objective: resistance to fracture is a critical issue when it comes to tooth restoration. the purpose of this study was to evaluate the fracture resistance of pulpotomized primary molars restored with glass ionomer (gi), amalgam and composite resin with and without cusp reduction.   methods: in this in-vitro experimental study, 60 extracted primary teeth were randomly divided into 6 groups of 1...

abstract traumatic hip dislocations are common in high-energy motor vehicle accidents. we present a case of a 43-year old man who sustained posterior hip dislocation with posterior wall acetabular fracture and ipsilateral intertrochantric fracture following a motorcycle accident. urgent open reduction and internal fixation of the hip fracture-dislocation and fixation of intertrochantric fractur...

  Simultaneous mid third clavicle fracture and acromioclavicular joint dislocation is a rare combination injury, as a result of high-energy trauma. We report a patient with a middle third clavicle fracture and ipsilateral grade three-acromioclavicular joint dislocation, which is a rare combination. The patient wanted to get back to work as soon as possible, so the fracture was fixed with recons...

abstract background: unstable pelvic fracture, a result of high energy antero-posterior compression injury, has been managed based on internal fixation and open reduction. the mode of fixation in unstable pelvic fracture has, however, been a subject of controversy and some authors have proposed a need to address the issue of partial breach of the pelvic ring elements in these injuries. this stu...

PURPOSE To explore the possible surgical factors related with nonunion in femoral shaft fracture following intramedullary nailing. METHODS We retrospectively analyzed totally 425 patients with femoral shaft fracture in level I urban trauma center, including 254 males and 171 females, with an average age of 37.6 (ranging from 21 to 56) years old. The inclusion criteria included: (1) traumatica...

The study of mechanical behavior of the structural steel S400 under quasi- static and dynamic loading has been the subject of this investigation. In oder to obtain different stress - triaxiality conditions the specimens were notched with 1, 1.5, 2 and 3.5 mm notch radius. The results of fractography show as the velocity of tension increases, ductility reduces and a ductile-brittle transition oc...

PURPOSE This study was conducted in order to investigate the therapeutic effect of closed reduction according to a classification in patients with nasal bone fracture. METHODS The study was conducted retrospectively on 186 patients with a mean age of 38 years (range: 7 to 80 years). All patients were diagnosed by clinical and radiologic examination, and then classified according to Hwang's cl...

conclusions in our study, we treated this rare fracture successfully using a modified swashbuckler approach and found it to be a good approach for such fractures as compared to the conventional approach. case presentation a 32-year-old male sustained a bicondylar hoffa fracture of the right femur which was treated by open reduction and internal fixation using a modified swashbuckler approach. a...

conclusions we recognized this type of fracture and treated it similarly to both column fractures. we recommend that the classification of acetabular fractures be modified to include this type of fracture. introduction acetabular fractures are a common problem among young males. an acetabular fracture with disruption of the joint surface, if untreated, will rapidly lead to post-traumatic osteoa...