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https://www.readbyqxmd.com/read/28932486/-on-track-and-off-track-shoulder-lesions
#1
REVIEW
E Itoi
Shoulder stability depends on the position of the arm as well as activities of the muscles around the shoulder. The capsulo-ligamentous structures are the main stabilisers with the arm at the end-range of movement, whereas negative intra-articular pressure and concavity-compression effect are the main stabilisers with the arm in the mid-range of movement.There are two types of glenoid bone loss: fragment type and erosion type. A bone loss of the humeral head, known as a Hill-Sachs lesion (HSL), is a compression fracture of the humeral head caused by the anterior rim of the glenoid when the humeral head is dislocated anteriorly in front of the glenoid...
August 2017: EFORT open reviews
https://www.readbyqxmd.com/read/28932284/acromial-j-bone-graft-on-the-acromion-for-surgical-treatment-of-glenohumeral-instability-an-anatomical-study
#2
Matthieu Sanchez, Shahnaz Klouche, Bruno Faivre, Thomas Bauer, Philippe Hardy
BACKGROUND: Anterior glenohumeral instability is frequently associated with anteroinferior glenoid bone defects. One original technique has been described in the literature that incorporates a J-shaped graft from the iliac crest into the anterior glenoid rim. The main goal of the present study was to evaluate the feasibility of harvesting a J-shaped graft from the acromion that corresponds to previously described dimensions. The secondary goal was to determine the ideal harvesting site...
October 2017: Shoulder & Elbow
https://www.readbyqxmd.com/read/28927670/patient-specific-instrumentation-for-total-shoulder-arthroplasty-not-as-accurate-as-it-would-seem
#3
Simon C Lau, Prue P A Keith
BACKGROUND: There is an increasing body of literature suggesting that the use of patient-specific instrumentation (PSI) in total shoulder arthroplasty (TSA) results in improved positioning of the glenoid component. The aim of this in vivo study was to assess the accuracy of PSI of the glenoid component in TSA in a consecutive series at a single center. METHODS: Eleven consecutive TSAs (7 TSAs and 4 reverse TSAs) were performed using custom-made patient-specific positioning guides for the glenoid component...
September 15, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28920546/blood-supply-and-vascularity-of-the-glenoid-labrum-its-clinical-implications
#4
Abduelmenem Alashkham, Abdulrahman Alraddadi, Paul Felts, Roger Soames
BACKGROUND: Tears of the glenoid labrum are common after dislocation of the glenohumeral joint. The outcome for healing or surgical reconstruction of the glenoid labrum relies on the extent of its vascularization. This study aims to evaluate the glenoid labrum blood supply and to determine its regional vascularity. MATERIALS AND METHODS: A total of 140 shoulders (30 male and 40 female cadavers) were examined: mean age 81.5 years, range 53-101 years. All blood vessels around the glenohumeral joint were dissected and recorded...
September 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28918112/radiographic-and-clinical-comparison-of-pegged-and-keeled-glenoid-components-using-modern-cementing-techniques-midterm-results-of-a-prospective-randomized-study
#5
Christopher M Kilian, Cyrus M Press, Kevin M Smith, Daniel P O'Connor, Brent J Morris, Hussein A Elkousy, Gary M Gartsman, T Bradley Edwards
BACKGROUND: Glenoid component loosening remains a significant issue after anatomic shoulder arthroplasty. Pegged glenoid components have shown better lucency rates than keeled components in the short term; however, midterm to long-term results have not fully been determined. We previously reported early outcomes of the current randomized controlled group of patients, with higher glenoid lucency rates in those with a keeled glenoid. The purpose of this study was to evaluate the radiographic and clinical outcomes of these components at minimum 5-year follow-up...
September 13, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28916911/evaluation-of-thirty-eight-cemented-pegged-glenoid-components-with-variable-backside-curvature-two-year-minimum-follow-up
#6
Florence Dauzère, Marine Arboucalot, Julie Lebon, Fanny Elia, Nicolas Bonnevialle, Pierre Mansat
BACKGROUND: The PERFORM™ pegged glenoid system has been used for shoulder arthroplasty since 2012. This system offers multiple backside curvatures per size to better match variable patient anatomy. As a result, less reaming is required and subchondral bone is preserved-a critical factor in preventing glenoid migration and loosening, thus enhancing implant longevity. PURPOSE: The purpose of this study was to analyze all radiographic modifications around this new glenoid implant...
