Total knee arthroplasty (TKA) is a surgery method that can reduce symptoms and restore joint functions. Long-term success of this operation depends on the correct anatomical and mechanical planning before the prosthetic material implantation. Accurate implant alignment together with anatomical balance provides more successful clinical outcomes and longer duration of the prosthetic material. Improper preoperative planning may cause implant loosening and increased load on the knee joint. Conventional radiographs are the most frequently used imaging methods for this purpose. Computed tomography and magnetic resonance imaging may be used in required cases. In addition, computer-aided systems have come into use and successful results have been reported. Early radiographic evaluation is unnecessary after an uncomplicated TKA. Preoperative imaging has several aims such as to assess the severity of the disease, to analyze the reserve bone tissue, to review the relevant anatomy, and to decide which implant and surgical approach will be applied. In this article, we aimed to present the necessary and also auxiliary radiological evaluations made before TKA in order to achieve better clinical results.

The purpose of this study is to compare PI-RADSv2 with v2.1 in terms of interreader agreement. Material and Method:Two hundred-two patients who had both multiparametric prostate magnetic resonance imaging (mpMRI) and 12 quadrant systematic biopsies were included in this retrospective study. Acquisition parameters were totally complied with proposal of PI-RADSv2 and 2.1 guidelines. mpMRIs were evaluated by two radiologists independently. Index lesion's score was used to determine diagnostic performance of the systems. Gleason ≥ 3+4 tumors were considered clinically significant prostate cancer (CSCa). Kappa statistic was used to determine interreader agreement on overall PI-RADS scores. Area under the curve (AUC) was calculated in detection of CSCa using receiver operating characteristic curve (ROC).

AIM:To evaluate the parameters that affect bone retropulsion and restoration in patients with thoracolumbar junction (TLJ) vertebral compression fractures (VCF) without neurological deficits who underwent balloon kyphoplasty (BKP). MATERIAL and METHODS:Thirty-one of Frankel E and Arbeitsgemeinschaft für Osteosynthesefragen (AO) A3-4 type VCFs fractures at the TLJ, with bone retropulsion into the spinal canal, from 2017 to 2020, were evaluated retrospectively. Data was gathered on patient demographics and medical histories. Measurements of anterior vertebral heights, posterior vertebral heights, local kyphotic angles, spinal cord area, and bone retropulsion into the spinal canal (BRC) were evaluated preoperatively, early postoperatively, and late postoperatively. RESULTS:In those patients who underwent early surgery (<4 weeks postfracture), a significantly greater increase in anterior vertebral heights was seen between early postoperative and preoperative measurements than in patients who underwent late surgery (>4 weeks postfracture) (p=0.016). At the six-month follow-up, a significantly greater decrease in local kyphotic angle measurements was seen in patients over 65 years of age than those under 65 (p=0.023). Comparison of local kyphotic angles between sexes revealed a significant decrease in measurements at follow-up in female patients (p=0.029). Both early postoperative and late postoperative local kyphotic angle measurements of patients with a body mass index (BMI) ≥25 were significantly lower than those of patients with a BMI <25 (p=0.012). CONCLUSION:The restoration of vertebral angles and heights with the maximum level of BKP can effectively reduce BRC.