Current hip replacement femoral implants are made of fully solid materials which all have stiffness considerably higher than that of bone. This mechanical mismatch can cause significant bone resorption secondary to stress shielding, which can lead to serious complications such as peri-prosthetic fracture during or after revision surgery. In this work, a high strength fully porous material with ...

PURPOSE The purpose of this study was to systematically review clinical studies on the incidence of abutment screw loosening in single-implant restorations with different implant-abutment connection geometries. MATERIALS AND METHODS The literature search was conducted using several electronic databases. Specific terms were used for the database search, which spanned the years 1990 to 2006. Th...

The quality of temperature distributions that can be generated with the multi-electrode current source (MECS) interstitial hyperthermia system, which allows 3D control of the spatial SAR distribution, has been investigated. For the investigations, computer models of idealized anatomies were used. These anatomical models did not contain discrete vessels. Binary-media anatomies, containing media ...

The main purpose of this work was to construct a clinically valid numerical model mandibular Kennedy class I patient rehabilitated with conventional removable partial denture and another two implant-assisted dentures at different implant locations. selected classified as ASA its mandible geometry reconstruction performed by the conversion Cone-Beam computed Tomography (CBCT) scan raw medical da...

BACKGROUND Implantation of testosterone pellets under the lateral abdominal wall skin is an old but popular and effective form of androgen replacement therapy. Extrusion of one or more pellets remains the most frequent adverse event. OBJECTIVE To determine whether an alternative implantation site (hip) and/or track geometry (two vs. four tracks) would reduce extrusion rates compared with the ...

BACKGROUND CONTEXT Vertebral end plate support is necessary for successful lumbar total disc replacement (TDR) surgery. Failure to achieve anterior column support as a result of lumbar TDR device undersizing could lead to implant subsidence and fracture. PURPOSE The purpose of the study was to examine the compressive biomechanical behavior of the vertebral end plate with varying sizes of disc...

The modern orthopaedic implants for applications in hips, knees, shoulders, and spines are composed of hard metal alloys or ceramics. tribo-logical sub-component is soft materials with good tribological properties – e.g. UHMWPE (Ultra High Molecule Weight Polyethylene). need to be machined into their final shape after the polymerization consolidation a blank profile near-net shaped implant. So ...

PURPOSE To report on preliminary results of a prospective study on MRI-assisted cervix cancer brachytherapy pre-planning. MATERIAL AND METHODS In six locally advanced cervix cancer patients, five days before the first brachytherapy fraction, tandem & ring applicator was inserted under para-cervical anaesthesia, MRI performed and applicator removed. Procedure-time and patient-tolerability were...