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Shoulder retroversion

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https://www.readbyqxmd.com/read/28088244/study-of-the-variability-of-scapular-inclination-and-the-glenoid-version-considerations-for-preoperative-planning-clinical-radiological-study
#1
Petr Fulin, Martin Kysilko, David Pokorny, Radek Padr, Nikola Kasprikova, Ivan Landor, Antonin Sosna
BACKGROUND: Preoperative planning with the aid of imaging methods is a principal factor in successful surgery on the shoulder. This work aims to evaluate the variability of glenoid version, spiralling twist and scapular inclination in relation to the frontal axis. Studies focusing on measuring the variability of scapular inclination in the standardised rest position are lacking in the literature. METHODS: We evaluated 104 CT scans of the shoulder. We measured the glenoid version with respect to the scapular axis at three levels...
January 14, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28071815/effect-of-glenohumeral-elevation-on-subacromial-supraspinatus-compression-risk-during-simulated-reaching
#2
Rebekah L Lawrence, Dustin M Schlangen, Katelyn A Schneider, Jonathan Schoenecker, Andrea L Senger, William C Starr, Justin L Staker, Jutta M Ellermann, Jonathan P Braman, Paula M Ludewig
Mechanical subacromial rotator cuff compression is one theoretical mechanism in the pathogenesis of rotator cuff disease. However, the relationship between shoulder kinematics and mechanical subacromial rotator cuff compression across the range of humeral elevation motion is not well understood. The purpose of this study was to investigate the effect of humeral elevation on subacromial compression risk of the supraspinatus during a simulated functional reaching task. Three-dimensional anatomical models were reconstructed from shoulder magnetic resonance images acquired from 20 subjects (10 asymptomatic, 10 symptomatic)...
January 10, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28068966/glenoid-morphology-in-light-of-anatomical-and-reverse-total-shoulder-arthroplasty-a-dissection-and-3d-ct-based-study-in-male-and-female-body-donors
#3
Sandra Mathews, Marco Burkhard, Nabil Serrano, Karl Link, Martin Häusler, Nakita Frater, Ingeborg Franke, Helena Bischofberger, Florian M Buck, Dominic Gascho, Michael Thali, Steffen Serowy, Magdalena Müller-Gerbl, Gareth Harper, Ford Qureshi, Thomas Böni, Hans-Rudolf Bloch, Oliver Ullrich, Frank-Jakobus Rühli, Elisabeth Eppler
BACKGROUND: Placement of the glenoid baseplate is of paramount importance for the outcome of anatomical and reverse total shoulder arthroplasty. However, the database around glenoid size is poor, particularly regarding small scapulae, for example, in women and smaller individuals, and is derived from different methodological approaches. In this multimodality cadaver study, we systematically examined the glenoid using morphological and 3D-CT measurements. METHODS: Measurements of the glenoid and drill hole tunnel length for superior baseplate screw placement were recorded to define size of the glenoid and the distance to the scapular notch on cadaveric specimens...
January 10, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28002370/distinct-proximal-humeral-geometry-in-chinese-population-and-clinical-relevance
#4
Qiang Zhang, Lewis L Shi, Krishna C Ravella, Jason L Koh, Shaobai Wang, Cailong Liu, Guoan Li, Jianhua Wang
BACKGROUND: Replicating humeral anatomy during shoulder arthroplasty is important for good patient outcomes. The proximal humeral geometry of the Chinese population has been rarely reported. We analyzed the geometry of the proximal part of the humerus in Chinese subjects and compared it with that of Western populations and the dimensions of available prostheses. METHODS: Eighty healthy Chinese subjects underwent computed tomography (CT)-arthrography. Three-dimensional (3D) digital humeral and glenoid models were reconstructed, and geometric parameters were measured...