September 15, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28904952/internal-impingement-of-the-shoulder-a-risk-of-false-positive-test-outcomes-in-external-impingement-tests
#7
Tim Leschinger, Christopher Wallraff, Dirk Müller, Matthias Hackenbroch, Henning Bovenschulte, Jan Siewe
BACKGROUND: External impingement tests are considered as being particularly reliable for identifying subacromial and coracoid shoulder impingement mechanisms. The purpose of the present study was to evaluate if these tests are likely to provoke an internal shoulder impingement mechanism which, in cases of a pathologic condition, can lead to a positive test result. METHOD: In 37 subjects, the mechanical contact between the glenoid rim and the rotator cuff (RC) was measured quantitatively and qualitatively in external impingement test positions using an open MRI system...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28898448/neutral-glenoid-alignment-in-reverse-shoulder-arthroplasty-does-not-guarantee-decreased-risk-of-impingement
#8
Julien Berhouet, Lawrence Gulotta, Xiang Chen, David Dines, Russel Warren, Andreas Kontaxis
Reverse Shoulder Arthroplasty (RSA) has gained popularity over the recent years, but impingement concerns are still present. Surgeons aim to correct pre-operative glenoid deformities to reduce impingement but it can be challenging without assistance like patient specific guides. However, it is unclear how accurate glenoid correction affects the impingement. The main objective of this study was to determine whether accurate glenoid correction to neutral version and tilt can reduce the risk of impingement. Two types of virtual surgeries were performed on 22 pre-operative arthritic shoulders: i)'Interactive', the glenoid baseplate could be placed with accuracy, and ii)'Blind', surgeons placed the RSA baseplate while they could only visualize the glenoid...
September 12, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28894931/radiographic-evaluation-of-condylar-positioning-in-patients-undergoing-orthognathic-surgery
#9
Wanderley da Silva Félix Junior, Leandro Eduardo Klüppel, Delson João da Costa, Ângela Fernandes, Rafaela Scariot, Nelson Luis Barbosa Rebellato
OBJECTIVE: The aim of this study was to evaluate alterations in condylar positioning through submentovertex projection (Hirtz Radiographic Technique) in patients who underwent orthognathic surgery for maxillary advancement and mandibular setback with stable internal fixation. METHODS: A prospective longitudinal clinical study of 40 surgical patients presenting dentofacial deformity admitted in the Oral and Maxillofacial Surgery Department of Federal University of Paraná (UFPR) in the period between March 2013 and December 2015...
September 12, 2017: Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28894758/the-latarjet-procedure-at-the-national-football-league-scouting-combine-an-imaging-and-performance-analysis
#10
George F LeBus, Jorge Chahla, George Sanchez, Ramesses Akamefula, Gilbert Moatshe, Alexandra Phocas, Mark D Price, James M Whalen, Robert F LaPrade, Matthew T Provencher
BACKGROUND: The Latarjet procedure is commonly performed in the setting of glenoid bone loss for treatment of recurrent anterior shoulder instability; however, little is known regarding the outcomes of this procedure in elite American football players. PURPOSE: (1) Determine the prevalence, clinical features, and imaging findings of elite college football athletes who present to the National Football League (NFL) Combine with a previous Latarjet procedure and (2) describe these athletes' performance in the NFL in terms of draft status and initial playing time...
September 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28893848/a-review-of-10-years-of-scapula-injuries-sustained-by-uk-military-personnel-on-operations
#11
Darren C Roberts, D M Power, S A Stapley
BACKGROUND: Scapula fractures are relatively uncommon injuries, mostly occurring due to the effects of high-energy trauma. Rates of scapula fractures are unknown in the military setting. The aim of this study is to analyse the incidence, aetiology, associated injuries, treatment and complications of these fractures occurring in deployed military personnel. METHODS: All UK military personnel returning with upper limb injuries from Afghanistan and Iraq were retrospectively reviewed using the Royal Centre for Defence Medicine database and case notes (2004-2014)...
September 11, 2017: Journal of the Royal Army Medical Corps
https://www.readbyqxmd.com/read/28893394/biceps-tenotomy-in-the-presence-of-a-supraspinatus-tear-alters-the-adjacent-intact-tendons-and-glenoid-cartilage
#12
Zakary M Beach, Jennica J Tucker, Stephen J Thomas, Katherine E Reuther, Chancellor F Gray, Chang-Soo Lee, David L Glaser, Louis J Soslowsky
A rotator cuff tear is a common injury in athletes and workers who repeatedly perform overhead movements, and it is not uncommon for this demographic to return to activity shortly after treatment. A biceps tenotomy is often performed in the presence of a rotator cuff tear to help reduce pain and improve joint function. However, the effect of this procedure on the surrounding tissues in the glenohumeral joint is unknown. Therefore, the purpose of this study was to investigate the effect of a biceps tenotomy in the presence of a supraspinatus rotator cuff tear followed by overuse activity on ambulatory function and mechanical and histologic properties of the remaining rotator cuff tendons and glenoid cartilage...
August 26, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28875360/-recurrent-instability-and-instability-arthropathy
#13
REVIEW
L Lacheta, S Siebenlist, A B Imhoff, L Willinger
Capsulolabral reconstruction (Bankart repair) is recommended as the first line treatment in young and functionally demanding active patients with anteroinferior shoulder instability, due to the high tendency to recurrent dislocation. This has become established both for arthroscopic and open primary shoulder stabilization with good clinical outcome; nevertheless, recurrence of dislocation is reported in up to 25% of patients. Risk factors for failed surgery are patient (e.g. young age, male gender and contact sports) and surgery (e...
