Aims. To assess the impact of the declaration of the state of emergency due to the COVID-19 pandemic on the number of visits to a
Patient safety is a major concern worldwide, but particularly high rates of adverse events are reported in the surgery setting. Orthopaedic and
Introduction: Fracture of the osteoporotic hip is more common in people over the age of 74. Purpose: To describe the co-operation between traumatologists and geriatric physicians in treating hip fractures among the elderly. Materials and methods: Prospective study covering the number of referrals from
Purpose: To determine the degree of burnout among resident physicians in orthopaedic surgery and
Purpose: We report the results of a study using fluoronavigation for distal locking of tibial and femoral nails and for screw fixation of femoral neck fractures in adults. We compared the duration of radiation exposure with the manual methods. Material and methods: Among a cohort of 220, 32 were selected randomly for the distal locking or cervical screwing using fluoronavigation. The series included 22 tibial nails, 3 femoral nails, and seven femoral neck fixations. The Medtronic ION navigation system was used. The computerised system recognises the relative spatial positions of the patient, the fluoroscope and the instrument. Data are transmitted via an optical camera. Results: We noted overall operative time and duration of radiation exposure by type of fracture. The duration of fluoroscopy ranged from 0.6 to 1.4 minutes for a tibial nailing using the conventional technique and 0.5 to 1 minute with fluoronavigation. For triple screwing, the fluoroscopy time was 1 minute 25 seconds. A total of 73 screws were inserted: 72 in correct position (one patient moved during the intervention). There were no nosocomial complications and no cases of compartment syndrome. Discussion: Repeated exposure to x-rays can be a limiting factor for locked nailing. It takes only a short time to install the material and learn the software. During this first experience, the already short radiation exposure was divided in half despite the fact that each screw was controlled separately, which with experience would not be necessary. Improvements in the software will allow controlling the rotation of the limb and avoid length discrepancies. Conclusion: In the
1. The history of microvascular surgery is reviewed; the necessary instruments and the technique of suture are described. 2. Modern trends in the experimental and clinical applications in orthopaedic surgery and
The aim of this study was to create artificial intelligence (AI) software with the purpose of providing a second opinion to physicians to support distal radius fracture (DRF) detection, and to compare the accuracy of fracture detection of physicians with and without software support. The dataset consisted of 26,121 anonymized anterior-posterior (AP) and lateral standard view radiographs of the wrist, with and without DRF. The convolutional neural network (CNN) model was trained to detect the presence of a DRF by comparing the radiographs containing a fracture to the inconspicuous ones. A total of 11 physicians (six surgeons in training and five hand surgeons) assessed 200 pairs of randomly selected digital radiographs of the wrist (AP and lateral) for the presence of a DRF. The same images were first evaluated without, and then with, the support of the CNN model, and the diagnostic accuracy of the two methods was compared.Aims
Methods
Introduction. Trabecular bone score (TBS) is a parameter of bone microarchitecture that is determined by the level analysis of DXA images. TBS is associated with fractures in the preliminary case-control and prospective studies. The aim of this study was to assess the TBS role in the
Osteomyelitis caused by resistant bacterial strains can be dealt with antimicrobial agents which have a different mode of action compared to antibiotics. A very promising appears to be antimicrobial peptides (AMPs). We found and verified in vitro experiments that one of the most effective and least toxic antimicrobial peptides are contained in the wild bee venom. The aim of this study was to verify the efficacy of topically applied, synthetically prepared antimicrobial peptide (Hal 2/27) with carrier, originally isolated from the venom of the wild bee in experiments on laboratory rats. It was used 18 rats, which were indicated osteomyelitis of the left femurs. After a week of six rats were injected calcium phosphate carrier with AMP Hal 2/27, six rats received only a carrier without AMP and six other rats remained without further intervention. After a week, rats were sacrificed and X-ray was performed in all rats limbs. Rats who received carrier with AMP Hal 2/27 had less X-ray evidence of osteomyelitis of femurs compared to rats after administration of the carrier without AMP. Topical application of a new synthetic antimicrobial peptides isolated from wild bee venom (Hal 2/27) using local carriers seems to be a promising way to treat and prevent infectious complications in orthopedics and
