INTRODUCTION Acute patellar dislocation is a relatively common problem. The most common dislocation is laterally in the coronal plane. Sometimes spontaneous reduction occurs, but if not, closed reduction can easily be done. In this paper, we report a very uncommon type of locked dislocation which required an open reduction. CASE PRESENTATION A 16-year-old girl of Hispanic origin sustained a s...

A 26-year-old Olympic wrestling athlete presented with a pectoralis major muscle injury, glenohumeral instability and acromioclavicular joint dislocation separately. The patient underwent surgical treatment to repair these injuries. The pectoralis major muscle was reconstructed with a semitendinosus tendon graft using the endobutton technique, as described by Pochini et al. Treatment of the tra...

INTRODUCTION Dislocation of the radial head, congenital or traumatic, anteriorly, posteriorly or laterally displaced, requires surgery to reseat and stabilize the head of the radius within the joint, in order to restore elbow flexion and, as much as possible, pronation-supination. SCOPE This article is meant to present the technique of proximal radial-ulnar ligament plasty using the extensor ...

The size-dependence of the plastic response of single-crystal micropillars at submicron/micron length scales under compression was investigated using three-dimensional discrete dislocation dynamics (DDD) simulations. In the simulations, the initial dislocation configuration consists of randomly distributed Frank–Read-type dislocation sources. The simulation results are compared with a dislocati...

Superior variety of anterior dislocation of the hip is a rare injury. Its occurrence with acetabular fractures has been documented infrequently. We report a case of superior dislocation of the hip with anterior column acetabular fracture. Open reduction of the hip and internal fixation of the fracture was carried out using a twin incision technique. The course to recovery has been uneventful.

These two cases with long-term survival after anterior and posterior AO dislocation point out the importance of making the diagnosis. Our simple technique of rapid CT confirmation of AO dislocation is a practical adjuvant procedure, particularly in patients with suspected intracranial injury.

Warm laser shock peening (WLSP) is a thermomechanical treatment technique combining the advantages of laser shock peening and dynamic strain aging (DSA). Through DSA, WLSP of steel increases the dislocation density and stabilizes the dislocation structure by pinning of mobile dislocations by carbon atoms. In addition, WLSP generates nanoscale carbide precipitates through strain-induced precipit...