Marek Synder

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The aim of the study was to assess the results of treating knee osteoarthrosis with total knee arthroplasty (TKA) after previous tibia and/or femur fractures resulting in axial limb deformities. Thirty-six knees (34 patients) were operated on. At the most recent follow-up, 4.8 years after surgery, all but one patient demonstrated an improvement in both(More)
The purpose of this study was to determine the incidence of the leg length discrepancy (LLD) in Legg-Calve-Perthes disease and whether there is any correlation between LLD and age at onset, gender, type of treatment, and severity of disease. The study population consisted of 261 patients with unilateral involvement who had reached skeletal maturity at last(More)
Background. Avascular necrosis of the femoral head occurring after surgery for developmental dysplasia of the hip can negatively affect the long-term prognosis of the involved hip. The purpose of our study was to evaluate a number of clinical and radiological risk factors for AVN after non-operative treatment of DDH. Material and methods. Clinical data and(More)
The aim of this study was to analyse the long-term results of surgical en bloc resection and replacement with non-vascularised, autologous fibular graft for the treatment of large benign humeral lesions without fixation. We retrospectively reviewed data of seven females and 13 males with unilateral benign lesions where steroid injection, curettage and bone(More)
Osteoarthritis is an incurable joint disease manifesting itself with gradually progressing degenerative changes, leading to premature motor disability. These changes mainly occur owing to an imbalance between the processes of degeneration and regeneration of articular cartilage structures. Until now many risk factors favoring the development of degenerative(More)
Background. Problems encountered during revision hip arthroplasty are presented, based on 30 years of experience at the Orthopedic Clinic of the Medical University of Lodz.<br /> Material and methods. During this period of time 96 cases (5,13%) with aseptic hip loosening were diagnosed. All patients were evaluated clinically based o the Merle(More)
The purpose of this study is to evaluate the changes in the shape of acetabulum from the onset of the disease to the skeletal maturity in Legg-Calvé-Perthes disease. The study population consisted of 243 patients with unilateral involvement who had reached skeletal maturity at last follow-up. All hips were treated by containment methods (which included bed(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)
We used Magnetic resonance imaging (MRI) in five patients (six knees), mean age 13.2 (12–15) years, with late-onset tibia vara (Blount's disease), to study the growth plate and its abnormalities. The MRI study was classified for severity of disease and compared with a radiographic classification. In severely involved knees, MRI indicated severe growth-plate(More)