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Prosthetic joint infection (PJI) after primary hip arthroplasty (PHA) in most cases results in severe surgical and socio-economic problems. Along with improving the technical support of arthroplasty and antibiotic prevention schemes, a key point in reducing the rate of infectious complications is predicting of PJI in each individual patient. The purpose of the study was to reveal the key features of our patients with infectious complications after PHA in comparison with the patients with a successful outcome of arthroplasty. Materials and Methods. The outcomes of 249 cases of PHA were evaluated retrospectively. 115 of them subsequently developed PJI (main group) and 134 were without infectious complications (control group). The comparative analysis of the groups was aimed at identifying the key preoperative, intraoperative and postoperative factors for PJI, as well as combinations of the factors characteristic for our patients. Results. The risk group for the development of infectious complications included patients undergone hip surgery (p40 kg/m2 (p = 0.170), preoperative hemoglobin 90 min (p410 ml (p69 mg/L on day 4 th to 5 th after PHA (p

Objective - to improve treatment outcomes in patients with medial fractures of the femoral neck through the development and introduction into clinical practice a new method of fixation with non-free plastic by the autograft from the iliac crest on a permanent muscular-vascular pedicle. Materials and methods. A comparative analysis of short- and long-term results of surgical treatment of 57 patients with medial fractures of the femoral neck, which were divided into primary and control groups. The study group included 24 patients who have undergone an osteosynthesis with cannulated screws with additional autoplasty with vascularized graft from the iliac crest. The control group consisted of 33 patients who underwent fixation with cannulated screws for the traditional method. Results. The use of non-free bone autoplasty in the main group of patients provided the best short- and long-term outcomes: fracture healing occurred in all cases in a period of 6 to 8 months. The long-term results of treatment of 22 patients after 2-6 years after the operation showed comparatively better anatomical functional outcomes. Conclusions. The indications for the clinical use of the fixation with the non-free bone autotransplantation are prognostically unfavorable for the union medial fractures of the femoral neck (II-III types by Pauwels or III-IV types by Garden) in patients aged under 60 years with no signs of deforming arthrosis II-III stages.