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Ron J Smith
BACKGROUND: Siege, a process of political domination aimed at isolating an entire population, is a unique threat to health-care provision. The aim of this study was to qualitatively examine the effects of the Israeli siege on the practices and systems that underlie health in the Gaza Strip. METHODS: Data were from participant observation between 2009 and 2017, including 20 interviews with doctors and health administrators in non-governmental organisations (NGO), government, and UN sectors...
February 21, 2018: Lancet
Akihiko Toda, Katsumasa Tei, Tomoyuki Matsumoto, Kazunari Ishida, Hiroshi Sasaki, Kazuki Kodato, Yuichiro Nishizawa, Shinsuke Kirizuki, Nao Shibanuma, Hiroomi Tateishi, Ryosuke Kuroda, Masahiro Kurosaka
Soft tissue impingements are well-known complications of total knee arthroplasty. The impingements usually occur between the medial or lateral femoral component and tibial insert, and between the patella and femoral components. We report a rare case of impingement of the soft tissue between the femoral intercondylar fossa and post of the polyethylene insert, which caused pain and walking disability. After the surgery for the arthroscopic removal of the soft tissue, the symptoms disappeared. However, prosthetic loosening of the femur occurred several months after the arthroscopic surgery, requiring revision surgery...
January 2018: Asia-Pacific Journal of Sports Medicine, Arthroscopy, Rehabilitation and Technology
Tun Hing Lui, Yuk Chuen Siu, Wai Kit Ngai
Identification of the correct source of symptoms is the key in formulating the correct treatment plan for heel pain after calcaneal malunion. Calcaneofibular and posterior ankle impingements can occur due to malunion of a joint depressed-type calcaneal fracture. The purpose of this Technical Note is to report the technical details of posterior and lateral decompression through the posteromedial and posterolateral portals using posterior ankle endoscopy.
February 2018: Arthroscopy Techniques
Victor Ortiz-Declet, Brian Mu, Austin W Chen, Jody Litrenta, Leslie C Yuen, Stephanie M Rabe, Benjamin G Domb
Arthroscopic acetabuloplasty involves trimming of bone from the acetabular rim. Although early techniques often involved detachment of the labrum prior to bone resection, recent studies have reported on acetabuloplasty without labral detachment. This method has the benefit of preserving the labro-osseous junction, but visualization of the acetabular rim may be more difficult. Compromised visualization can lead to incomplete resection and residual impingement. We describe an arthroscopic perspective called the "bird's eye" and "upper deck" views that facilitates optimal visualization of the acetabuloplasty without labral detachment...
January 2018: Arthroscopy Techniques
Adam Witten, Mikkel B Clausen, Kristian Thorborg, Mikkel L Attrup, Per Hölmich
PURPOSE: Subacromial impingement syndrome (SIS) is associated with low self-reported shoulder function, impairments in shoulder strength and range of motion (ROM), and pain. It is not known how the symptomatology associated with SIS is reflected in the choice of treatment. This study compares self-reported shoulder function, shoulder strength, ROM, and pain in patients with SIS considered candidates and non-candidates for subacromial decompression (SAD). METHOD: Self-reported shoulder function (Q-DASH and SPADI), maximum isometric muscle strength in shoulder abduction (Abd-strength) and external rotation (ER-strength), active abduction ROM (Abd-ROM) and passive internal rotation ROM (IR-ROM) were measured in a consecutive cohort of patients with SIS referred to an orthopedic outpatient clinic...
March 17, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
Christos Savva, Paraskevas Mougiaris, Christoforos Xadjimichael, Christos Karagiannis, Michalis Efstathiou
OBJECTIVE: The purpose of this study was to investigate the degree of test-retest reliability of grip strength measurement using a hand dynamometer in patients with shoulder impingement syndrome. METHODS: A total of 19 patients (10 women and 9 men; mean ± standard deviation age, 33.2 ± 12.9 years; range 18-59 years) with shoulder impingement syndrome were measured using a hand dynamometer by the same data collector in 2 different testing sessions with a 7-day interval...
March 2018: Journal of Manipulative and Physiological Therapeutics
Assem A Sultan, Anton Khlopas, Inyang Udo-Inyang, Morad Chughtai, Nipun Sodhi, Suela Lamaj, Roland Starr, Nicolas S Piuzzi, Anil Bhave, Michael A Mont
INTRODUCTION: Changes in pelvic position has been shown to affect acetabular coverage of the femoral head in total hip arthroplasty (THA) and may contribute to complications such as impingement, dislocation, or early wear. Understanding the kinematic changes of these positions during functional activities may help surgeons reach a consensus regarding stable hip mechanics and ideal implant positioning in THA. Therefore, in this study, we aimed to evaluate the following in patients who had unilateral hip OA: 1) dynamic changes; and 2) variability; in the following pelvic position parameters: A) tilt; B) obliquity; and C) rotation standing position to walking...
