 62(6):357-361

The abrasion of the polyethylene seems to be the most important factor participating on the endoprosthesis loosening. From this reason, the ceramics (AI2O3) was introduced for the both parts of the prosthesis, i. e. the head and the cup. It appears that the friction resistance is an important factor for the comparison of the hitherto applied endoprosthesis designs with the new developed type. The frictional resistance in the hip joint total prosthesis was measured by means of a testing device which allowed a swinging motion of the ceramic ball in the tested cup in the range of +/-25 degrees . This measurement was carried out at the loading levels being...

[Hyaluronic Acid (hyalgan(r)) in the treatment of gonarthritis.].

K Pavelka, V Vlasáková, J Vítová, H Stehlíková, J Slanský

Acta Chir Orthop Traumatol Cech. 1995; 62(6):362-366

The authors made an open multicentre clinical study with the administration of hyaluronic acid (Hyalgan(R) - Fidia) in patients with gonarthritis. The study comprised 31 patients with gonarthritis grade II-III according to Kellgren, 30 of whom completed the study. Hyalgan was administered to the patients - vials á 2 ml in five injections in weekly intervals by the intraarticular route. The patients were followed up for another three months after completed treatment. A significant decline of pain on the visual analogue scale (VAS) was recorded already two weeks after onset of treatment (p = 0.001) and this decline persisted for another 13 weeks after...

[Arthroscopic subacromial decompression.].

B Delej

Acta Chir Orthop Traumatol Cech. 1995; 62(6):367-370

The author describes the technique of subacromial arthroscopic decompression. By comparison with the world literature he proposes the optimal method of this operation. He analyzes the indications, examination methods, postoperative care, rehabilitation and rating activities after this operation. In the results he presents the case-history of an operated patient with subacromial decompression and removal of a calcified subacromial bursa. He compares his results with data from the literature. Key words: arthroscopic subacromial decompression, impingement syndrome, subacromial bursa, subacromial space, arthroscopic acromioplasty.

[Dorsal stabilization in multiple metastases of the thoratic spine in prostate carcinoma.].

M Krbec, O Cech

Acta Chir Orthop Traumatol Cech. 1995; 62(6):371-373

The authors used successfully since 1991 for the treatment of injuries of thoratic spine (Th-1) dorsal instrumentation by means of an internal AO fixation device (Dick's fixation device). In some injuries e. g. fractures at several levels, pathological fractures and in particular in metastatic processes or spondylolistheses its application is limited. Since 1995 in the authors' department in these instances a new USS system is used. The latter makes it possible to fix several levels above each other, it is variable and flexible, has a lawer profile and volume. It ensures sufficient stability. Key words: bone metastases, spine, stabilization.

[Possibilities to Visualize the Non-ossified Patella by Ultrasound.].

J Poul

Acta Chir Orthop Traumatol Cech. 1995; 62(6):374-375

The patella ossifies between the second and third year of life. Inborn dislocation of the patella must be, however, diagnosed as soon as possible. The basis is naturally clinical diagnosis, but the possibillity of imaging of the patellofemoral joint is welcome, as it provides graphic documentation. Apart from the financially and otherwise pretentious NMR examination, documentation can be obtained by ultrasound. The author demonstrates two cases of dislocation of the patella in Down's disease. Key words: congenital dislocation of the patella, ultrasound.