INTRODUCTION Cleidocranial dysplasia (CCD) is a rare inherited skeletal dysplasia, often with prolonged retention of deciduous teeth and several impacted permanent successors and supernumerary elements. METHODS This article demonstrates the usefulness of titanium screws for orthodontic anchorage to induce eruption of the impacted teeth in a patient with CCD. A boy, aged 10 years 11 months, ha...

Traction followed by spica casting, the one method used to treat femoral shaft fractures in children that was used in the past, has given way to a multiplicity of methods today. To evaluate the morbidity and costs of these various methods, 85 fractures in 81 patients age six to 16 years were evaluated. Early spica casting gave excellent results with low complications and low costs. All surgical...

Maxillary anterior teeth are often referred to as “social six”; if ectopically placed affect the quality of life patient. This article presents a case report skeletal class II patient with Angle’s malocclusion and erupted right maxillary central incisor which is managed fixed orthodontics. highlights importance proper history taking, careful examination, investigations in reaching diagnosis for...

Traumatic dislocation ofthe hip with a fracture ofthe shaft ofthe femur on the same side is such a rare injury that, although there are several reports ofsingle patients, only two surgeons, Dehne and Immermann (1951), have reported treating a number ofpatients. Sir Astley Cooper in I 823 was the first to record the successful treatment of this condition. His patient, a boy of sixteen, had a fra...

This work introduces two mechanics-based approaches to modeling muscle forces exerted on curvilinear bone structures and compares the results with two traditional ad hoc methods of muscle loading. These new models use a combination of tensile, tangential, and normal traction loads to account for muscle fibers wrapped around curved bone surfaces. A computer program was written to interface with ...

BACKGROUND Unstable slipped capital femoral epiphysis (SCFE) has a relatively high risk of avascular necrosis of the femoral head. Standard treatment for unstable SCFE is still controversial. We reviewed unstable SCFE case series treated with the standardized protocol, which consisted of percutaneous pinning after prolonged skeletal traction. METHODS Our treatment regimen for unstable SCFE pa...

this paper concerns the design and analysis, of a ball type continuously variable transmission, (b-cvt). this b-cvt has a simple kinematic structure, and same as a toroidal cvt, transmits power by friction on the contact points between input and output discs, that are connected to each other by balls. after, a brief introduction of our b-cvt structure, the performance and traction efficiency of...