Recontruction

The variations in the distribution of solar radiation due to the  ~ 105  years Milankovitch cycle, which is connected to the Earth eccentricity variation, cannot explain the sharp drop in temperature of 6 °C ÷ 10 °C that marks the transition from the interglacial to the glacial age registered in the last ~ 5.5 106  years temperature variation behavior. More specifically, neglecting other effects, only a temperature variation of 0.2 °C ÷ 0...

Single leg drop jump (SLDJ) assessment is commonly used during the later stages of rehabilitation to identify residual deficits in reactive strength but the effects of physical capacity on kinetic and kinematic variables in male soccer players following ACL reconstruction remains unknown. Isokinetic knee extension strength, kinematics from an inertial measurement unit 3D system and SLDJ performance variables and mechanics derived from a force plate were measured in 64 professional soccer players (24.7 ± 3...

The aim is to present a technique for pediatric and adult ACL reconstruction using an intra-osseous suspensory fixation. This technique uses a 4-strands hamstring graft fixed in the femoral tunnel, with a loop locked in a polyetheretherketone (PEEK) cage. The ACLip® device offers an inside-out drilling system and a closer fixation to the joint than an extra-cortical button fixation. The technique can be easily used both in adults and in skeletally immature patients. The first practical experience shows promising results regarding the safety and the effectiveness of the technique...

BACKGROUND: With the increasing use of CT in clinical practice, limiting CT radiation exposure to reduce potential cancer risks has become one of the important directions of medical imaging research. As the dose decreases, the reconstructed CT image will be severely degraded by projection noise. PURPOSE: As an important method of image processing, supervised deep learning has been widely used in the restoration of low-dose CT(LDCT) in recent years. However, the normal-dose CT (NDCT) corresponding to a specific LDCT (it is regareded as the label of the LDCT, which is necessary for supervised learning) are very difficult to obtain...

Winter sports represent a relevant entity for knee injuries due to their great popularity. In alpine skiing and snowboarding, knee joint injuries are the most common affected body regions, while in ice hockey they are in third place. Various accident mechanisms lead to different injury types and severities. In addition to medial collateral ligament injuries, anterior cruciate ligament injuries are of particular importance. In professional sports, severe combination injuries are more common. Therapy is exemplified using the anterior cruciate ligament rupture...

INTRODUCTION: Skull base reconstruction is one of the greatest challenges extended endonasal endoscopic surgery. Many grafts and flaps from the endonasal fossa have been demonstrated to be useful in the control of complications such a cerebrospinal fluid leaks. Review and analysis of these resources are necessary in skull base recontruction to improve outcomes. OBJECTIVES: The target is to create a consensus document on the use of different endonasal flaps and grafts in the skull base surgery...

PURPOSE: To test the accuracy and reproducibility of a software prototype for semi-automated computer-aided volumetry (CAV) of part-solid pulmonary nodules (PSN) with separate segmentation of the solid part. MATERIALS AND METHODS: 66 PSNs were retrospectively identified in 34 thin-slice unenhanced chest CTs of 19 patients. CAV was performed by two medical students. Manual volumetry (MV) was carried out by two radiology residents. The reference standard was determined by an experienced radiologist in consensus with one of the residents...

INTRODUCTION: Skull base reconstruction is one of the greatest challenges extended endonasal endoscopic surgery. Many grafts and flaps from the endonasal fossa have been demonstrated to be useful in the control of complications such a cerebrospinal fluid leaks. Review and analysis of these resources are necessary in skull base recontruction to improve outcomes. OBJECTIVES: The target is to create a consensus document on the use of different endonasal flaps and grafts in the skull base surgery...

OBJECTIVES: Pelvic organ prolapse (POP) adversely affects women's quality of life. The aim of this study is to compare the life quality after obliterative surgery and reconstructive surgery for geriatric patients with advanced pelvic organ prolapse. MATERIAL AND METHODS: This matched case control study included sexually inactive women aged 65 years or older who had vaginal surgery for pelvic organ prolapse in Tepecik Education and Research Hospiltal between August 2012 and June 2019...

Osteoarthritis of the carpometacarpal joint of the thumb is a common disease, mostly affecting middle aged women. This article presents the results of a trapeziectomy with a ligament recontruction/tendon interposition procedure. We evaluated 60 male patients with 76 operated thumbs. The mean follow- up was 62 months (ranging from 13 to 133 months, with SD of 33 months). The outcome was measured with the disabilities of the arm, shoulder and hand score, a Nelson Hospital score, a Visual analogue scale score and range of motion...

OBJECTIVE: To investigate the operative effect of PFNA combined with reconstructive locking plate on the treatment of comminuted femoral intertrochanteric fracture which involving the lateral wall. METHODS: A total of 35 patients with comminuted femoral intertrochanteric fractures involving the lateral wall were surgically treated from November 2014 to January 2016. According to whether there was reconstruction of the lateral wall or not and the internal fixation method, the patients were divided into PFNA group (no reconstruction of the lateral wall), PFNA recontruction group (reconstructive locking plate was used to reconstruct the lateral wall, PFNA internal fixation)...

