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https://www.readbyqxmd.com/read/28400880/arthroscopic-findings-in-anterior-shoulder-instability
#1
REVIEW
Michael Hantes, Vasilios Raoulis
BACKGROUND: In the last years, basic research and arthroscopic surgery, have improved our understanding of shoulder anatomy and pathology. It is a fact that arthroscopic treatment of shoulder instability has evolved considerably over the past decades. The aim of this paper is to present the variety of pathologies that should be identified and treated during shoulder arthroscopy when dealing with anterior shoulder instability cases. METHODS: A review of the current literature regarding arthroscopic shoulder anatomy, anatomic variants, and arthroscopic findings in anterior shoulder instability, is presented...
2017: Open Orthopaedics Journal
https://www.readbyqxmd.com/read/28370312/changes-in-chondrolabral-mechanics-coverage-and-congruency-following-peri-acetabular-osteotomy-for-treatment-of-acetabular-retroversion-a-patient-specific-finite-element-study
#2
Spencer J Knight, Christine L Abraham, Christopher L Peters, Jeffrey A Weiss, Andrew E Anderson
Using a validated finite element (FE) protocol, we quantified cartilage and labrum mechanics, congruency, and femoral coverage in five male patients before and after they were treated for acetabular retroversion with peri-acetabular osteotomy (PAO). Three-dimensional models of bone, cartilage, and labrum were generated from computed tomography (CT) arthrography images, acquired before and after PAO. Walking, stair-ascent, stair-descent, and rising from a chair were simulated. Cartilage and labrum contact stress, contact area, and femoral coverage were calculated overall and regionally...
April 1, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28359696/partial-thickness-tears-involving-the-rotator-cable-lead-to-abnormal-glenohumeral-kinematics
#3
Gregory J Pinkowsky, Neal S ElAttrache, Alexander B Peterson, Masaki Akeda, Michelle H McGarry, Thay Q Lee
HYPOTHESIS: The objective of this study was to determine the biomechanical function of the rotator cable when a partial-thickness (>50%) tear is present. We compared intact specimens with partial tears of the anterior cable followed by partial anterior and posterior tears in regard to glenohumeral kinematics and translation. The hypothesis was that partial-thickness tears will lead to abnormal glenohumeral biomechanics, including glenohumeral translation and path of glenohumeral articulation...
March 27, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28298065/clinical-assessment-of-the-dynamic-labral-shear-test-for-superior-labrum-anterior-and-posterior-lesions
#4
Sonal Sodha, Uma Srikumaran, Kyubo Choi, Amrut U Borade, Edward G McFarland
BACKGROUND: Diagnosing superior labrum anterior and posterior (SLAP) lesions through physical examination remains challenging. The dynamic labral shear test (DLST) has been shown to have likelihood ratios (LRs) of 31.6 and 1.1 for diagnosing SLAP lesions. PURPOSE: To determine the clinical utility of the DLST for diagnosing SLAP lesions. STUDY DESIGN: Cohort study (diagnosis); Level of evidence, 2. METHODS: This prospective, consecutive case series included 774 patients who underwent diagnostic arthroscopy and a preoperative DLST between 2007 and 2013...
March 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28249340/arthroskopische-therapie-bei-spinoglenoidalem-ganglion
#5
Kilian Rueckl, Christian Konrads, Thomas Barthel, Maximilian Rudert, Friedrich Boettner, Piet Plumhoff
Aims and Indications A paralabral ganglion cyst of the shoulder can cause neuropathy of the inferior branches of the suprascapular nerve. This can lead to atrophy of the infraspinatus muscle. Arthroscopic decompression of the cyst in combination with repair of the associated labrum tear appears to be an effective treatment option. Methods Initially the connection of the cyst to the joint in the area of the posterior rim of the glenoid is identified arthroscopically. Following the decompression of the cyst the labrum tear is repaired to avoid recurrence...