December 21, 2016: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/27926680/humeral-retroversion-in-children-with-shoulder-internal-rotation-contractures-secondary-to-upper-trunk-neonatal-brachial-plexus-palsy
#5
Michael L Pearl, Michael Batech, Fabian van de Bunt
BACKGROUND: The most common sequela of neonatal brachial plexus palsy is an internal rotation contracture of the shoulder that impairs function and leads to skeletal deformation of the glenohumeral joint. Treatment options include release, transfers, and humeral osteotomy, all ultimately striving for better function through increased external rotation. Prior studies have shown that neonatal brachial plexus palsy alters humeral retroversion but with conflicting findings. We studied retroversion in children with internal rotation contractures from neonatal brachial plexus palsy to clarify its effect on version and surgical planning...
December 7, 2016: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/27915404/is-there-any-influence-of-humeral-component-retroversion-on-range-of-motion-and-clinical-outcome-in-reverse-shoulder-arthroplasty-a-clinical-study
#6
F A de Boer, P M van Kampen, P E Huijsmans
PURPOSE: Reverse shoulder arthroplasty becomes more widely used as treatment for patients with complex cuff arthropathy. Theoretically, a higher retroversion of the humeral component leads to an increase in external rotation ROM and a decrease in internal rotation ROM. There is no consensus in optimal retroversion orientation. We retrospectively describe the effect of retroversion of the humeral component. We hypothesize that 20° humeral retroversion improves postoperative ROM, strength or clinical outcome scores compared to neutral retroversion...
December 3, 2016: Musculoskeletal Surgery
https://www.readbyqxmd.com/read/27914847/the-three-dimensional-glenohumeral-subluxation-index-in-primary-osteoarthritis-of-the-shoulder
#7
Matthijs Jacxsens, Alexander Van Tongel, Heath B Henninger, Robert Z Tashjian, Lieven De Wilde
BACKGROUND: Assessment of glenohumeral subluxation is essential in preoperative planning of total shoulder arthroplasty. The purpose of this study was to evaluate a 3-dimensional (3D) glenohumeral subluxation index (GHSI) in shoulders with primary osteoarthritis (OA) and its relationship with morbid glenoid retroversion. METHODS: The 3D computed tomography reconstructions of 120 healthy shoulders and 110 shoulders with primary glenohumeral arthritis (OA group), classified according to Walch's glenoid morphology, were analyzed...
November 30, 2016: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/27858087/three-dimensional-analysis-of-the-proximal-humeral-and-glenoid-geometry-using-microscribe-3d-digitizer
#8
Wejdan H Owaydhah, Mohammad A Alobaidy, Abdulrahman S Alraddadi, Roger W Soames
PURPOSE: To understand the geometry of the proximal humerus and glenoid fossa to facilitate the design of components used in shoulder arthroplasty. The aim is to evaluate the geometry of the proximal humerus and glenoid fossa and their relationship using a MicroScribe 3D digitizer. METHODS: Scans and measurements were obtained from 20 pairs of dry proximal humeri and scapulae [10 female and 10 male cadavers: median age 81 years (range 70-94 years)] using a MicroScribe 3D digitizer and Rhinoceros software...
November 17, 2016: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/27855874/the-importance-of-glenoid-version-in-patients-with-anterior-dislocation-of-the-shoulder
#9
Ümit Aygün, Yalkın Çalik, Cengiz Işik, Hilal Şahin, Rula Şahin, Derya Öktem Aygün
BACKGROUND: Although increased retroversion of the glenoid has been shown to be an important factor in posterior instability of the shoulder, there are few studies reporting glenoid bone structure as a risk factor in anterior dislocation of the shoulder. This study aimed to compare glenoid version in patients with anterior dislocation of the shoulder and individuals in a control group with no shoulder problems before undergoing computed tomography and to assess a possible relationship between demographic characteristics and glenoid version angle...
December 2016: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/27766274/the-relationship-between-humeral-retrotorsion-and-shoulder-range-of-motion-in-baseball-players-with-an-ulnar-collateral-ligament-tear
#10
Bobby Jean S Lee, J Craig Garrison, John E Conway, Kalyssa Pollard, Subhash Aryal
BACKGROUND: Humeral retrotorsion has been investigated in relation to shoulder range of motion (ROM) in healthy baseball players. Currently, there is limited information on the osseous anatomy and development of ulnar collateral ligament (UCL) tears. PURPOSE: To determine the relationship between humeral retrotorsion and shoulder ROM in baseball players with a UCL tear. STUDY DESIGN: Cross-sectional study; Level of evidence, 3. METHODS: Fifty-four baseball players (mean age, 18...
