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https://www.readbyqxmd.com/read/28706848/bipolar-bone-loss-of-the-shoulder-joint-due-to-recurrent-instability-use-of-fresh-osteochondral-distal-tibia-and-humeral-head-allografts
#1
Daniel B Haber, Anthony Sanchez, George Sanchez, Marcio B Ferrari, Sami Ferdousian, Matthew T Provencher
With increasing shoulder instability events, the likelihood of a bony lesion of the glenoid and/or humeral head rises. Although bone loss of either the glenoid or humeral head may result in recurrent instability, bipolar lesions have been shown, in particular, to result in a negative and additive effect on glenohumeral stability. In the case of a bipolar lesion comprising severe glenoid bone loss and an engaging, "off-track" Hill-Sachs lesion, the bony foundation of the glenohumeral joint is compromised and bony augmentation is necessary...
June 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28706826/arthroscopic-panlabral-repair-with-remplissage-of-hill-sachs-lesion
#2
Colten Luedke, John M Tokish
Recurrent shoulder instability in young contact athletes has been well established. The importance of bipolar bone loss in instability has come to the forefront in terms of proper management of this condition. It remains controversial, however, which patients would be better served with an arthroscopic versus open procedure and when additional procedures may reduce the risk of failure (i.e., remplissage). We present our arthroscopic technique of a panlabral repair with concomitant remplissage using the double-pulley technique...
June 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28706818/arthroscopic-repair-of-posterior-bony-bankart-lesion-and-subscapularis-remplissage
#3
Colten Luedke, Stefan J Tolan, John M Tokish
Posterior shoulder instability with glenoid bone loss has only a fraction of the prevalence of anterior instability. Unlike the latter, there is a paucity of literature regarding the treatment of posterior bony Bankart lesions and even less with concomitant reverse Hill-Sachs lesions. This combination of pathology leads to a difficult situation regarding treatment options. We present our technique for arthroscopic repair of a posterior bony Bankart lesion and reverse Hill-Sachs lesion. The importance of proper portal placement cannot be overstated...
June 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28697084/posterior-fracture-dislocation-of-the-shoulder-a-modified-mclaughlin-procedure
#4
Sanjit R Konda, Nina Fisher, Mark Gage, Kenneth A Egol
PURPOSE: Bilateral posterior fracture dislocation is a rare injury commonly associated with seizures. When the humeral head defect (reverse Hill-Sachs lesion) is between 20% and 45%, operative fixation using a modified McLaughlin procedure is recommended. This video demonstrates a case of bilateral posterior fracture dislocation after a drug-induced seizure treated with a modified McLaughlin procedure. METHODS: The original McLaughlin procedure involved transfer of the subscapularis tendon from the lesser tuberosity to the reverse Hill-Sachs defect...
August 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28658583/risk-of-engagement-of-bipolar-bone-defects-in-posterior-shoulder-instability
#5
Philipp Moroder, Fabian Plachel, Mark Tauber, Peter Habermeyer, Andreas Imhoff, Dennis Liem, Helmut Lill, Herbert Resch, Christian Gerhardt, Markus Scheibel
BACKGROUND: The risk of re-engagement of bipolar bone defects in posterior shoulder instability has not yet been investigated. HYPOTHESIS: Posterior glenoid defects can lead to the engagement of supposedly noncritical reverse Hill-Sachs lesions (RHSLs). STUDY DESIGN: Descriptive laboratory study. METHODS: In a retrospective multicenter study, 102 cases of posterior shoulder dislocations and resulting RHSLs were collected...
June 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28624240/bipolar-bone-loss-in-patients-with-anterior-shoulder-dislocation-a-comparison-of-adolescents-versus-adult-patients
#6
Brian C Lau, Devin Conway, Patrick F Curran, Brian T Feeley, Nirav K Pandya
PURPOSE: To compare bipolar bone loss by evaluating the degree of glenoid bone loss, Hill-Sachs lesion size, and glenoid track in adolescents and adults with shoulder dislocations. METHODS: We performed a retrospective review between 2012 and 2016 of surgical and nonsurgical patients with a history of anterior shoulder dislocations (primary or recurrent) who underwent magnetic resonance imaging of the affected shoulder. The exclusion criteria included multidirectional instability, prior surgery, and posterior dislocation...
June 14, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28607788/a-case-of-fracture-redislocation-of-the-hip-caused-by-a-depressed-fracture-of-the-femoral-head-similar-to-a-hill-sachs-lesion
#7
Yoshihiko Okudera, Hiroaki Kijima, Shin Yamada, Natsuo Konishi, Hitoshi Kubota, Hiroshi Tazawa, Takayuki Tani, Norio Suzuki, Keiji Kamo, Ken Sasaki, Tetsuya Kawano, Yosuke Iwamoto, Naohisa Miyakoshi, Yoichi Shimada
The present case shows a case of fracture-redislocation of the hip caused by a depressed fracture of the femoral head similar to a Hill-Sachs lesion. A 59-year-old man fell from a roof and his left hip joint was dislocated posteriorly. He was admitted to a nearby hospital, and he was referred to our hospital more than 24 hours after injury. Computed tomography (CT) suggested a bone chip from the posterior wall of the acetabulum roof and a depressed femoral head that cut into the posterior margin of the acetabulum roof...