February 2017: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/28229565/calcifying-tendinitis-of-the-long-head-of-the-biceps-brachii-and-superior-labrum-a-report-of-one-case-and-literature-review
#6
Xing-He Xue, Zhen-Hua Feng, Zhen-Xing Li, Xiao-Yun Pan
INTRODUCTION: Calcifying tendinitis of the shoulder is characterized with the formation of the calcium deposits in tendon, which mostly involves supraspinatus. The formation of the calcium deposits may be related to the excessive mechanical stimulation and non-tenocytes generation from tendon stem cell. The disease is usually associated with pain, especially when activating the shoulder. MATERIALS AND METHODS: We describe one case of calcifying tendinitis involving the long head of the biceps brachii and superior labrum...
February 22, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28224066/the-use-of-accessory-portals-in-bankart-repair-with-posterior-extension-in-the-lateral-decubitus-position
#7
Gregory L Cvetanovich, Jason T Hamamoto, Kevin J Campbell, Mark McCarthy, John D Higgins, Nikhil N Verma
The Bankart lesion, in which the anteroinferior labrum is detached from the glenoid, is the critical anatomic lesion in the majority of patients with anterior glenohumeral instability. Some patients with anterior glenohumeral instability will have Bankart lesions with posterior extension beyond the 6-o'clock position, and achieving anatomic labral repair in these cases can present a technical challenge. In our experience, the lateral decubitus position and use of accessory portals allow superior visualization of the inferior half of the glenohumeral joint for glenoid and labral preparation, anchor placement, and suture management...
October 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28203588/return-to-play-and-prior-performance-in-major-league-baseball-pitchers-after-repair-of-superior-labral-anterior-posterior-tears
#8
Ryan Smith, Daniel J Lombardo, Graysen R Petersen-Fitts, Charles Frank, Troy Tenbrunsel, Gannon Curtis, James Whaley, Vani J Sabesan
BACKGROUND: The published return-to-play (RTP) rates for Major League Baseball (MLB) pitchers who have undergone surgical repair of superior labrum anterior-posterior (SLAP) tears vary widely and are generally accepted to be lower in the subset of competitive throwers. The efficacy of surgical treatment for MLB players is largely unknown. PURPOSE: To examine the RTP rate and performance of MLB pitchers who have undergone SLAP tear repair between 2003 and 2010. STUDY DESIGN: Descriptive epidemiological study...
December 2016: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28197872/mr-arthrography-of-the-shoulder-evaluation-of-isotropic-3d-intermediate-weighted-fse-and-hybrid-gre-t1-weighted-sequences
#9
Giovanni Foti, Paolo Avanzi, William Mantovani, Flavia Dal Corso, Emanuele Demozzi, Claudio Zorzi, Giovanni Carbognin
PURPOSE: To compare the diagnostic accuracy of three-dimensional (3D) fast spin echo (FSE) intermediate-weighed (IW-3D) and 3D hybrid double-echo steady-state T1-weighted sequences (Hy-3D) and two-dimensional (FSE) images (2D) at shoulder MR arthrography (MRA). MATERIALS AND METHODS: Institutional review board approval was obtained and informed consent was waived for this retrospective study. From September 2011 to October 2014, 102 patients who had undergone 1...
February 15, 2017: La Radiologia Medica
https://www.readbyqxmd.com/read/28183087/development-of-the-human-biceps-brachii-tendon-and-coracoglenoid-ligament-7th-12th-week-of-development
#10
Crótida de la Cuadra-Blanco, Luis A Arráez-Aybar, Jorge A Murillo-González, Manuel E Herrera-Lara, Juan A Mérida-Velasco, José R Mérida-Velasco
The goal of this study is to clarify the development of the long head of the biceps brachii tendon (LHBT) and to verify the existence and development of the coracoglenoid ligament. Histological preparations of 22 human embryos (7-8 weeks of development) and 43 human fetuses (9-12 weeks of development) were studied bilaterally using a conventional optical microscope. The articular interzone gives rise to the LHBT, glenoid labrum, and articular capsule. During the fetal period, it was observed that in 50 cases (58%), the LHBT originated from both the glenoid labrum and the scapula, while in 36 cases (42%), it originated only from the glenoid labrum...