Purpose: With the growing risk of nosocomial infections, one might expect to see a reinforcement of septic isolation wards in orthopaedics and
Purpose of the study: Dementia in the elderly subject aged over 75 years is currently an important public health problem. An important part of the activity in orthopaedic surgery involves this age group. In 2007, 16,812 elderly persons aged over 75 years were hospitalised in our University Hospital (769 in orthopaedic surgery): 1380 patients were considered demented (40 in orthopaedic surgery). The purpose of this work was to evaluate the cognitive function of this population in a teaching hospital unit of orthopaedic and
Though most humeral shaft fractures heal nonoperatively, up to one-third may lead to nonunion with inferior outcomes. The Radiographic Union Score for HUmeral Fractures (RUSHU) was created to identify high-risk patients for nonunion. Our study evaluated the RUSHU’s prognostic performance at six and 12 weeks in discriminating nonunion within a significantly larger cohort than before. Our study included 226 nonoperatively treated humeral shaft fractures. We evaluated the interobserver reliability and intraobserver reproducibility of RUSHU scoring using intraclass correlation coefficients (ICCs). Additionally, we determined the optimal cut-off thresholds for predicting nonunion using the receiver operating characteristic (ROC) method.Aims
Methods
Despite biomechanical well established implants and improved operation techniques we still have a too high rate of complications in orthopaedic and trauma surgery like non-union, implant loosening or implant associated infections. The development of bioactive implants could improve the clinical outcome. Growth factors are important regulators of bone metabolism. During fracture healing many growth factors or cytokines were locally released at the facture site. In several studies, different growth factors demonstrated osteoinductive and fracture stimulating properties. In vitro and in vivo studies showed a stimulating effect of Insulin-like growth factor-I (IGF-I), Transforming growth factor-A71 (TGF-A71) and Bone morphogenetic protein-2 (BMP-2) on osteo- and chondrogenetic cells. The exact effectiveness and the interaction of these growth factors during fracture healing is not known so far. Further, the local application of these factors for therapeutically use in fracture treatment is still a problem. A biodegradable poly(D,L-lactide)-coating of implants allows the local and controlled release of incorporated growth factors directly at the fracture site. The coated implant serves on the one hand for fracture stabilization and on the other hand as a drug delivery system. The coating has a high mechanical stability. The incorporated growths factors remain biologically active in the coating and were released in a sustained and controlled manner. To investigate the effect of locally released growth factors IGF-I, TGF-A71 and BMP-2 and the carrier PDLLA on fracture healing, standardised closed fracture models were developed with a close relationship to clinical situation. Further, possible local and systemic side effects were analysed. The results demonstrated a significantly higher stimulating effect of IGF-I on fracture healing compared to TGF-A71. The combined application of both growth factors showed a synergistic effect on the mechanical stability and callus remodeling compared to single treatment. The local release of BMP-2 also enhanced fracture healing significantly – comparable to combination of IGF-I and TGF-A71. However, a higher rate of mineralisation was measurable outside the fracture region using BMP-2 in a rat fracture model. Using a large animal model on pigs with a 1 mm osteotomy gap, the effectiveness of locally released growths factors could be confirmed. Further, the PDLLA-coating without any incorporated growth factors demonstrated a significantly effect on healing processes in both models. These investigations showed, that the local release of growth factors from PDLLA coated implants significantly stimulate fracture healing without any local or systemic side effects. Comparing systemic with local stimulation techniques, we found an improvement of fracture healing by systemic administration of growth hormone and local application of IGF-I and TGF-A71. However, the combined use of both simulation techniques did not lead to a further increase of healing processes. Investigations on the effectiveness and the interaction of growth factors during fracture healing demonstrated an dramatic effect in the early phases of healing processes. The growth factors stimulate the differentiation of osteoblasts with a higher production of collagen I in vitro and increase osteogenesis and vascularisation of the fracture callus in vivo. Further applications of the coating technology are the use of PDLLA and growth factor coated cages for the stimulation of intervertebral fusion and the use of PDLLA and Gentamicin coated implants in order to prevent implant associated infections. The first patients with open tibia fractures were treated with PDLLA and Gentamicin coated IM nails.