March 16, 2018: Surgical Technology International
Nicola C Casartelli, Nicola A Maffiuletti, Romana Brunner, Marcel Büchi, Reto Sutter, Christian W Pfirrmann, Florian D Naal, Michael Leunig, Mario Bizzini
Study Design Cross-sectional study. Background Visual rating of movement pattern in patients with femoroacetabular impingement (FAI) syndrome is of interest because poor control of dynamic hip motion is frequently noted. Objectives To evaluate intra- and inter-rater agreement among physical therapists with different clinical experience, in performing visual rating of movement pattern quality of patients with FAI syndrome using a semiquantitative scale. Methods A video camera was used to record the performance of 34 patients with FAI syndrome performing single-limb standing, squat, frontal lunge, hop lunge, bridge and plank...
March 16, 2018: Journal of Orthopaedic and Sports Physical Therapy
Andrea B Mosler, Rintje Agricola, Kristian Thorborg, Adam Weir, Rod J Whiteley, Kay M Crossley, Per Hӧlmich
Study Design Cross-sectional cohort study. Background Athletes with femoroacetabular impingement (FAI) syndrome have cam and/or pincer morphology, pain on orthopaedic testing, and often have reduced hip range of motion (ROM) and strength. However, cam and pincer morphology are also common in asymptomatic hips. Therefore, it is currently unknown whether the ROM and strength deficits observed in athletes with FAI syndrome result from the variance in their bony hip morphology or hip condition. Objectives To investigate the relationship between musculoskeletal screening findings and bony hip morphology in asymptomatic male soccer players...
March 16, 2018: Journal of Orthopaedic and Sports Physical Therapy
Pim van Klij, Joshua Heerey, Jan H Waarsing, Rintje Agricola
Synopsis Our understanding of femoroacetabular impingement (FAI) syndrome is slowly improving. The number of studies on all aspects (aetiology, prevalence, pathophysiology, natural history, treatment, and preventative measures) of FAI syndrome has grown exponentially over the past few years. This commentary provides the latest updates on the prevalence of cam and pincer hip morphology and its relationship with development of hip osteoarthritis (OA). Cam and pincer morphology is highly prevalent in the general population and in this paper is presented for different subgroups based on: age, sex, ethnicity, and athletic activity...
March 16, 2018: Journal of Orthopaedic and Sports Physical Therapy
Robert A DiStasio, Ge Zhang, Frank H Stillinger, Salvatore Torquato
Disordered stealthy hyperuniform materials are exotic amorphous states of matter that have attracted recent attention because of their novel structural characteristics (hidden order at large length scales) and physical properties, including desirable photonic and transport properties. It is therefore useful to devise algorithms that enable one to design a wide class of such amorphous configurations at will. In this paper, we present several algorithms enabling the systematic identification and generation of discrete (digitized) stealthy hyperuniform patterns with a tunable degree of order, paving the way towards the rational design of disordered materials endowed with novel thermodynamic and physical properties...
February 2018: Physical Review. E
Stefanos Farfaras, Ninni Sernert, Lars Rostgard Christensen, Erling K Hallström, Jüri-Toomas Kartus
BACKGROUND: The long-term outcome after the treatment of subacromial impingement syndrome (SAIS) with either nonsurgical or surgical methods has not been thoroughly investigated. Hypothesis/Purpose: The purpose was to evaluate the long-term clinical outcome and the presence of rotator cuff injuries and osteoarthritis (OA) after the surgical and nonsurgical treatment of SAIS. The hypothesis was that, at a minimum 10 years after the initial treatment, patients who had undergone acromioplasty would have a better clinical outcome and run a lower risk of developing rotator cuff ruptures and OA as compared with those treated with physical therapy...
March 1, 2018: American Journal of Sports Medicine
Marco Ornigotti
In this work, I present a full analytical theory for the Goos-Hänchen and Imbert-Fedorov shifts experienced by an Airy beam impinging on a dielectric surface. In particular, I will show how the decay parameter α associated with finite energy Airy beams is responsible for the occurrence of giant angular shifts. A comparison with the case of Gaussian beams is also discussed.
