ABSTRACT The aim of the study was to evaluate results of closed intramedullary nailing using Talwarkar square nails in adult forearm fractures. We prospectively evaluated 34 patients with both bone forearm fractures. The average time to union was 12.8 (SD +3.2) weeks with cast support for a mean of 8.2 weeks. Union was achieved in 31 out of 34 patients. Using the Grace and Eversmann rating syst...

Injury to the distal radioulnar joint (DRUJ) is well recognised in association with fractures of the distal radius and ulna. Damage to the articular disc or, more correctly, the triangular fibrocartilage complex of the joint, occurring at the time of injury, is now well recognised as a major cause of persistent symptoms following Colles' fracture.' Isolated injury to the distal radioulnar artic...

We introduce a new kinematic model describing the motion of the human forearm bones, ulna and radius, during forearm rotation. During this motion between the two forearm extrem-positions, referred to as supination (palm up) and pronation (palm down), effects occur, that cannot be explained by the the established kinematic model of R. Fick from 1904. Especially, the motion of the ulna is not pro...

Aseptic nonunion of the radius and ulna is a major complication of forearm fractures, accounting for 2% to 10% of all forearm fractures. The aim of our study is to evaluate the functional and radiological results of surgical treatment of diaphyseal aseptic nonunion of the radius and ulna, with autologous bone grafting, decortication and internal plate fixation. A series of 21 patients (26 nonun...

Mechanical loading plays a key role in altering macroscopic and microscopic bone structure through functional adaptation; however, the anisotropic micro-organization of collagen and biological apatite (BAp) in adaptively created bone tissue is not well understood in spite of its importance in the mechanical function of bone. In this study, we artificially applied axial compressive loading (15N ...

place a finger on the styloid process of the ulna, and then pronate in the ordinary way, it will be quite evident that the bony point moves from its place. It will return again when the hand is again supinated. 2. Lecomte's Ring Experiment.?If the radius alone moves, then, since the axis of movement at the wrist passes through the head of the ulna,1 the transverse diameter of the forearm there ...

Current knowledge regarding the basic epidemiology of fractures is largely limited to a few fracture sites, notably those of the hip and distal forearm. To clarify the patterns of incidence of limb fractures in the elderly, we used data from a 5% sample of the U.S. Medicare population over age 65 years during the years 1986-1990. We identified incident fractures of the proximal humerus, other p...

Injury to the structures of the medial elbow is common among baseball players. The injury can result from repeated valgus stress of the elbow. Several types of injury to the structures of the medial elbow have been reported.1 These injuries cause valgus instability and pain of medial aspect of the elbow during pitch.2e4 Avulsion fractures of the sublime tubercle of the ulna are rare and general...

INTRODUCTION Diaphyseal fractures of both bones of the forearm are commonly encountered in clinical practice. Segmental radius shaft fractures are, however, less commonly seen. We hereby report two cases of segmental complex radius fracture with mid-shaft ulna fracture. Such type of cases are reported previously in children but rarely in adults. CASE REPORT In case-1, comminuted radius shaft ...

The efficiency of chicken eggshell membranes combined with a minimally invasive small osteotomy procedure of the ulna to accomplish an efficient release of the radius so that it can continue to grow in an unstressed manner was tested in rabbits. Eggshell membranes were extracted from chicken eggs, rinsed, dried and sterilized with ethylene oxide for 24 h. For reactivity testing, four separate s...