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Internal impingement

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https://www.readbyqxmd.com/read/29443703/the-thrower-s-shoulder
#1
Jonathan D Gelber, Lonnie Soloff, Mark S Schickendantz
Overhead athletes subject their shoulders to extreme repetitive torque, compression, distraction, and translation stresses, resulting in adaptive changes of the soft tissues and osseous structures within and around the glenohumeral joint. These anatomic adaptations result in biomechanical enhancements, which improve performance. Understanding the difference between necessary and adaptive changes and pathologic findings is critical when making treatment decisions. Injuries to the shoulder of the overhead athlete can be generally classified into three groups: internal impingement, internal impingement with acquired secondary anterior instability, and primary anterior or multidirectional instability...
February 13, 2018: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/29443538/arthroscopic-surgery-or-physical-therapy-for-patients-with-femoroacetabular-impingement-syndrome-a-randomized-controlled-trial-with-2-year-follow-up
#2
Nancy S Mansell, Daniel I Rhon, John Meyer, John M Slevin, Bryant G Marchant
BACKGROUND: Arthroscopic hip surgery has risen 18-fold in the past decade; however, there is a dearth of clinical trials comparing surgery with nonoperative management. PURPOSE: To determine the comparative effectiveness of surgery and physical therapy for femoroacetabular impingement syndrome. STUDY DESIGN: Randomized controlled trial; Level of evidence, 1. METHODS: Patients were recruited from a large military hospital after referral to the orthopaedic surgery clinic and were eligible for surgery...
February 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29440159/multicentre-study-on-capsular-closure-versus-non-capsular-closure-during-hip-arthroscopy-in-danish-patients-with-femoroacetabular-impingement-fai-protocol-for-a-randomised-controlled-trial
#3
Christian Dippmann, Otto Kraemer, Bent Lund, Michael Krogsgaard, Per Hölmich, Martin Lind, Karen Briggs, Marc Philippon, Bjarne Mygind-Klavsen
INTRODUCTION: Hip arthroscopy has become a standard procedure in the treatment of hip joint pain not related to osteoarthritis or dysplasia in the young and active patient. There has been increasing focus on the contribution of the hip capsule to function and on stability following hip arthroscopy. It has been suggested that capsular closure after hip arthroscopy may prevent microinstability and macroinstability of the hip joint and reduce revision rate. However, it remains unknown whether capsular closure should be performed as a standard procedure when performing hip arthroscopies, especially in patients without additional risk factors for instability such as hypermobility or dysplasia of the hip...
February 10, 2018: BMJ Open
https://www.readbyqxmd.com/read/29439949/lower-limb-biomechanics-in-femoroacetabular-impingement-syndrome-a-systematic-review-and-meta-analysis
#4
REVIEW
Matthew G King, Peter R Lawrenson, Adam I Semciw, Kane J Middleton, Kay M Crossley
OBJECTIVE: (1) Identify differences in hip and pelvic biomechanics in patients with femoroacetabular impingement syndrome (FAIS) compared with controls during everyday activities (eg, walking, squatting); and (2) evaluate the effects of interventions on hip and pelvic biomechanics during everyday activities. DESIGN: Systematic review. DATA SOURCES: Medline, CINAHL, EMBASE, Scopus and SPORTDiscus until February 2017. METHODS: Primary aim: studies that investigated hip or pelvic kinematics and/or joint torques of everyday activities in patients with FAIS compared with the asymptomatic contralateral limb or a control group...
February 13, 2018: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/29426741/lower-shoulder-abduction-during-throwing-motion-may-cause-forceful-internal-impingement-and-decreased-anterior-stability
#5
Masaki Akeda, Teruhisa Mihata, Woong Kyo Jeong, Michelle H McGarry, Tetsuya Yamazaki, Thay Q Lee
BACKGROUND: Internal impingement and decreased anterior stability, which result from shoulder capsular loosening, are common shoulder pathologies in throwing athletes. The purpose of this study was to assess the effect of shoulder abduction angle on shoulder internal impingement and anterior shoulder stability during the simulated throwing motion. METHODS: Eight cadaveric shoulders were tested by simulating the late-cocking and acceleration phases of the throwing motion for intact and thrower's shoulder conditions...
February 7, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29423256/clinical-presentation-of-intra-articular-osteoid-osteoma-of-the-hip-and-preliminary-outcomes-after-arthroscopic-resection-a-case-series
#6
Andrea M Spiker, Ben-Zion Rotter, Brenda Chang, Douglas N Mintz, Bryan T Kelly
Intra-articular osteoid osteoma (IAOO) of the hip is a relatively rare diagnosis, but one that can closely mimic symptomatic presentation of femoroacetabular impingement (FAI). Although there are multiple case reports of osteoid osteoma (OO) in the hip, we present the largest case series of hip IAOO treated with hip arthroscopy and discuss limited patient-reported outcomes after treatment with hip arthroscopy. We retrospectively identified patients diagnosed with IAOO of the hip with confirmatory computed tomography, magnetic resonance imaging or biopsy diagnoses of OO...
