[Description of a novel arthroscopic surgical technique for radio-ulnar instability in a cadaveric model].

Introduction: The distal radioulnar joint is subjected to two resultant loads. Axial load caused by grip and the transversal load due to the possibility of lifting weight against gravity. Therefore, instability of this joint leaves as a consequence a great functional incapacity.

[Arthroscopy of the trapeziometacarpal joint: anatomical study on cadavers].

Introduction: Osteoarthritis of the trapeziometacarpal joint is one of the most common degenerative diseases of the hand for which a variety of surgical procedures have been developed. Arthroscopic techniques offer good results, although they have not been standardized.

Objective: To identify the main anatomical structures in relation to arthroscopy portals from the trapeziometacarpal joint and to determine their security area.