September 5, 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/28873346/painful-posterior-shoulder-instability-anticipating-and-preventing-failure-a-study-in-25-patients
#14
Jerome Garret, Geoffroy Nourissat, Marie Béatrice Hardy, Diego Antonucci, Philippe Clavert, Pierre Mansat, Arnaud Godenèche
BACKGROUND: Painful posterior shoulder instability (PPSI) is the least common of the three clinical patterns of posterior shoulder instability. PPSI is defined as pain combined with anatomical evidence of posterior instability but no instability events. MATERIAL AND METHOD: We studied a multicentre cohort of 25 patients with PPSI; 23 were identified retrospectively and had a follow-up of at least 2 years and 2 patients were included prospectively. Most patients engaged in sports...
September 2, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28872528/quantitative-measurement-of-osseous-pathology-in-advanced-glenohumeral-osteoarthritis
#15
Joseph P Iannotti, Bong-Jae Jun, Thomas E Patterson, Eric T Ricchetti
BACKGROUND: Osteoarthritis of the glenohumeral joint has typical patterns of deformity as described by Walch et al. However, more severe glenoid pathology may be difficult to classify. The purpose of this study was to use 3-dimensional computed tomography (3-D CT) imaging analysis to define common pathologic subtypes that can be differentiated from the current Walch classification. METHODS: We performed quantitative measurements of premorbid and pathologic anatomy using preoperative 3-D CT scans from 155 cases of advanced glenohumeral osteoarthritis that underwent anatomic or reverse total shoulder arthroplasty...
September 6, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28868086/subacromial-spacer-implantation-for-massive-rotator-cuff-tears-clinical-outcome-of-arthroscopically-treated-patients
#16
Malte Holschen, Florian Brand, Jens D Agneskirchner
BACKGROUND: Massive rotator cuff tears (MRCT) can be treated arthroscopically by partial reconstruction, tenotomy/tenodesis of the long head of the biceps, and debridement. A new treatment option is the additional implantation of a biodegradable spacer (InSpace Balloon®; ISB) into the subacromial space, which reduces subacromial shear forces to keep the humeral head centered in the glenoid. The aim of this study is to investigate the clinical outcome of patients with MRCT who were treated arthroscopically with or without an additional ISB...
2017: Obere Extremität
https://www.readbyqxmd.com/read/28866848/corr-insights-%C3%A2-does-postoperative-glenoid-retroversion-affect-the-2-year-clinical-and-radiographic-outcomes-for-total-shoulder-arthroplasty
#17
Michael Lawrence Pearl
No abstract text is available yet for this article.
September 2, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28865570/editorial-commentary-whatever-you-do-anatomic-restoration-of-the-biconcave-glenoid-morphometry-for-bone-defects-in-patients-with-anterior-shoulder-instability-is-nearly-impossible
#18
EDITORIAL
Erik Hohmann
There are many bone block procedures described to treat glenoid bone defects in anterior shoulder instability and most of these techniques apparently result in anatomic reconstruction. However, anatomic restoration of the biconcave glenoid morphometry for bone defects in patients with anterior shoulder instability is nearly impossible.
September 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28862492/three-dimensional-positional-assessment-of-glenoid-fossae-and-mandibular-condyles-in-patients-with-class-ii-subdivision-malocclusion
#19
Juliana Macêdo de Mattos, Juan Martin Palomo, Antonio Carlos de Oliveira Ruellas, Paula Loureiro Cheib, Manhal Eliliwi, Bernardo Quiroga Souki
OBJECTIVES: To test the null hypotheses that the positions of the glenoid fossae and mandibular condyles are identical on the Class I and Class II sides of patients with Class II subdivision malocclusion. MATERIALS AND METHODS: Retrospective three-dimensional (3D) assessments of the positions of the glenoid fossae and mandibular condyles were made in patients with Class II malocclusion. Relative to a fiducial reference at the anterior cranial base, distances from the glenoid fossae and condyles were calculated in pretreatment cone beam computed tomographic scans of 82 patients: 41 with Class II and 41 with Class II subdivision malocclusions...
September 1, 2017: Angle Orthodontist
https://www.readbyqxmd.com/read/28861389/cone-beam-computed-tomographic-evaluation-of-the-temporomandibular-joint-and-dental-characteristics-of-patients-with-class-ii-subdivision-malocclusion-and-asymmetry
#20
Mingna Huang, Yun Hu, Jinfeng Yu, Jicheng Sun, Ye Ming, Leilei Zheng
OBJECTIVE: Treating Class II subdivision malocclusion with asymmetry has been a challenge for orthodontists because of the complicated characteristics of asymmetry. This study aimed to explore the characteristics of dental and skeletal asymmetry in Class II subdivision malocclusion, and to assess the relationship between the condyle-glenoid fossa and first molar. METHODS: Cone-beam computed tomographic images of 32 patients with Class II subdivision malocclusion were three-dimensionally reconstructed using the Mimics software...
September 2017: Korean Journal of Orthodontics
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