Introduction: Avascular necrosis or osteonecrosis of the femoral head is defined as a pathological process that results in a critical reduction in the blood supply to the hip head with increased intraosseous pressure. Avascular necrosis is a multifactorial disease. The treatment used so far consists of transosseous decompression of the femoral head and is the most commonly used method in the early stages of osteonecrosis. Aim: The aim of this study was to evaluate the results after application of bone marrow stem cells obtained from the pelvic ridge, which was applied to the necrotic zone after previous decompression. Material and methods. The study is of prospective character and included 30 patients with first, second, and third degrees of AVN according to the Ficat classification, determined with X-ray. The range of motion in the hip was examined preoperatively by using a goniometer, a radiological evaluation of the degree of AVN was performed, according to the Ficat classification, and the VAS scale and the Harris Hip Score were examined preoperatively and postoperatively. Results: The average value for the Harris Hip Score (HHS) preoperatively was: for Ficat I -66.32±5.1, for Ficat II - 49.19±3.4 and for Ficat III - 33.71±2.1. At the 3-month postoperative follow-up, the average HHS values were: 87.92±4.3 for Ficat I, 78.64±6.6 for Ficat II and 76.48±2.6 for Ficat III. The same values for HHS were obtained in the control examinations at the 6th and 12th month postoperatively, indicating the fact that good bone regeneration was achieved and the progression of the condition was prevented. A decrease in the HHS value was observed at the control examination at 1 year after the surgical treatment, in 3 patients according to the Ficat classification of grade III, in whom a total hip replacement surgery was performed. Conclusion: The use of stem cells in the treatment of avascular necrosis of the femoral head has achieved good functional results and reduced pain in operated patients. Radiographically, good bone regeneration was achieved and the progression of necrosis to a higher degree was prevented.
Total hip arthroplasty (THA) is now the gold standard for the surgical treatment of coxarthrosis. The appearance of bone loss after implantation of the hip endoprosthesis over time reduces the primary stability of the implant and leads to progressive looseningof the implant, or periprosthetic fracture, which are considered to be the most common causes of hip revision. The aim of this study is to evaluate the value of alendronate application in reducing periprosthetic osteolysis reduction after implantation of total cementless hip endoprosthesis. The study analyzed 50 patients operated on with implantation of a cementless total hip arthroplasty (THA). The first group of 25 patients recieved oral alendronate, calcium and vitamin D3 postoperatively. The second group of 25 patients were examined and followed postoperatively without any therapy. Patients were examined by RTG and DXA methods at 6, 12 and 18 months. The study showed a difference in the values of bone mineral density (BMD) and bone mineral content (BMC) in the interval of 6,12 and 18 months, using the DXA method. Alendronate therapy after total hip implantation reduces periprosthetic bone loss, maintains bone mineralization and strengthens the implant
Background. The prevalence of hip fractures is steadily increasing, as the population ages. These fractures are associated with significant morbidity and mortality. Most of these fractures are treated surgically. Factors related to surgical intervention can play a significant role in the outcome. This study examines the association of in-hospital mortality with the timing of surgery, sex, and age of patients treated surgically due to a hip fracture at Clinical Hospital Shtip in a 2-year long period. Material and Methods. A total of 348 patients admitted with a diagnosis of hip fracture who were treated surgically were identified. Data about sex and age were collected. The outcome was assessed for groups treated within 24, 48, 72, and more than 72 hours after admission. Descriptive statistical methods, chi-square test, t-test for independent samples, and odds - ratio with 95% confidence interval (CI) were used in statistical analysis. Results. The delay of surgical treatment beyond 24 hours did not increase the risk of death (OR=0.65, 95%CI=0.23-1.73). Delays beyond 48h and 72h increased the risk of death progressively (OR=1.17, 95%CI=0.50-2.75, and OR=1.65, 95%CI=0.69-3.95 respectively). Mortality was significantly higher in the 76-85-years age group. Conclusions. Association between surgical delay and in-hospital mortality in hip fracture patients is disputed. Confounding factors such as age, sex, comorbidities, and type of treatment determine the outcome. Patients with hip fractures, without any additional disease, should be operated on as soon as possible after admission to the hospital. Delay beyond 48 hours may increase the risk for in-hospital mortality.
Low - grade chondrosarcomas are primary malignant bone tumors that are resistant to chemo- and radiotherapy and are treated surgically. Sacral localization makes surgical resection technically difficult due to position, anatomic structures involved, and large tumor size at detection. The risk of complications is high. We present the introduction of a novel surgical technique in our country, sacrectomy with ilio-lumbar stabilization. This was performed on a 67-year-old man with low-grade chondrosarcoma of the sacrum with sacroiliac joint involvement. The procedure was performed via an antero-posterior approach in two stages. Ilio-lumbar fixation with a mesh cage bridge was used to obtain spinopelvic continuity and stability. Sacrectomy is a technically demanding procedure that requires careful preoperative planning and a multidisciplinary approach, as well as high level of surgical experience.
Reconstruction surgery after the excision of musculoskeletal tumors has advanced greatly in the last few decades. After resection of a large piece of bone, limb reconstruction (when is necessary) can be easily achieved with mechanical reconstruction with metallic prosthesis, or biological reconstruction with bone. The use of bone in reconstructive orthopedic surgery is to repair skeletal defects and accelerate bone healing. Bone grafts can be used to achieve this. Those can be allografts and autografts. The standard in bone grafting consists of tissue harvested from the patient, autograft, usually from the iliac crest or distal femur and tibia. Allografts are taken from donors or cadavers and they serve as alternatives to autograft in bone reconstruction. In our case, the patients were treated with wide resection of the bone segment. The defect was reconstructed with intercalary bone and osteosynthesis was made with locking plates. A cadaveric graft was used. Autogenous bone is generally used as an optimal graft because it integrates faster and with fewer complications. Allogenous bone can carry the risk of viral infection for the recipient. Anyhow, allografts can serve as the only therapeutic options, besides endoprosthesis devices for large size reconstruction.
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