Biomechanics of Flexion. An Essential Instrument for the Music. Flexion of thumb and fingers involve complex interactions of extrinsic and intrinsic muscles, soft tissues and joints of hand and forearm. The force generated by the muscles of the forearm converted into angular movements of fingers, which is essential for prehensile functions of hand. Intrinsic muscles guide those angular movements with a high precision. This make the hand capable of performing delicate functions with very fine discrimination. One of the extreme levels of hand functions is playing an instrument. A computer can well play a classical music masterpiece. What gives the music the emotions of the player is the physical abilities of the hand. Perfect harmony in music is closely correlated with the perfect harmony of soul and the mechanics of the hand. In this lecture, how the hand works and how it is used in playing music will be presented.
Hand Surgery Unit, Orthopaedic and Trauma Department, Madrid, Spain.
Open reduction and plate fixation of distal radius fractures remains an important adjunct in treatment of intra-articular distal radius fractures. Recognition of fracture pattern is essential for correct reconstruction of articular surface of distal radius fractures. Multiplanar reconstruction computed tomography imaging will provide useful information to demonstrate what corners of the radiocarpal and distal radio-ulnar joint are involved in the fracture and the appropriate approach, reduction and fixation of all involved fragments. These principles will be demonstrated by showing different clinical cases with focus on approach and fixation of the intra-articular distal radius fracture.