March 15, 2018: Optics Letters
J H Bin, M Yeung, Z Gong, H Y Wang, C Kreuzer, M L Zhou, M J V Streeter, P S Foster, S Cousens, B Dromey, J Meyer-Ter-Vehn, M Zepf, J Schreiber
We report on the experimental studies of laser driven ion acceleration from a double-layer target where a near-critical density target with a few-micron thickness is coated in front of a nanometer-thin diamondlike carbon foil. A significant enhancement of proton maximum energies from 12 to ∼30  MeV is observed when a relativistic laser pulse impinges on the double-layer target under linear polarization. We attributed the enhanced acceleration to superponderomotive electrons that were simultaneously measured in the experiments with energies far beyond the free-electron ponderomotive limit...
February 16, 2018: Physical Review Letters
Cristina Mammucari, Anna Raffaello, Denis Vecellio Reane, Gaia Gherardi, Agnese De Mario, Rosario Rizzuto
Mitochondrial Ca2+ is involved in heterogeneous functions, ranging from the control of metabolism and ATP production to the regulation of cell death. In addition, mitochondrial Ca2+ uptake contributes to cytosolic [Ca2+ ] shaping thus impinging on specific Ca2+ -dependent events. Mitochondrial Ca2+ concentration is controlled by influx and efflux pathways: the former controlled by the activity of the mitochondrial Ca2+ uniporter (MCU), the latter by the Na+ /Ca2+ exchanger (NCLX) and the H+ /Ca2+ (mHCX) exchanger...
March 15, 2018: Pflügers Archiv: European Journal of Physiology
G Möckel, W Miehlke
OBJECTIVE: Tenotomy of the psoas tendon in symptomatic internal coxa saltans or psoas impingement should relieve pain. INDICATIONS: Indicated in conservative treatment-resistant internal coxa saltans and in psoas impingement. CONTRAINDICATIONS: Contraindications are symptomatic psoas pathologies in hip dysplasia patients. SURGICAL TECHNIQUE: Three different procedures exist with the arthroscopic technique, in which the psoas tenotomy can be performed at one of three different levels...
March 14, 2018: Operative Orthopädie und Traumatologie
Miltiadis Argyropoulos, Matthew Kent
Background: Open reduction internal fixation of displaced 3 and 4-part proximal humerus fractures is an effective treatment modality particularly for the younger age group, but it is not without complications. Fixed angled locking screw plates are the mainstay of fixation. The A.L.P.S. Proximal Humerus Plating System is a new implant that has smooth locking pegs in the place of humeral head screws to help reduce glenoid damage in the event of cut-out and is designed to sit low on the humerus in order to reduce the risk of subacromial impingement...
2018: Open Orthopaedics Journal
Michael Ryan, Thomas Youm, Jonathan Vigdorchik
Hip arthroscopy as we know it today developed over the last 15 to 20 years, yet its true beginning is far more dated. Initially developed as a means of removing loose bodies or as a means of lavage, hip arthroscopy was not utilized to treat femoroacetabular impingement (FAI) until much later. Its usefulness as a means of treating FAI did not arise until hip impingement was understood to be causal in the development of degenerative changes of the labrum and articular surfaces. As our understanding of FAI grew, the tools for treating it developed in tandem...
March 2018: Bulletin of the Hospital for Joint Diseases
Eric C Arakel, Blanche Schwappach
The coat protein complex I (COPI) allows the precise sorting of lipids and proteins between Golgi cisternae and retrieval from the Golgi to the ER. This essential role maintains the identity of the early secretory pathway and impinges on key cellular processes, such as protein quality control. In this Cell Science at a Glance and accompanying poster, we illustrate the different stages of COPI-coated vesicle formation and revisit decades of research in the context of recent advances in the elucidation of COPI coat structure...
March 13, 2018: Journal of Cell Science
Richard C Mather, Shane J Nho, Andrew Federer, Berna Demiralp, Jennifer Nguyen, Asha Saavoss, Michael J Salata, Marc J Philippon, Asheesh Bedi, Christopher M Larson, J W Thomas Byrd, Lane Koenig
BACKGROUND: The diagnosis and treatment of femoroacetabular impingement (FAI) have increased steadily within the past decade, and research indicates clinically significant improvements after treatment of FAI with hip arthroscopy. PURPOSE: This study examined the societal and economic impact of hip arthroscopy by high-volume surgeons for patients with FAI syndrome aged <50 years with noncontroversial diagnosis and indications for surgery. STUDY DESIGN: Economic and decision analysis; Level of evidence, 2...
March 1, 2018: American Journal of Sports Medicine
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