2017: Case Reports in Orthopedics
https://www.readbyqxmd.com/read/28588656/measurement-of-combined-glenoid-and-hill-sachs-lesions-in-anterior-shoulder-instability
#8
Dominique M Rouleau, Laurianne Garant-Saine, Fanny Canet, Emilie Sandman, Jérémie Ménard, Julien Clément
BACKGROUND: Recurrent glenohumeral anterior instability (RGAI) frequently induces combined glenoid and Hill-Sachs bone lesions and is a risk factor for soft tissue repair failure. This cohort study describes a simple preoperative quantification method for bone loss, the Clock method, the first that combines glenoid and humeral lesions. METHODS: Computed tomography scans of 34 shoulders with RGAI were twice reviewed by three independent observers, who measured bone lesions using the new Clock method and existing validated methods...
July 2017: Shoulder & Elbow
https://www.readbyqxmd.com/read/28553421/irreducible-anterior-shoulder-dislocation-with-interposition-of-the-long-head-of-the-biceps-and-greater-tuberosity-fracture-a-case-report-and-review-of-the-literature
#9
Konstantinos Pantazis, Andreas Panagopoulos, Irini Tatani, Basilis Daskalopoulos, Ilias Iliopoulos, Minos Tyllianakis
BACKGROUND: Failure of closed manipulative reduction of an acute anterior shoulder dislocation is seldom reported in the literature and is usually due to structural blocks such as soft tissue entrapment (biceps, subscapularis, labrum), bony fragments (glenoid, greater tuberosity) and severe head impaction (Hill-Sachs lesion). CASE REPORT: We present a case of an irreducible anterior shoulder dislocation in a 57-year-old male patient after a road-traffic accident...
2017: Open Orthopaedics Journal
https://www.readbyqxmd.com/read/28535188/molecular-heterogeneity-at-the-network-level-high-dimensional-testing-clustering-and-a-tcga-case-study
#10
Nicolas Städler, Frank Dondelinger, Steven M Hill, Rehan Akbani, Yiling Lu, Gordon B Mills, Sach Mukherjee
Motivation: Molecular pathways and networks play a key role in basic and disease biology. An emerging notion is that networks encoding patterns of molecular interplay may themselves differ between contexts, such as cell type, tissue or disease (sub)type. However, while statistical testing of differences in mean expression levels has been extensively studied, testing of network differences remains challenging. Furthermore, since network differences could provide important and biologically interpretable information to identify molecular subgroups, there is a need to consider the unsupervised task of learning subgroups and networks that define them...
May 23, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28507972/bilateral-coracoid-avulsion-fractures-with-unilateral-anterior-instability-with-glenoid-bone-loss-use-of-avulsed-fragment-for-reconstruction-of-glenoid
#11
Prateek Kumar Gupta, Ashis Acharya, Amit Mourya
INTRODUCTION: Coracoid fractures are often missed since the fracture is not visualized in a routine anteroposterior view of the shoulder and special views are not ordered. Shoulder dislocation is common but it is rare to have a dislocation with a coracoid fracture. The purpose of this paper is to present the rare occurrence of bilateral coracoid fractures in a patient with unilateral anterior shoulder instability managed using the same fractured coracoid fragment by the latarjet procedure...
November 2016: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28497167/results-of-arthroscopic-bankart-repair-with-hill-sachs-remplissage-for-anterior-shoulder-instability
#12
Nicolas Bonnevialle, Vadim Azoulay, Amélie Faraud, Fanny Elia, Pascal Swider, Pierre Mansat
PURPOSE: The aim of this study was to evaluate mid-term outcomes of Bankart repair with Hill-Sachs remplissage (BHSR) and to highlight prognostic factors of failure. METHODS: Thirty-four patients operated on for anterior shoulder instability with BHSR were enrolled in a prospective non-randomised study. Clinical and radiographic evaluation was performed at 1.5, three, six months and yearly thereafter. Outcome measures included Rowe and Walch-Duplay score. RESULTS: At mean follow-up of 35 months (24-63), the Rowe and Walch-Duplay scores reached respectively 92...
May 11, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28478901/three-dimensional-quantitative-analysis-of-humeral-head-and-glenoid-bone-defects-with-recurrent-glenohumeral-instability
#13
Noboru Matsumura, Satoshi Oki, Masateru Kitashiro, Mayu Minemoto, Takeru Ichikawa, Morio Matsumoto, Masaya Nakamura, Takeo Nagura
BACKGROUND: Although bone defects of the humeral head and glenoid could affect glenohumeral instability, bone loss has not been sufficiently evaluated. The purpose of this study was to quantify bone defects 3-dimensionally in cases with glenohumeral instability. METHODS: Three-dimensional surface models of bilateral proximal humeri and glenoids were reconstructed from computed tomography scans of 90 patients with symptomatic, unilateral, recurrent glenohumeral instability...
