conclusions glenohumeral joint reduction with reconstruction of the humeral head seems to be possible even in a neglected locked posterior shoulder fracture-dislocation. if the depressed osteochondral fragment is still spheric, signs of the avascular necrosis are absent on ct, and mal:union: of the fragment has occurred, it is quite possible to reconstruct the head. although results of the case...

Posterior shoulder instability occurs less often than anterior shoulder instability but is increasingly recognized as a relatively common condition. The reverse Hill-Sachs lesion is present in some patients with posterior instability and is best described as an impaction fracture of the anterior humeral head. These reverse Hill-Sachs lesions can predispose the patient to recurrent instability e...

Posterior dislocations of the shoulder joint can result in an impression fracture over the anteromedial humeral head, termed the reverse Hill-Sachs lesion, the presence of which can contribute to recurrent dislocations. Methods described to repair this defect include using allografts, iliac crest and coracoid process autografts, and bone graft substitutes. We describe a novel technique using th...

A cute traumatic posterior glenohumeral dislocations are rare; they are typically caused by high-velocity trauma, epileptic seizures, or electrocution. Anterior impression fractures of the humeral head (reverse Hill-Sachs defect) occur in over 80% of individuals following a posterior dislocation of the shoulder. The size of reverse Hill-Sachs defects varies and has been reported to be as large ...

1 Department of Chemical Engineering, Rowan University, 201 Mullica Hill Road, Glassboro, New Jersey 08028-1701 2 Department of Civil and Environmental Engineering, Rowan University, 201 Mullica Hill Road, Glassboro, New Jersey 08028-1701 3 Department of Chemical Engineering, Rowan University, 201 Mullica Hill Road, Glassboro, New Jersey 08028-1701 4 Department of Chemical Engineering, Rowan Un...

PURPOSE To retrospectively evaluate the appearance of lesions of osseous and soft-tissue structures of the glenohumeral joint on magnetic resonance (MR) images after first-time traumatic posterior shoulder dislocation. MATERIALS AND METHODS The study was institutional review board approved and HIPAA compliant, as appropriate, for the four institutions at which the involved patients were treat...

It is often necessary to extract simple and understandable rules from databases containing inconsistent records and/or irrelevant elds. In this study we have assessed the feasibility of using a genetic programming (GP) approach to extract a single rule to describe such data. Instead of a tree structure we use a Reverse Polish (postx) representation. To assess the performance of the GP algorithm...