Patellar Tilt and Patellar Tendon-Trochlear Groove Angle Present the Optimum Magnetic Resonance Imaging Diagnostic Reliability for Patients With Patellar Instability.

Purpose: To describe, in controls and in a population with patellar instability, magnetic resonance imaging values of measurements representing major associated factors for patellar instability (patellar height, trochlear dysplasia, and extensor mechanism alignment), as well as their cutoff values.

Methods: In total, 323 knee magnetic resonance imaging scans, 142 with patellar instability and 181 controls without patellofemoral complaints (anterior cruciate, medial collateral ligament, meniscus ruptures or normal) were evaluated. Means, normality values in the control population, ideal cutoff values through receiver operating characteristic curves analysis, and interobserver reliability (intraclass correlation coefficient) were described for a series of measurements.

Femoral condyle osteochondral fracture treated with bone suture after acute patellar dislocation: a case report.

Osteochondral fracture after acute patellar dislocation in teenagers is relatively common (up to 60% of cases of patellar dislocation), but poorly diagnosed. There are several treatments proposed for this type of injury, but none well defined in the literature. A male patient, 13 years old, with a diagnosis of osteochondral fracture of the lateral femoral condyle after acute dislocation of the right patella.

Knee arthroplasty with rotating-hinge implant: an option for complex primary cases and revisions.

Objective: To present the indications, technical aspects, and initial results of the first cases using Endo-Model™ implants in Brazil.

Methods: A prospective study was conducted. It included nine patients submitted to a total knee arthroplasty, of which six were primary and three were revisions, using exclusively the Endo-Model™ implant.

Variants in endothelial nitric oxide synthase (eNOS) gene in idiopathic infertile Brazilian men.

Purpose: In recent years, considerable concern has been expressed about the deleterious effects of reactive oxygen species (ROS) on sperm function, because ROS at high levels is potentially detrimental to sperm function and quality. Nitric oxide (NO) is a powerful anti-oxidant present in seminal plasma. The aim of the study was to analyze the distribution of the of endothelial nitric oxide synthase (eNOS) gene (T-786C, G894T, e 4a/b) polymorphisms in idiopathic infertile Brazilian men and evaluate the possible role of these polymorphisms in sperm count.

Genetic variants in fibrinolytic system-related genes in infertile women with and without endometriosis.

Aims: The aim of this study was to evaluate urokinase-type plasminogen activator gene (uPA) and thrombin-activatable fibrinolysis inhibitor gene (TAFI) genotypes in a group of infertile women with and/or without endometriosis and controls.

Methods: A case-control study comprising 180 infertile women with endometriosis, 68 women with idiopathic infertility, and 152 fertile women as controls was carried out. Detection of uPA (C422T/rs2227564) and TAFI (G438A/rs2146881) polymorphisms was performed by TaqMan polymerase chain reaction.