Evaluation of Safety and Efficacy of Traction, Closed Reduction, and Subsequent Hip Fixation in Hilgenreiner Brace in Patients with Severe Forms of Hip Developmental Dysplasia.

Background: Hilgenreiner brace (Hb) was developed to improve hip reduction rate and reduce the incidence of femoral head avascular necrosis (AVN). In children under the age of 18 months with unstable hip joints or a dislocated hip joint, the treatment method involves nonsurgical treatment in most cases.

Objectives: To evaluate the effectiveness and safety of traction, closed reduction, and hip fixation in Hb in patients with severe forms of hip developmental dysplasia (DDH) in follow-up.

[Long-Term Results of Computer-Navigated Total Knee Arthroplasties Performed by Low-Volume and Less Experienced Surgeon].

PURPOSE OF THE STUDY The study aims to evaluate the long-term results of computer-navigated total knee arthroplasties performed by less experienced surgeon performing a small number of procedures per year. MATERIAL AND METHODS In the prospective randomised study functional and radiological results, rate of revision and probability of clinical and radiological survival were compared in 30 computer-navigated (in 28 patients: 19 women, 9 men, with the mean age of 66.9 years) and 31 conventionally implanted (in 30 patients: 27 women, 3 men, with the mean age of 66.

Comparison of intravenous and intra-articular tranexamic acid in reducing blood loss in primary total knee replacement.

Objectives: This study aims to compare the efficacy and safety of intra-articular tranexamic acid (TA) versus intravenous (IV) TA in the reduction of perioperative blood loss and the degree of early postoperative complications associated with primary unilateral cemented total knee replacement.

Patients And Methods: This prospective randomized study included 90 patients (36 males, 54 females; mean age 68.7 years; range 47 to 82 years) with knee osteoarthritis undergoing a unilateral cemented total knee replacement.

[Bone Remodelling in the Proximal Femur after Uncemented Total Hip Arthroplasty in Patients with Osteoporosis].

Purpose Of The Study: The aim of the study was to investigate the involvement of osteoporosis during remodelling of the proximal femur after uncemented total hip arthroplasty (THA) and the effect of bisphospohonate treatment on these changes.

Material And Methods: Sixty evaluated patients with non-cemented THA were divided into three groups on the basis of pre-operative densitometric examinations. Group 1 (15 patients with osteoporosis) received a single dose of 5 mg zoledronic acid in infusion during the second post-operative week.

[The incidence of osteopenia and osteoporosis in patients with cementless total hip arthroplasty].

Purpose Of The Study: The aim of the study was to evaluate the incidence of osteopenia and osteoporosis in the patients elected to cementless total hip replacement.

Material And Methods: The group evaluated comprised 100 patients with primary or secondary forms of coxarthrosis who underwent cementless total hip arthroplasty (THA). The results of densitometric examination of the lumbar spine and proximal femur were analysed.

[Our experience with the metha short hip stem].

Purpose Of The Study: The aim of the study was to evaluate the clinical and radiographic results of total hip arthroplasty (THA) with the Metha short hip stem and their comparison with the outcomes of THA using a conventional cementless stem.

Material And Methods: A total of 30 Metha stems and 30 standard Biocontact stems implanted in the period from 2007 to 2012 were evaluated. The Metha patient group comprised 22 women and six men, with the mean age of 58.

[Subtalar dislocation of the foot].

Purpose Of The Study: Based on a retrospective analysis, the authors present their experience with treatment of subtalar dislocation of the foot.

Material And Methods: Between 1999 and 2011 six patients, all of them men, with the average age of 31 years were treated for subtalar fractures. Five patients were diagnosed with medial dislocation and one with lateral dislocation.

[Magnetic resonance imaging in the diagnosis of intra-articular lesions of the knee].

Purpose Of The Study: Magnetic resonance imaging (MRI) has the highest sensitivity of all methods for the diagnosis of intra-articular knee injuries. In spite of this, its benefit for the decision-making algorithm is questionable. The aim of this study was to evaluate the real situation in our regional conditions.

[Acute injuries of lateral ankle joint ligaments].

Acute injuries of the lateral ankle ligaments are one of the most common form of injury involving the musculoskeletal apparatus. Treatment usually range from cast immobilisation or acute surgical repair to functional rehabilitation. The aim of our study was to evaluate the incidence of different grades of acute injuries of lateral ligaments of the ankle joint in our patients group and to compare the results of non surgical versus surgical treatment of third grade injuries.

A new cyclization to fused pyrazoles tunable for pericyclic or pseudopericyclic route: an experimental and theoretical study.

2-Pyrazinyl (2) and 3-pyridazinylketone arylhydrazones (6) and their benzologues undergo a ring closure reaction to yield pyrazolo[3,4- b]pyrazines (4) and pyrazolo[4,3- c]pyridazines (7), respectively, in acceptable to good yields. The reaction was found to be accelerated by using acidic or basic conditions. Quantum chemical calculations suggest the key step of the mechanism to be a direct cyclization; analysis of aromaticity based on computed magnetic properties revealed its medium-dependent pericyclic or pseudopericyclic character.

