Treatment of in-stent restenosis lesions, especially calcified with stent underexpansion, generally requires more complex techniques, such as rotational atherectomy. The case reported is a male patient 99% focal lesion at the origin first diagonal branch, where two stents were implanted 14 years ago. After failure balloon angioplasty alone, ablation plaque and part struts was performed using at...

An 87-year-old Asian male experienced progressive shortness of breath for two days. He presented symptoms and signs of decompens-ated heart failure and was diagnosed as non ST-segment elevation myocardial infarction, killip III. Coronary intervention was performed for chronic total occlusion of left anterior descend-ing artery. Unfortunately, coronary perforation happened during balloon anchori...

an attempt has been made to explore the general trends in the seismic response of planasymmetric structures when subjected to near-fault and far-fault ground motions. systems with structural wall elements in both orthogonal directions considering actual and common nonlinear behavior under bi-directional excitation were studied. idealized single-storey models with uni-axial eccentricity were emp...

BACKGROUND Although useful in the emergency treatment of pelvic ring injuries, external fixation is associated with pin tract infections, the patient's limited mobility and a restricted surgical accessibility to the lower abdomen. In this study, the mechanical stability of a subcutaneous internal anterior fixation (SIAF) system is investigated. METHODS A standard external fixation and a SIAF ...

Background: In recent years, many techniques for endoscopic closure of CSF leaks have been described and almost completely replaced the more traumatic transcranial and extracranial procedures. Aim of work: To evaluate endoscopic endonasal multilayer repair of CSF rhinorrhea of anterior and middle cranial fossae utilizing the vascularized middle turbinate rotational flap. Patients and methods: T...

BACKGROUND Proximal femoral bone loss during revision hip arthroplasty often requires bypassing the deficient metaphyseal bone to obtain distal fixation. The purpose of this study was to determine the effect of stem diameter and length of diaphyseal contact in achieving rotational stability in revision total hip arthroplasty. METHODS Twenty-four cadaveric femoral specimens were implanted with...

Thirty patients with isolated patellofemoral complications after total knee arthroplasty were compared with 20 patients with well functioning total knee replacements without patellofemoral complications. The epicondylar axis and tibial tubercle were used as references on computed tomography scans to measure quantitatively rotational alignment of the femoral and tibial components. The group with...

paddy de-awning using a de-awner increases the uniformity and flow rate of paddy grains through the orifices of hoppers, bucket elevators and chutes. in this study the effects of paddy variety, rotational blade speed and moisture content on performance of a prototype de-awner machine were investigated. the experiment was conducted in a factorial design with three factors, variety (hashemi and b...

the cadaver spine motion segment behavior under torsional load was evaluated with the disc intact, with partial anterior discectomy and with spacer insertion. the results of this study explain how anterior lumbar discectomy and interbody fusion (alif) affects the torsional stability of the motion segment. the pseudarthrosis rate of the anterior lumbar discectomy and interbody fusion (alif) is k...