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Background: The purpose of this article is to describe the surgical technique used by the authors and the outcome in the treatment of chronic posttraumatic instability of the distal radioulnar joint (DRUJ). Methods: A retrospective study was conducted analyzing the medical records of 11 patients with chronic posttraumatic instability of the DRUJ, treated by a foveal reattachment of the triangular fibrocartilage complex with dorsal capsular and extensor retinaculum imbrications between 2016 and 2017, with a follow-up evaluation of 1 year. Results: All patients reported pain relief and the absence of instability, returning to normal activities in 3 to 6 months. Disabilities of the Arm, Shoulder, and Hand (DASH) questionnaire ranged from 2 to 25, resulting in a mean score of 9.5. Forearm rotation averaged 89° of pronation and 85° of supination. Conclusion: Foveal reattachment of the triangular fibrocartilage complex with dorsal capsular and extensor retinaculum imbrications is an effective surgical procedure for the treatment of DRUJ chronic posttraumatic instability.

Background: The objective of this work was to perform a critical review of the 2-dimensional and 3-dimensional anatomy of the adult brachial plexus divisions and cords. Methods: Twelve adult brachial plexuses from fresh cadavers were dissected. All were male and aged between 30 and 50 years. Only corpses without brachial plexus injuries were selected. The purpose of the dissections was to identify the origin of the anterior and posterior divisions of the adult brachial plexus in their respective trunks, as well as the positioning of the posterior, lateral, and medial cords. Results: The posterior division of all trunks had a cranial and dorsal origin, while the anterior division of all trunks had a caudal and ventral origin. The posterior cord was the most cranial of all, the lateral cord was central, and the medial cord was the most caudal of all cords. The posterior division of the superior trunk was always between the suprascapular nerve and the anterior division. Conclusions: Brachial plexus diagrams in most textbooks and papers are different from what was found in our dissections. Contrary to the known diagram, the posterior divisions always had a cranial origin in the superior, middle, and inferior trunks.

Objective: The aim of this study was to identify the main diseases related to trigger finger. Methods: A retrospective, observational study was performed with data obtained through a computerized record of 75 patients with trigger finger diagnosis between July 2011 and October 2015. The diagnosis of metabolic syndrome was performed following National Cholesterol Education Program Adult Treatment Panel III (2001). Results: Patients' ages ranged from 50 to 84 years, with a mean age of 63 years. The ring finger was the most affected, followed by the middle finger, index finger, and little finger. Most had a grade 2 trigger finger classified by Green; the right hand involvement was more prevalent, as was the dominant hand. The incidence in women was twice as high as in men. Arterial hypertension, diabetes mellitus, and dyslipidemia were shown to be important associated diseases, but metabolic syndrome was the main association found. Conclusions: Metabolic syndrome in the group of patients studied in this scientific article seems to be the main associated disease.