January 2018: Journal of Hip Preservation Surgery
https://www.readbyqxmd.com/read/29406355/is-cam-type-deformity-that-important-commentary-on-an-article-by-matthew-j-kraeutler-md-et-al-femoral-version-abnormalities-significantly-outweigh-effect-of-cam-impingement-on-hip-internal-rotation
#7
Stuart C Marshall, S Charles Marshall
No abstract text is available yet for this article.
February 7, 2018: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29406341/femoral-version-abnormalities-significantly-outweigh-effect-of-cam-impingement-on-hip-internal-rotation
#8
Matthew J Kraeutler, Vivek Chadayammuri, Tigran Garabekyan, Omer Mei-Dan
BACKGROUND: The purpose of this study was to investigate the effects of femoral version, cam-type femoroacetabular impingement (FAI), and the combination of the 2 on the passive hip range of motion (ROM). METHODS: We prospectively analyzed a consecutive cohort of 220 patients (440 hips) who presented with unilateral or bilateral hip pain. The passive hip ROM was measured bilaterally with the patient in prone, supine, and lateral positions. Femoral version was measured and the presence of cam-type deformity was determined on preoperative computed tomography (CT) scans...
February 7, 2018: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29398210/prospective-observational-study-of-opioid-use-after-hip-arthroscopy-for-femoroacetabular-impingement-syndrome
#9
Daniel Cunningham, Brian Lewis, Carolyn Hutyra, Shane Nho, Steven Olson, Richard Mather
PURPOSE: To provide estimates of postoperative opioid use after hip arthroscopy for femoroacetabular impingement (FAI) syndrome and to identify risk factors for increased postoperative opioid use. METHODS: All patients aged at least 18 years who were undergoing hip arthroscopy for FAI syndrome performed by 1 of 2 hip-preservation surgeons between November 2015 and August 2016 were eligible for inclusion in this study. Target minimum enrollment was set at 30 patients per surgeon based on an a priori sample size calculation...
February 2, 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29389158/the-psychological-roots-of-anti-vaccination-attitudes-a-24-nation-investigation
#10
Matthew J Hornsey, Emily A Harris, Kelly S Fielding
OBJECTIVE: Strengthening of antivaccination movements in recent decades has coincided with unprecedented increases in the incidence of some communicable diseases. Many intervention programs work from a deficit model of science communication, presuming that vaccination skeptics lack the ability to access or understand evidence. However, interventions focusing on evidence and the debunking of vaccine-related myths have proven to be either nonproductive or counterproductive. Working from a motivated reasoning perspective, we examine the psychological factors that might motivate people to reject scientific consensus around vaccination...
February 1, 2018: Health Psychology: Official Journal of the Division of Health Psychology, American Psychological Association
https://www.readbyqxmd.com/read/29356641/shoulder-injuries-in-the-overhead-throwing-athlete-epidemiology-mechanisms-of-injury-and-imaging-findings
#11
Dana J Lin, Tony T Wong, Jonathan K Kazam
The unparalleled velocity achieved by overhead throwers subjects the shoulder to extreme forces, resulting in both adaptive changes and pathologic findings that can be detected at imaging. A key biomechanical principle of throwing is achieving maximum external rotation, which initially leads to adaptive changes that may result in a pathologic cascade of injuries. In addition to the well-established concepts of glenohumeral internal rotation deficit and internal impingement, osseous and soft-tissue injuries of the shoulder unique to overhead athletes are illustrated...
February 2018: Radiology
https://www.readbyqxmd.com/read/29349012/arthroscopic-reduction-and-internal-fixation-of-a-rim-fracture
#12
Raul Torres-Eguía, Jesús Más Martínez, Javier Sanz-Reig
Femoroacetabular impingement is uncommonly associated to a rim fracture. Complete resection of the fragment might result in iatrogenic instability or poor femoral head coverage. In this report, we describe the step-by-step surgical technique of arthroscopic partial resection of a rim fracture, reduction and internal fixation of the remaining fragment to correct the impingement, and preserve the adequate acetabular coverage.
December 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29306766/clinical-management-of-traumatic-superior-orbital-fissure-and-orbital-apex-syndromes
#13
Hai Jin, Shun Gong, Kaiwei Han, Junyu Wang, Liquan Lv, Yan Dong, Danfeng Zhang, Lijun Hou
OBJECTIVES: Both traumatic orbital apex syndrome (OAS) and traumatic superior orbital fissure syndrome (SFOS) are rare conditions after craniofacial injury. Few types of researches investigate the difference in clinical characteristics and outcome between them. We describe clinical features and cranial nerves functional recovery of traumatic OAS or SOFS and to discuss surgical decompression of these patients. PATIENTS AND METHODS: A retrospective study was performed of 15 patients diagnosed with traumatic OAS and 39 patients with traumatic SOFS from July 2010 to July 2017 in our hospital...