February 10, 2017: Cells, Tissues, Organs
https://www.readbyqxmd.com/read/28149736/arthroscopic-debridement-of-the-thrower-s-shoulder-less-is-more
#11
Paul E Caldwell, Dustin C Dyer, Sara E Pearson
The thrower's shoulder has long been a topic of debate among shoulder specialists. The tremendous forces produced during the throwing motion coupled with the compilation of the pathology encountered in the thrower's shoulder have generated a complex treatment algorithm. Simplifying management options has been challenging and recommendations continue to evolve. Treatment of injuries to the thrower's shoulder most commonly involves addressing partial articular-sided rotator cuff tears. These can be isolated or more commonly associated with tearing of the posterior superior labrum...
December 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28146397/a-prospective-randomized-study-comparing-the-interference-screw-and-suture-anchor-techniques-for-biceps-tenodesis
#12
Ji Soon Park, Sae Hoon Kim, Ho Jin Jung, Ye Hyun Lee, Joo Han Oh
BACKGROUND: Several methods are used to perform biceps tenodesis in patients with superior labrum-biceps complex (SLBC) lesions accompanied by a rotator cuff tear. However, limited clinical data are available regarding the best technique in terms of clinical and anatomic outcomes. PURPOSE: To compare the clinical and anatomic outcomes of the interference screw (IS) and suture anchor (SA) fixation techniques for biceps tenodesis performed along with arthroscopic rotator cuff repair...
February 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28127741/evaluation-of-repair-of-the-hip-labrum-under-simulated-full-weight-bearing
#13
Jason L Koh, Kavish Gupta
INTRODUCTION: Repairs of labral tears are performed for unstable tears, hip instability, and after detachment concomitant to the treatment of femoroacetabular impingement (FAI), but limited data is known about the strength of repair. This study evaluated the effect of simulated axial weight-bearing on suture anchor based repair of the acetabular labrum. METHODS: 3 cadaveric pelvises underwent creation of a 1.5 cm anterior-superior labral tear in each hip. The tears were then repaired using 2 suture anchors per hip...
January 24, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/28098497/magnetic-resonance-arthrography-results-that-indicate-surgical-treatment-for-partial-articular-sided-supraspinatus-tendon-avulsion-a-retrospective-study-in-a-tertiary-center
#14
Seok Hahn, Young Han Lee, Yong-Min Chun, Eun Hae Park, Jin-Suck Suh
Background Specific findings on magnetic resonance arthrography (MRA) that indicate the need for surgery in patients with partial articular-sided supraspinatus tendon avulsion (PASTA) are not well understood. Purpose To determine which MRA findings are characteristic of patients who undergo surgery for PASTA. Material and Methods From July 2011 to February 2014, MRA findings for patients treated for PASTA were retrospectively reviewed. The patients were divided into two groups: conservative treatment and surgical repair...
January 1, 2017: Acta Radiologica
https://www.readbyqxmd.com/read/27981665/hip-mri-prevalence-of-articular-cartilage-defects-and-labral-tears-in-asymptomatic-volunteers-a-comparison-with-a-matched-population-of-patients-with-femoroacetabular-impingement
#15
Florian Tresch, Tobias J Dietrich, Christian W A Pfirrmann, Reto Sutter
PURPOSE: To prospectively compare defects of the articular cartilage and labrum in asymptomatic volunteers and in patients with femoroacetabular impingement (FAI) matched for age and gender. MATERIALS AND METHODS: This cross-sectional study was institutional review board approved. A total of 63 asymptomatic volunteers and 63 patients with symptomatic FAI between 20 and 50 years underwent 1.5 Tesla MRI (coronal T1-weighted, coronal intermediate-weighted fat saturated, transverse oblique true fast imaging with steady-state precession [FISP], sagittal dual echo steady state [DESS] sequence)...