Effects of static magnetic field and pulsed electromagnetic field on viability of human chondrocytes in vitro.

Effects of electromagnetic fields (EMFs) on human cell lines were described in numerous studies, but still many questions remain unanswered. Our experiment was designed with the aim of studying the effects of EMFs on the metabolic activity of chondrocytes in vitro. Human chondrocyte in vitro cultures, cultured in medium supplemented with 20 % fetal calf serum, were exposed to static magnetic field (SMF) (intensity of 0.

Preliminary clinical experience with the preparation and therapeutic use of autologous osteoblasts and chondrocytes.

Particular results of autologous osteoblasts preparation from patient's bone marrow and autologous chondrocytes from cartilage, both for therapeutic application are given. Osteoblastic cells were cultivated from fresh bone marrow in the presence of dexamethasone in alpha MEM medium containing 10% of patient's and 10% of fetal bovine sera and other necessary additives without any cytokine stimuli. Alkaline phosphatase cell surface activity was used as a marker for quick osteoblastic phenotype confirmation.

[Repair of chondral defects of the knee using a combination of autologous chondrocytes and osteochondral allograft--an animal model. Part I: in vitro culture of autologous chondrocytes].

Purpose Of The Study: In the study we used in vitro cultivated autologous chondrocytes in combination with osteochondral allografts for the treatment of local defects of articular cartilage on the animal model (rabbit).

Material: Chondrocytes for in vitro cultivation were harvested by biopsy of articular cartilage of rabbit. For the monolayer cultivation we used Nutrient mix F 12 (Gibco BRL) with addition of Lascorbic acid (50 micrograms/ml, Sigma) and insulin-trasferin-selenium (A 6.

[Evaluation of replantations with regard to duration of treatment and sick-leave.].

The authors compare results of replantations performed at the Orthopaedic Clinic of the Medical Faculty, Safarik University in Kosice, Replantation Centres in Austria (which are part of traumatological hospitals) and results of replantations at the Clinic of Plastic and Aesthetic Surgery in Brno. They base their evaluation on the number of the survival of replants, period of treatment and sickleave. In the course of 7 years (1991 through 1997) there were 157 patients operated on at the Orthopaedic Clinic of the Medical Faculty, Safarik University in Kosice for replantation and revascularization.

[Iatrogenic gonitis.].

The authors draw attention to the problem of iatrogenic gonitis. They analyze the causes of their development and draw attention to the possible negative effect of intraarticular therapy in patients with affections of the joints in orthopaedics. During the past seven years they recorded 54 cases of purulent iatrogenic gonitis after administration of corticoids and chondroprotective substances administered in out-patient departments.

[Iatrogenic gonitis.].

The authors pay attention to problems of iatrogenic gonitis. They analyze the causes of their development, draw attention to possible negative influences of intraarticular treatment in patients with articular affections in the field of orthopaedics. During the last seven years thy recorded 34 cases of purulent iatrogenic gonitis after ambulatory administration of corticoids and chondroprotective substances.

[Secondary and tertiary endoprosthesis of the hip joint.].

The authors analyze mechanical and biological causes of loosening of cemented total endoprosthesis of the hip joint. They reflect on the "most suitable" time of reoperation, based on clinical experience and the X-ray finding. The authors investigated on account of loosening of the first and second endoprosthesis of the hip joint resp.

[Absorbable materials in orthopaedic surgery.].

The authors discuss the use of biodegradable in vivo absorbable osteosynthetic material BIOFIX manufactured by BIOSCIENCE Ltd. Tampere Finland. They describe its composition, indications, contraindications of its use, possible complications as well as advantages of its use in orthopaedics, traumatology and microsurgery.

[Intrapelvic migration of a total hip prosthesis in rheumatoid arthritis].

The authors discuss the risk of mechanical loosening and protrusion of a cemented endoprosthesis of the hip joint after operation which is one of the few possibilities of palliative treatment in patients with rheumatoid arthritis. They deal in particular with specific features of surgical approaches whereby they select a modified method described by Eftekhar which makes it possible to resolve even severe grades of intrapelvic migration of the socket of a total endoprosthesis. The authors discuss possible complications which can be prevented if the relationship of intrapelvic structures to the protruded prosthesis is elucidated before operation.

[Use of autologous veins and streptokinase in vascular complications after replantation of the right forearm].

The authors present the case-history of a 20-year-old worker with an amputation of the forearm in the distal third. After shortening of the bone by 2.5 cm and osteosynthesis by means of grooved splints the blood vessels of the forearm were reconstructed by means of three autoveins.

[The fate of patients after surgical revision of 3 intervertebral spaces in lumbo-ischiadic syndrome].

The authors present a report on 9 patients (out of which five were female and four male patients) in the age group ranging from 34 to 55 years, who underwent in the period between 1 January 1982 and 31 December 1987 the revision of three intervertebral spades due to the unilateral lumbo-ischiadic syndrome. Operations of such an extent were performed only exceptionally, in case clinical symptoms and myelographic or CT examination proved the lesion of three intervertebral discs. Ensuing from the control examination performed in November 1988 two patients have been invalided and the rest of them working on a full load (five of them doing their original job and two doing a new one).