December 30, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29306270/ab-initio-molecular-dynamics-study-of-the-eley-rideal-reaction-of-h-cl-au-111-%C3%A2-hcl-au-111-impact-of-energy-dissipation-to-surface-phonons-and-electron-hole-pairs
#14
Linsen Zhou, Xueyao Zhou, Maite Alducin, Liang Zhang, Bin Jiang, Hua Guo
The reaction between an impinging H atom and a Cl atom adsorbed on Au(111), which is a prototype for the Eley-Rideal mechanism, is investigated using ab initio molecular dynamics at different incidence angles. The reaction yielding gaseous HCl with large internal excitation proceeds via both direct and hot-atom mechanisms. Significant energy exchange with both surface phonons and electron-hole pairs has been observed. However, their impact on the reactivity and final state distributions was found to be limited, thanks to the large exothermicity and small barrier of the reaction...
January 7, 2018: Journal of Chemical Physics
https://www.readbyqxmd.com/read/29297724/effect-of-a-novel-mobilization-with-movement-procedure-on-anterolateral-ankle-impingement-a-case-report
#15
Sudarshan Anandkumar
This case report describes a 50-year-old male who presented with right anterolateral ankle pain managed unsuccessfully with rest, medications, bracing, injection, physical therapy, and massage therapy. Clinical diagnosis of anterolateral ankle impingement was based on concordant symptom reproduction with palpatory tenderness and a positive lateral synovial impingement test. This case report is a potential first time description of the successful management of anterolateral ankle impingement utilizing a novel Mulligan's mobilization with movement procedure (consisting of internal rotation of the distal tibia) and taping with immediate improvements noted in pain, range of motion, and function...
January 3, 2018: Physiotherapy Theory and Practice
https://www.readbyqxmd.com/read/29289395/modified-false-profile-radiograph-of-the-hip-provides-better-visualization-of-the-anterosuperior-femoral-head-neck-junction
#16
Penny R Atkins, Evangeline F Kobayashi, Andrew E Anderson, Stephen K Aoki
PURPOSE: The purpose of this study was to quantify the amount of internal femur rotation required to visualize the 12 to 3 o'clock positions of the femoral head-neck junction as seen on the false-profile radiograph. METHODS: Computed tomography (CT) images of the femur were retrospectively reviewed from control subjects and cam femoroacetabular impingement (FAI) patients. Using an automatically determined clockface, the positions between 12 and 3 o'clock were determined...
December 27, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29284482/outcomes-of-arthroscopic-debridement-of-isolated-ligamentum-teres-tears-using-the-ihot-33
#17
Nicholas Pergaminelis, Jesse Renouf, Camdon Fary, Oren Tirosh, Phong Tran
BACKGROUND: Tears of the Ligamentum Teres are a common cause of groin pain. Tears of the ligament frequently co-exist alongside other bony or labral intra-articular hip lesions, which are also treated at the time of arthroscopy. For this reason, it is often difficult to assess the effect that debridement alone has on improving patient pain and function. This study aims to assess the short-term outcomes of arthroscopic debridement of isolated Ligamentum Teres tears using a validated patient-reported outcome score - the International Hip Outcome Tool (iHOT-33)...
December 29, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29280161/modification-of-aortic-cannula-with-an-inlet-chamber-to-induce-spiral-flow-and-improve-outlet-flow
#18
Nofrizalidris Darlis, Kahar Osman, Muhamad Hasbullah Padzillah, Jeswant Dillon, Ahmad Zahran Md Khudzari
Physiologically, blood ejected from the left ventricle in systole exhibited spiral flow characteristics. This spiral flow has been proven to have several advantages such as lateral reduction of directed forces and thrombus formation, while it also appears to be clinically beneficial in suppressing neurological complications. In order to deliver spiral flow characteristics during cardiopulmonary bypass operation, several modifications have been made on an aortic cannula either at the internal or at the outflow tip; these modifications have proven to yield better hemodynamic performances compared to standard cannula...
December 27, 2017: Artificial Organs
https://www.readbyqxmd.com/read/29275431/influence-of-femoral-bowing-on-range-of-motion-after-total-hip-arthroplasty
#19
Keisuke Akiyama, Takaaki Shibuya
PURPOSE: The influence of physiologic femoral bowing on range of motion (ROM) after total hip arthroplasty (THA) remains unknown. The purpose of this study was to investigate the morphology of the femur in patients who underwent THA, and to analyze the influence of femoral bowing on ROM due to implant impingement after THA. METHODS: The ROM was calculated from 100 hips in 90 patients who underwent THA using computed tomography data with a 3D dynamic analysis software...
December 23, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/29245139/scapular-focused-exercise-treatment-protocol-for-shoulder-impingement-symptoms-three-dimensional-scapular-kinematics-analysis
#20
Gisele Harumi Hotta, Adriane Lopes Santos, Kevin James McQuade, Anamaria Siriani de Oliveira
BACKGROUND: The present study aimed to describe the effects of a periscapular strengthening and neuromuscular training protocol in three-dimensional scapular kinematics and resting positioning in participants with shoulder impingement symptoms. Self-reported function was also evaluated. METHOD: The study group comprised 50 subjects with shoulder impingement syndrome (control group, n=25; treatment group, n=25). The treatment group underwent 8weeks of neuromuscular training and periscapular strengthening...
December 11, 2017: Clinical Biomechanics
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