Computer-Assisted Modeling of Greater Tubercle Transposition Effect on Stress Distribution in Shoulder.

Background: The aim of the work was to investigate the influence of the position of a fractured greater tubercle of the humerus on stress distribution in the glenohumeral joint (GHJ) at shoulder abduction by performing stress-strain analysis (SSA).

Material And Methods: A simulated 3D model of the shoulder was constructed on the basis of anatomical and anthropometric data as close as possible to real ones using the SolidWorks software package.

Results: A finite-element model (FEM) was generated in a semi-automatic mode composed mostly of tetrahedral and hexagonal elements < 1 mm in dimensions.

THE ULTRASONOGRAPHY EXAMINATION OF SKELETAL MUSCLES IN TRAUMATIC ISCHEMIA (EXPERIMENTAL STUDY).

Objective: The aim: To establish indicators and significance of sonography in the evaluation of muscle necrosis in ischemia of the limb acording to quantitative ultrasonographic indicators and density of collagen by histological method.

Patients And Methods: Materials and methods: In experiments, rabbits modeled with 6-hour limb ischemia by applying an elastic tourniquet. On days 5, 15, and 30, ultrasound and histological studies of the muscles and correlation analysis were performed between the muscles' entropy and the degree of their damage (atrophy, fibrosis and necrosis).

Clinical Evaluation and Instrumental Diagnostics in Acute Acromioclavicular Joint Dislocation.

Background: The aim was to improve the diagnosis of acromioclavicular joint dislocation by studying the capabilities and characteristics of clinical and instrumental diagnostic methods. The idea is expressed that modern clinical and instrumental diagnostic methods comprise a large number of techniques, but no single algorithm for diagnosing injury to the AC joint has been developed. A gold standard for investigating and diagnosing acute AC joint dislocation does not currently exist.