Marek Drobniewski

Learn More
BACKGROUND There are still many questions related to aseptic femoral stem loosening. Systemic and local immune responses to the implanted "foreign body" is one of the reasons for loosening. The purpose of the study was to measure metal ion concentration (Ti, Co, Cr, Mo, Ni, Al) around loosened femoral stems and compare their levels around uncemented and(More)
The aim of the study was to compare long-term radiological results and appearance of avascular necrosis in hips with and without ossific nucleus of femoral head at the beginning of treatment. We retrospectively reviewed radiographs of 155 hips in 107 children treated for developmental dislocation of the hip. The age of children at the onset of treatment was(More)
BACKGROUND Cell signaling via Toll-like receptors (TLRs) leads to synovial inflammation in rheumatoid arthritis (RA). We aimed to assess effects of TLR2 and TLR4 stimulation on proinflammatory cytokine production by peripheral blood mononuclear cells (PBMCs) from patients with recent-onset RA, osteoarthrosis (OA), and healthy control (HC). METHODS PBMCs(More)
BACKGROUND One of the modern treatments of degenerative joint disease in young patients is hip replacement with the use of short stems. Possible advantages of stem application, in comparison to traditional procedures, include: a more physiological distribution of forces transferred through the proximal femur, prevention of stress shielding, saving more bone(More)
The goal of the study was to evaluate long-term results of hip arthroplasty in patients with ceramic-on-ceramic articulation. The follow-up involved 220 primary total hip arthroplasty procedures (188 patients, 101 women and 87 men) after implantation of the Mittelmeier cementless hip endoprosthesis. The mean age of patients at surgery was 44.5 years and the(More)
The study aimed to evaluate the degree of gleno-humeral joint deformation in children with persistent obstetric brachial plexus palsy and its effect on limb function. Computer tomography was performed in 24 children in the mean age of 6.1 years. There were eight boys and 16 girls. Gleno-scapular angle, congruency of gleno-humeral joint and joint deformity(More)
BACKGROUND The aim of this study was to compare the results of TKA performed with the use of a navigation system vs. conventional knee arthroplasty and to evaluate the effectiveness of navigation system support in TKA. MATERIAL AND METHODS We evaluated patients undergoing TKA for osteoarthritis in the years 2011-2013. Columbus prostheses were implanted in(More)
Total hip arthroplasty (THA) has become standard treatment for advanced degenerative changes of the hip. A few studies have reported promising clinical outcomes with the Metha stem fixated by metaphyseal anchoring. This study evaluated early bone remodeling around the Metha stem during 12 months of follow-up. The study population included 36 patients (18(More)
BACKGROUND The aim of our study was an evaluation of long-term clinical and radiological results of arthroplasty with BiCONTACT stem. MATERIAL AND METHODS We qualified 115 patients (125 hips) to the retrospective analysis with a minimum 10-year follow-up period. The mean age of patients on the day of surgery varied was 50.7 years. The follow-up period(More)
The purpose of our study was to analyze the final results of the treatment of calcanear solitary bone cyst in children and standardize management on the basis our material. We assessed retrospectively the case notes, radiographs and pathologic reports of six patients (seven solitary calcanear bone cyst) in the average age of 16.6 years. The mean follow-up(More)