Pre-drilling and self-drilling pins screw-bone fixation stress interaction analysis induced by uniaxial compression loading

Drilling Induced Core Fractures and Crustal Stress

Drilling induced core fractures, usually ignored in standard core logging, contain substantial information on the directions of horizontal stresses and the relative magnitudes of the three principal stresses. These fractures have a variety of shapes, variously referred to as petal, petal-centreline, saddle, cup, and scallop. Surprisingly, the morphology of the fractures suggests they are produc...

Fixation of displaced subcapital femoral fractures. Compression screw fixation versus double divergent pins.

One hundred and twenty-seven consecutive patients with displaced subcapital fractures of the femoral neck (Garden Grade III or IV) all under 80 years of age and independently mobile, were randomly allocated to fixation with either double divergent pins or a single sliding screw-plate device. The incidence of non-union and infection in the sliding screw-plate group was significantly higher, and ...

Informative title: Thermal Osteonecrosis and Bone Drilling Parameters Revisited Concise title: Thermal Osteonecrosis and Bone Drilling

Bone drilling haptic interaction for orthopedic surgical simulator

Drilling procedure is widely used in orthopedic surgery to position reduced fractured bones and prosthetic components. However, successful execution of bone drilling requires a high level of dexterity and experience, because the drilling resistance is large and sometimes vibrates violently to difficultly grasp the hand-piece or even break the slender drill. This paper introduces haptic function...

Ureteral Penetration Caused by Drilling During Internal Pelvic Bone Fixation: Delayed Recognition

A 49-year-old man was referred to our department with profuse serous fluid discharge from a Penrose drain after undergoing internal fixation with metal screws for multiple pelvic bone fractures. A definite ureteral penetration was identified that was orientated from the lateral to the medial aspect of the right distal ureter. The patient was surgically treated with excision of the 2-cm injured ...