BACKGROUND: An anterior cruciate ligament (ACL) rupture often occurs during rotational trauma to the knee and may be associated with damage to extracapsular knee rotation-stabilizing structures such as the anterolateral ligament (ALL). PURPOSE: To investigate ex vivo knee laxity in 6 degrees of freedom with and without ALL reconstruction as a supplement to ACL reconstruction. STUDY DESIGN: Controlled laboratory study. METHODS: Cadaveric knees (N = 8) were analyzed using dynamic radiostereometry during a controlled pivotlike dynamic movement simulated by motorized knee flexion (0° to 60°) with 4-N·m internal rotation torque...

BACKGROUND: Surgical treatment of complicated aortic valve endocarditis often is challenging, even for experienced surgeons. We aim at demonstrating a standardized surgical approach by stentless bioprostheses for the treatment of aortic valve endocarditis complicated by paravalvular abscess formation. METHODS: Sixteen patients presenting with aortic valve endocarditis (4 native and 12 prosthetic valves) and paravalvular abscess formation at various localizations and to different extents were treated by a standardized approach using stentless bioprostheses...

We present a new reconstructive system encompassing prostheses and fat grafting as integrated tools to improve the final reconstructive outcome. Fat grafting in our view is a preoperatively planned part of the reconstruction. The final volume we achieve will be made up of fat and implants in a variable percentage according to patient's body contour and breast morphology. We used the hybrid breast reconstruction technique in more than 350 reconstructions, both immediate and delayed, two-stage and DTI, without experiencing higher loco-regional recurrence and complication rates when compared with conventional two-stage reconstructions, obtaining excellent aesthetic results and high patients' satisfaction levels...

The bilateral V-Y flap concept for fingertip reconstruction was first desribed by Kutler. This method has limitations, such as flap size and advancement, therefore larger flap modifications are described to increase the advancement capacity of the flaps. We described a small direct-flow homodigital island flap method, called the 'super Kutler flap', for recontruction of finger pulp defects. In addition, neurorrhaphy was performed between the cut ends of the digital nerves to prevent neuroma formation. This method was used in 10 fingers in patients who had undergone pulp tissue reconstruction of fingertip defects from May 2008 to October 2011...

Bacterial biofilms play key roles in environmental and biomedical processes, and understanding their activities requires comprehension of their nanoarchitectural characteristics. Electron microscopy (EM) is an essential tool for nanostructural analysis, but conventional EM methods are limited in that they either provide topographical information alone, or are suitable for imaging only relatively thin (<300 nm) sample volumes. For biofilm investigations, these are significant restrictions. Understanding structural relations between cells requires imaging of a sample volume sufficiently large to encompass multiple cells and the capture of both external and internal details of cell structure...

BACKGROUND: Instability of the sternoclavicular joint is a very uncommon disorder of the shoulder girdle. Acute traumatic dislocations are commonly treated nonoperatively. But severe displacement or chronic instability with recurrent symptomatic subluxation may require surgical intervention. We present our results with open reduction and internal fixation through an autologous gracilis tendon transplant or fiber tape in 8 patients treated surgically. The operative stabilisation of the sternoclavicular joint reduces pain level and improves function of the shoulder...

OBJECTIVE: The aim of this study is to report a case of restorative treatment of severely worn dentition. In this case report, the erosive/abrasive worn dentition have been reconstructed with metal ceramic crown on the posterior teeth and with ceramic veneers on the anterior teeth 1.3 - 2.3 and 3.4 - 4.3. METHODS: A prosthetic treatment was proposed to a male patient of 58 years old having a clinically significant tooth wear. After clinical exam, impressions of maxillary and mandible arches were taken with alginate to obtain preliminary casts for diagnostic waxing to all maxillary and mandibular teeth and fabrication of all provisional crowns in acrylic resin for posterior teeth, and from the diagnostic wax-up were fabricated a silicone guide masks for anterior teeth...

BACKGROUND: After a review of clinical cases of the Unit of Plastic Surgery of the University of Siena, Italy, we found that 22 patients undergoing lipofilling for breast recontruction needed less pain drugs compared to 18 patients which did not undergo lipofilling. In this work, the postoperative pain was analyzed in two groups of patients: a cohort treated with prosthesis and a cohort treated with prosthesis implant together with a lipofilling procedure. PATIENTS AND METHODS: During the immediate postoperative period, a visual analog scale for pain was submitted to every patient every eight hours until they were discharged, then every day for a week, every two days during the second week and once a week in the first three months...

Myosin interacting-heads (MIH) motifs are visualized in 3D-reconstructions of thick filaments from striated muscle. These reconstructions are calculated by averaging methods using images from electron micrographs of grids prepared using numerous filament preparations. Here we propose an alternative method to calculate the 3D-reconstruction of a single thick filament using only a tilt series images recorded by electron tomography. Relaxed thick filaments, prepared from tarantula leg muscle homogenates, were negatively stained...