background appropriate treatment of acromioclavicular joint dislocation is controversial. acroplate fixation is one of the most common treatment methods of acromioclavicular joint (acj) dislocation. based on the risk of re-dislocation after acroplate fixation, we assumed that combined fixation with an acroplate and a coracoclavicular screw helps improve the outcome. objectives the main purpose ...

Shoulder injury (including isolated gleno-humeral dislocation, fracture dislocation or fracture without evidence of dislocation) is a rare complication of seizures occurring with or without direct trauma. Bilateral posterior fracture dislocation may occur as a direct consequence of the motor manifestations of generalized tonic–clonic seizures (GTCS) in the absence of trauma. Although described ...

An association between lateral patellar dislocation (LPD) and medial collateral ligament injury (MCL) has recently been demonstrated on MRI. The same valgus injury that disrupts the femoral MCL insertion can also cause a simultaneous MPFL tear at its femoral insertion, due to the close anatomical relationship of both ligamentous structures. Valgus laxity due to MCL-deficiency increases the Q-an...

Osteonecrosis in isolated fractures of the acetabulum without dislocation of hip seems to be a known complication, but to our knowledge it has not been reported adequately. The causative nature of post-traumatic femoral head osteonecrosis has not been studied critically. The pathophysiology of osteonecrosis in this case also eludes us. Striking evidence points towards the intra-operative blood ...

Study Design Case report. Objective The purpose of the present case report was to present a patient with a history of ankylosing spondylitis who sustained a dislocation of C6 on C7 and died soon after his presentation in the emergency room (ER). Methods An 88-year-old man was brought to the ER due to a neck injury secondary to a fall. Imaging of the cervical spine revealed anterior dislocation ...

We study the mechanics and statistical physics of dislocations interacting on cylinders, motivated by the elongation of rod-shaped bacterial cell walls and cylindrical assemblies of colloidal particles subject to external stresses. The interaction energy and forces between dislocations are solved analytically, and analyzed asymptotically. The results of continuum elastic theory agree well with ...

Traumatic dislocation of the radius at the elbow as an isolated lesion is considered a rare injury. Other authors have described the condition, particularly the clinical features including the classification of the types of dislocation, the possible mechanism of injury and the management (Thomas 1929, Stelling and Cote 1956, TraVaglini 1962, Vesely 1967, DePalma 1970, Smith 1972). Scant knowled...

We study the structure and formation energy of kinks in 1/2a<111> screw dislocations in metallic Tantalum using molecular dynamics with a first principles based many-body interatomic potential. In our study, four a/3<112> kinks are in a quadrupole arrangement in the simulation cell. We impose periodic boundary conditions in the directions perpendicular to [111] and fixed boundaries in the [111]...

This paper reports an investigation of the incidence of persistent generalised joint laxity in patients with congenital dislocation of the hip and in normal school children. Capsular laxity has attracted much attention in studies of the etiology of congenital dislocation of the hip joint. At first it was thought to be an isolated result of mechanical stretching. but it is now usually considered...

volar lunate dislocation is the fourth and last stage of perilunate dislocation. it is an uncommon injury of the wrist and its bilateral occurrence is so rare that only one case has been reported in the literature. we are presenting the second case of this kind of wrist injury, its treatment and outcome. keywords : lunate bone, perilunate, volar plate, bilateral, dislocation.