May 3, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28474965/the-effect-of-subcritical-bone-loss-and-exposure-on-recurrent-instability-after-arthroscopic-bankart-repair-in-intercollegiate-american-football
#14
Jonathan F Dickens, Brett D Owens, Kenneth L Cameron, Thomas M DeBerardino, Brendan D Masini, Karen Y Peck, Steven J Svoboda
BACKGROUND: There is no consensus on the optimal method of stabilization (arthroscopic or open) in collision athletes with anterior shoulder instability. PURPOSE: To examine the effect of "subcritical" bone loss and football-specific exposure on the rate of recurrent shoulder instability after arthroscopic stabilization in an intercollegiate American football population. STUDY DESIGN: Case-control study; Level of evidence, 3. METHODS: Fifty intercollegiate football players underwent primary arthroscopic stabilization for anterior shoulder instability and returned to football for at least a single season...
July 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28451607/outcomes-after-arthroscopic-bankart-repair-in-adolescent-athletes-participating-in-collision-and-contact-sports
#15
Michael G Saper, Charles Milchteim, Robert L Zondervan, James R Andrews, Roger V Ostrander
BACKGROUND: Literature on arthroscopic stabilization in adolescent patients participating in collision and contact sports is limited, as most studies include adolescents within a larger sample group comprised primarily of adults. PURPOSE: To review the outcomes of arthroscopic Bankart repair for anterior shoulder instability in an adolescent population participating in collision and contact sports. STUDY DESIGN: Case series; Level of evidence, 4...
March 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28441305/step-by-step-technique-for-segmental-reconstruction-of-reverse-hill-sachs-lesions-using-homologous-osteochondral-allograft
#16
Hassanin Alkaduhimi, Michel P J van den Bekerom, Derek F P van Deurzen
Posterior shoulder dislocations are accompanied by high forces and can result in an anteromedial humeral head impression fracture called a reverse Hill-Sachs lesion. This reverse Hill-Sachs lesion can result in serious complications including posttraumatic osteoarthritis, posterior dislocations, osteonecrosis, persistent joint stiffness, and loss of shoulder function. Treatment is challenging and depends on the amount of bone loss. Several techniques have been reported to describe the surgical treatment of lesions larger than 20%...
June 2017: Techniques in Hand & Upper Extremity Surgery
https://www.readbyqxmd.com/read/28409110/anatomic-humeral-head-reconstruction-with-fresh-osteochondral-talus-allograft-for-recurrent-glenohumeral-instability-with-reverse-hill-sachs-lesion
#17
Matthew T Provencher, George Sanchez, Katrina Schantz, Marcio Ferrari, Anthony Sanchez, Salvatore Frangiamore, Sandeep Mannava
The treatment of recurrent glenohumeral instability, especially with a concomitant bony lesion, remains challenging. This is especially true in the case of posterior instability given its less common incidence. Moreover, the presence of an engaging reverse Hill-Sachs lesion in combination with posterior instability will result in the need for a more aggressive treatment option. In comparison with a Hill-Sachs lesion, a reverse Hill-Sachs lesion features greater chondral deficiency that must be addressed during treatment...
February 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28402759/medial-posterior-capsular-plication-reduces-anterior-shoulder-instability-similar-to-remplissage-without-restricting-motion-in-the-setting-of-an-engaging-hill-sachs-defect
#18
Brian C Werner, Xiang Chen, Christopher L Camp, Andreas Kontaxis, Joshua S Dines, Lawrence V Gulotta
BACKGROUND: Numerous surgical options for the management of engaging Hill-Sachs lesions exist, of which remplissage has emerged as one of the most popular arthroscopic techniques. Remplissage is not without disadvantages, however, and has been demonstrated to potentially result in a loss of external rotation (ER) due to nonanatomic tethering of the infraspinatus tendon and a potential decrease in infraspinatus strength clinically. PURPOSE: The efficacy of posterior medial capsular plication in addition to Bankart repair was examined as an arthroscopic management strategy for an engaging Hill-Sachs defect...
April 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28400880/arthroscopic-findings-in-anterior-shoulder-instability
#19
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/28295125/treatment-of-locked-posterior-shoulder-dislocation-with-bone-defect
#20
Yousuf M Khira, Adel M Salama
Locked posterior shoulder dislocation is an uncommon condition and is associated with a reverse Hill-Sachs lesion in 50% of cases. The condition is likely to occur in cases of violent trauma, seizures, or electric shock. Unrecognized dislocation with humeral head fracture affects joint function and humeral head vascularity and may lead to chronic instability, osteonecrosis, and osteoarthritis. A group of 12 patients, including 10 men and 2 women, with neglected locked posterior shoulder dislocation with a reverse Hill-Sachs lesion were treated with the modified McLaughlin technique...
May 1, 2017: Orthopedics
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