Biomechanical evaluation of acromioclavicular joint reconstructions using a 3-dimensional model based on the finite element method.

Background: This study aims to evaluate the influence of stabilization of acromioclavicular (AC) joint dislocation through the modified Weaver-Dunn technique and coracoclavicular (CC) ligaments using the finite element method. The goal is to determine which surgical technique allows behavior that is most similar to the joint, guaranteeing the necessary stability without restricting joint movements for the considered conditions.

Methods: The analysis is based on the three-dimensional finite element models.

Mechanical Study of the Properties of Sutures used in Orthopedics Surgeries.

 To evaluate the mechanical properties of sutures commonly used in orthopedic surgeries, characterizing their behavior through tensile tests and determining which one has greater mechanical strength.  Tensile tests of different sutures were performed in a mechanical testing machine BME 10 kN, using a 50 kgf maximum capacity loading cell. Seven samples from each suture material were tested.

Prospective study of ultrasound-guided peri-plexus interscalene block with continuous infusion catheter for arthroscopic rotator cuff repair and postoperative pain control.

Objective: This trial investigated postoperative analgesia in arthroscopic rotator cuff repair surgery patients under general anesthesia, associated with ultrasound-guided peri-plexus interscalene brachial plexus block (US-IBPB), and compared single injection to elastomeric pump continuous infusion of local anesthetics. Complications associated to both techniques are described.

Methods: In this prospective, quasi-randomized controlled clinical trial, 68 adults scheduled for elective arthroscopic rotator cuff repair were assigned to receive Group 1 (G1 = 41) US-IBPB with a 20 mL injection of 0.

Relationship between the critical shoulder angle and the development of rotator cuff lesions: a retrospective epidemiological study.

Objective: To perform a retrospective epidemiological study of radiographs in order to evaluate the relationship between the anatomy of the scapula and the development of rotator cuff injuries (RCIs).

Methods: This study retrospectively evaluated the relation of the critical shoulder angle (CSA) and RCIs from January 2011 to November 2013; patients were examined in the Orthopedics and Traumatology Department of a university hospital. The CSA was measured by radiographic standardization of two groups: a control group of 34 asymptomatic shoulders and a study group of 44 shoulders with complete RCIs.

TERRIBLE TRIAD OF THE ELBOW: EVALUATION OF SURGICAL TREATMENT.

Objectives: To evaluate the epidemiology of and surgical results from treating elbow fracture-dislocations, including only the cases in which dislocation is associated with fracture of the coronoid process and the radial head (terrible triad).

Methods: Nineteen patients were evaluated: 12 males and 7 females. The medical records were analyzed to gather data about the mechanism of injury, fracture pattern, time elapsed until surgery and type of procedure applied.

THIRD-DEGREE BURN IN THE REGION OF THE ELECTROSURGICAL PAD DURING SHOULDER ARTHROSCOPY: A CASE REPORT.

The number of shoulder arthroscopy procedures is increasing and, because of this, the frequency of related complications is also increasing. This report presents a case of third-degree burn from an electrosurgical pad during this procedure and serves as an alert regarding the possible causes and how to try to prevent this rare, but possible complication.