The Relationship between Soft-Tissue Balance and Intraoperative Kinematics of Guided Motion Total Knee Arthroplasty

In this study, intraoperative kinematics of 95 patients whose TKA was performed with a guided-motion prosthesis (Journey II BCS Smith and Nephew) were measured using the computed tomography (CT)-free navigation system. All procedures were performed via the same soft-tissue balancing technique, which focused on the medial compartment because guided-motion TKA must acquire medial stability to induce medial pivot motion. We measured the extension and flexion osteotomy gaps using a force-controlled compartment-specific ligament tensioner with a distraction force of 80 N for each compartment and divided patients into three groups based on the relationship between extension and flexion joint osteotomy gaps of the medial compartment: group1– loose flexion gap, group 2–equal joint gap, and group 3–tight flexion gap. We compared the preoperative demographic characteristics, implant alignment, and intraoperative kinematics among the three groups. There was no difference between the preoperative demographic characteristics and postoperative implant alignment in the three groups. The relative tibial internal rotational angles in groups 1 and 2 were significantly larger than that in group 3 at 60°, 90°, and maximum flexion (p 
Source: Journal of Knee Surgery - Category: Orthopaedics Authors: Tags: Original Article Source Type: research

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Merck and Bayer have been granted FDA Breakthrough Device Designation for the collaborative Chronic Thromboembolic Pulmonary Hypertension (CTEPH) Artificial Intelligence Pattern Recognition software. CTEPH can be difficult to diagnose because its symptoms are similar to asthma and chronic obstructive pulmonary disease symptoms. CTEPH affects five people per million annually worldwide. Computed tomography pulmonary angiography and a ventilation/perfusion scan can be used to determine if thromboembolic occlusion is causing pulmonary hypertension in patients. Get the full story on our sister site, Medical Design &Outsourc...
Source: Mass Device - Category: Medical Devices Authors: Tags: Food & Drug Administration (FDA) Bayer Merck Source Type: news
New research has linked the risk of developing interstitial lung disease in rheumatoid arthritis patients with the promoter variant in MUC5B, which may also contribute to the development of idiopathic pulmonary fibrosis and an unsual interstitial pneumonia seen by high-resolution CT scan...
Source: The Rheumatologist - Category: Rheumatology Authors: Tags: Conditions Rheumatoid Arthritis ILD Interstitial Lung Disease MUC5B Rheumatoid Arthritis (RA) Source Type: research
(Wyss Institute for Biologically Inspired Engineering at Harvard) Researchers at the Wyss Institute have created a novel 3D printing workflow that allows cardiologists to evaluate how different valve sizes will interact with each patient's unique anatomy, before the medical procedure is actually performed. This protocol uses CT scan data to produce physical models of individual patients' aortic valves, in addition to a 'sizer' device to determine the perfect replacement valve size.
Source: EurekAlert! - Medicine and Health - Category: International Medicine & Public Health Source Type: news
Lung spindle cell carcinoma is a rare lung tumour with a poor prognosis, and its standard therapy has not been established. Furthermore, little work has been performed on the genetic characteristics of lung spindle cell carcinomas. Here, we report the first case of lung spindle cell carcinoma with an epidermal growth factor receptor mutation. The patient received gefitinib as first ‐line therapy. Lung spindle cell carcinoma is a rare lung tumour with a poor prognosis, and its standard therapy has not been established. Furthermore, little work has been conducted on the genetic characteristics of lung spindle cell carcinom...
Source: Respirology Case Reports - Category: Respiratory Medicine Authors: Tags: Case Report Source Type: research
A 62-year-old woman was admitted to our hospital in coma following the nontraumatic rupture of a left posterior inferior cerebellar artery aneurysm with subsequent intraventricular hemorrhage and acute hydrocephalus, affecting mainly the fourth ventricle with substantial adjacent edema (figure 1). Her Glasgow Coma Scale score was 3/15 and physical examination showed left hemiparesis, absent corneal and oculovestibular reflexes. Dexamethasone (4 mg q6h) and mannitol (1 g/kg initially, then 0.5 mg/kg q6h) were started, and a frontal bilateral trephination with external ventricular drainage was performed. Initial sedatio...
Source: Neurology Clinical Practice - Category: Neurology Authors: Tags: Coma, Critical care, Intracerebral hemorrhage Case Source Type: research
ConclusionsWe have found a better fusion rate and prevalence of fusion in the group treated with metal cages, reflecting the well-known osteoinductive properties of titanium and tantalum.
Source: Musculoskeletal Surgery - Category: Orthopaedics Source Type: research
AbstractA CT system with a tablet as mobile user interface and a wireless remote control for positioning and radiation release has recently been presented. Our aim was to evaluate the effects of a mobile CT examination workflow on the radiographers ’ performance compared to conventional examinations. A prototype of a radiation protection cabin was installed besides the gantry of a CT system. The CT system was equipped with a simplified user interface on a portable tablet and a mobile remote control. 98 patients with an indication for CT of t he chest were randomly assigned to examination using the mobile devices (stu...
Source: Journal of Medical Systems - Category: Information Technology Source Type: research
Patients with traumatic intracranial hemorrhage (TIH) frequently receive repeat head CT scans (RHCT) to assess for progression of TIH. The utility of this practice has been brought into question, with some studies suggesting that in the absence of progressive neurologic symptoms, the RHCT does not lead to clinical interventions.
Source: The American Journal of Emergency Medicine - Category: Emergency Medicine Authors: Source Type: research
ConclusionsWe conclude that the number of feeding arteries of spinal intra-dural AVMs can be estimated by using theF/D ratio obtained from 3D-DSA.Graphical abstractThese slides can be retrieved under Electronic Supplementary Material.
Source: European Spine Journal - Category: Orthopaedics Source Type: research
We present a 36-year-old man who presented to our emergency department with acute onset shortness of breath and syncope. He was found to have a large left atrial mass on initial computed tomography (CT) which was confirmed by echocardiography. Tumor biopsy and attempted excision were performed, showing a primary cardiac spindle cell sarcoma that was unable to be resected, to which the patient eventually succumbed to. Spindle cell sarcomas of the heart are very rare primary cardiac tumors, with a variable, non-specific presentation.
Source: Clinical Imaging - Category: Radiology Authors: Tags: Cardiothoracic Imaging Source Type: research
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