December 16, 2016: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/27942510/is-clinical-evaluation-alone-sufficient-for-the-diagnosis-of-a-bankart-lesion-without-the-use-of-magnetic-resonance-imaging
#16
Bryan Loh, Jason Beng Teck Lim, Andrew Hwee Chye Tan
BACKGROUND: Imaging modalities such as magnetic resonance arthrogram (MRA) offer great utility in diagnosing Bankart lesions but they are associated with a high degree of intra and interobserver variability. This study aims to evaluate the diagnostic accuracy of clinical evaluation and imaging modalities in Bankart lesions such as magnetic resonance imaging (MRI) and MRA of the shoulder. METHODS: Between February 2004 to January 2015, a retrospectively review of the surgical records at a tertiary hospital identified a total of 250 patients treated with a shoulder arthroscopy for Bankart repair...
November 2016: Annals of Translational Medicine
https://www.readbyqxmd.com/read/27923602/patient-specific-chondrolabral-contact-mechanics-in-patients-with-acetabular-dysplasia-following-treatment-with-peri-acetabular-osteotomy
#17
C L Abraham, S J Knight, C L Peters, J A Weiss, A E Anderson
OBJECTIVE: Using a validated, patient-specific finite element (FE) modeling protocol, we evaluated cartilage and labrum (i.e., chondrolabral) mechanics before and after peri-acetabular osteotomy (PAO) to provide insight into the ability of this procedure to improve mechanics in dysplastic hips. DESIGN: Five patients with acetabular dysplasia were recruited in this case-controlled, prospective study. Models, which included anatomy for bone, cartilage, and labrum, were generated from computed tomography (CT) arthrography scans acquired before and after PAO...
December 3, 2016: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/27904970/reliability-of-magnetic-resonance-imaging-versus-arthroscopy-for-the-diagnosis-and-classification-of-superior-glenoid-labrum-anterior-to-posterior-lesions
#18
Fatih Yıldız, Kerem Bilsel, Anıl Pulatkan, Gökçer Uzer, Ayşe Aralaşmak, Musa Atay
PURPOSE: The physical examination of the shoulder is usually not reliable for the true diagnosis of superior glenoid labrum anterior to posterior (SLAP) lesions. Magnetic resonance imaging (MRI) has been routinely used for the diagnosis. This prospective study investigates the radiological diagnosis of the SLAP lesions and compares accuracy of arthroscopic and MRI classifications. METHODS: One hundred thirty-two patients with positive physical examination signs using O'Brien, Yergason, resistance supination external rotation and Krank tests and MRI findings are included in the study...
February 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/27872991/shoulder-manual-muscle-resistance-test-cannot-fully-detect-muscle-weakness
#19
Takayuki Nagatomi, Tatsuo Mae, Teruyoshi Nagafuchi, Shin-Ichi Yamada, Koutatsu Nagai, Minoru Yoneda
PURPOSE: The shoulder manual resistance test is one of the common clinical assessments for patients with muscle weakness. However, there have been no studies investigating the threshold for muscle weakness. The purpose of this study was to clarify the threshold for muscle weakness in the shoulder manual muscle resistance test. METHODS: Fifty-three patients (37.9 ± 20.6 years old) with either rotator cuff tear (21 patients), superior labrum anterior-to-posterior (SLAP) lesion (7 patients), or Bankart lesion (25 patients) of one shoulder were administered three manual muscle resistance tests (abduction strength, external rotation, and belly press tests)...
November 21, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/27826700/a-systematic-review-and-meta-analysis-of-diagnostic-test-of-mra-versus-mri-for-detection-superior-labrum-anterior-to-posterior-lesions-type-ii-vii
#20
REVIEW
Alisara Arirachakaran, Manusak Boonard, Kornkit Chaijenkij, Kwanchai Pituckanotai, Akom Prommahachai, Jatupon Kongtharvonskul
OBJECTIVE: To determine the diagnostic performance of magnetic resonance arthrography (MRA) and magnetic resonance imaging (MRI) in superior labrum anterior to posterior lesions (type II-VII) of the shoulder. MATERIAL AND METHODS: PubMed and Scopus search engines, an electronic search of articles was performed from inception to February 19, 2016. Diagnostic performance of index tests was compared by the summary area under receiver operator characteristic curve (AUROC)...
February 2017: Skeletal Radiology
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