OBJECTIVE To evaluate factors associated with revision of dynamic hip screw implant in patients undergoing the procedure for the fixation of intertrochanteric fractures. METHODS The retrospective study was conducted at the Aga Khan University Hospital, Karachi, and comprised records of patients who had undergone dynamic hip screw fixation surgery between 2008 and 2012. Medical records and dat...

A simulated lateral humeral condylar fracture was created in each of the 52 humeri collected from 26 dogs. One humerus from each pair was stabilized with a 2.0 mm cortical bone screw which was inserted in lag fashion. The other humerus from each pair was stabilized with a 2.2 mm threaded diameter Orthofix pin inserted across the condyle. Prior to each repair, an antirotational K-wire was placed...

Using the unilateral pedicle screw fixation was thought to decrease the stiffness of the fixed segments. Various prospective, randomized studies were performed to determine whether unilateral pedicle screw fixation provides the necessities of bilateral fixation in one- or two-segment lumbar spinal fusion. In this study, four different unilateral pedicle screw fixation systems were evaluated to ...

T-Condylar fracture of the distal humerus is rare in the skeletally immature children and is very rare in young children, under 9 years of age. This fracture has been classified  as:  type A ( minimally displaced or undisplaced), type B (displaced  but  not comminuted ) and type C (displaced and comminuted). Herein, we report a T-Condylar fracture of the distal humerus in a 5-yr-old boy. This f...

INTRODUCTION Osteoporosis of the long bones challenges the orthopaedician in several ways. Amongst the difficulties encountered are the reduced bone mass, increased bone brittleness and medullary expansion, which must be factored in when deciding the type of surgical method to be used. One of the commoner complications of fixation of fractures in such bone is the occurrence of peri implant frac...

unilateral condylar hyperplasia is the main cause of mandibular asymmetry. radionuclide bone scanning is a useful procedure for functional evaluation of temporomandibular joint. in this study, 39 patients with normal bone scan and no facial asymmetry were studied. all patients were below 22 years of age. normal condylar uptake was determined in this group of patients. right & left condylar ...

DOI: 10.21276/sjams.2017.5.9.32 Abstract: Intertrochanteric fracture of femur is one of the most common fracture of the hip especially in elderly with osteoporotic bones, usually due to low energy trauma like simple falls. With rise in Osteoporosis and geriatric population the risk of getting intertrochanteric fracture is on rise. Rigid fixation with early mobilization of patients is the standa...

Unilateral condylar hyperplasia is the main cause of mandibular asymmetry. Radionuclide bone scanning is a useful procedure for functional evaluation of temporomandibular joint. In this study, 39 patients with normal bone scan and no facial asymmetry were studied. All patients were below 22 years of age. Normal condylar uptake was determined in this group of patients. Right & left condyla...

According to the problem of screw fracture of electric submersible pump unit in Shengtuo oilfield, the reasons for the screw fracture are analyzed from three aspects: material, strength and pretightening force. The preliminary result shows that the imbalanced pretightening force of screw is the main reason of screw fracture. By means of Ansys software, the static and modal analyses for the elec...

A preliminary study of acoustic emission during orthopaedic screw fixation was performed using polyurethane foam as the bone-simulating material. Three sets of screws, a dynamic hip screw, a small fragment screw and a large fragment screw, were investigated, monitoring acoustic-emission activity during the screw tightening. In some specimens, screws were deliberately overtightened in order to i...