October 2016: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/27765502/generic-targeting-guides-place-revision-glenoid-components-in-more-anatomic-version-than-traditional-techniques
#11
Ryan P Mulligan, Frederick M Azar, Thomas W Throckmorton
BACKGROUND: Glenoid component positioning in revision shoulder arthroplasty is difficult because of distorted anatomic landmarks and scarring in and around the glenoid vault. This study compared glenoid component version in revision total shoulder arthroplasty (TSA) and reverse TSA (RTSA) using traditional instrumentation vs. a generic glenoid targeting guide. METHODS: Radiographs of 50 shoulders undergoing revision arthroplasty were reviewed by an independent reviewer...
October 17, 2016: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/27720559/humeral-head-osteotomy-in-shoulder-arthroplasty-a-comparison-between-anterosuperior-and-inferoanterior-resection-techniques
#12
Thomas Suter, Christopher W Kolz, Robert Z Tashjian, Heath B Henninger, Ariane Gerber Popp
BACKGROUND: The best chance that a shoulder arthroplasty will restore motion and muscle balance across the glenohumeral joint is by closely replicating natural articular morphology. Defining the humeral osteotomy plane along clear landmarks at the anatomic neck is critical. We hypothesized that a new osteotomy, based on alternative landmarks on the anatomic neck, would restore 3-dimensional humeral head morphology more reliably than the traditional osteotomy. METHODS: The anatomic neck was digitized in 30 human cadaver shoulders and compared with its 3-dimensional computed tomography reconstruction...
October 6, 2016: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/27717527/association-of-traumatic-and-atraumatic-posterior-shoulder-instability-with-glenoid-retroversion-and-outcomes-after-arthroscopic-capsulolabral-repair
#13
J Christoph Katthagen, Dimitri S Tahal, Scott R Montgomery, Marilee P Horan, Peter J Millett
PURPOSE: To compare glenoid retroversion and functional outcomes between patients with traumatic onset of posterior shoulder instability (PSI) and patients with atraumatic onset of PSI. METHODS: Patients with PSI who underwent arthroscopic posterior capsulolabral anchor repair, were active in sports, and had undergone surgery a minimum of 2 years earlier were included. Traumatic onset was defined as PSI that occurred after a trauma with the shoulder in adduction, flexion, and internal rotation in patients with no history of instability...
October 4, 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/27676842/safety-and-effectiveness-of-early-intramuscular-botulinum-toxin-injections-to-prevent-shoulder-deformity-in-babies-with-obstetrical-brachial-plexus-palsy-presentation-of-a-multicentre-randomised-double-blind-placebo-controlled-trial
#14
Christelle Pons, Dinomais Mickael, Franck Fitoussi, Marie-Charlotte D'Anjou, Mélanie Porte, Emilie Rumilly, Nathaly Quintero, Philippe Violas, Sylvain Brochard
OBJECTIVE: In children with obstetrical brachial plexus palsy (OBPP), shoulder musculoskeletal deformity is the main cause of morbidity, with a loss of range of shoulder motion, pain and a reduction in social participation. Some uncontrolled studies show that early injections of botulinum toxin (BTI) in the internal shoulder rotator muscles (which cause the deformity) are one of the most promising treatments for the prevention of bony deformity. The main objective of this study will be the evaluation of the effectiveness of BTI in the internal shoulder rotator muscles at the age of 6 months in preventing an increase in posterior subluxation of the glenohumeral joint in babies with OBPP (evaluated at the ages of 5 and 12 months), compared with a placebo...
September 2016: Annals of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/27599823/comparison-of-glenoid-version-and-posterior-humeral-subluxation-in-patients-with-and-without-posterior-shoulder-instability
#15
Stephen A Parada, Josef K Eichinger, Guillaume D Dumont, Lauren E Burton, Maggie S Coats-Thomas, Stephen D Daniels, Nathan J Sinz, Matthew T Provencher, Laurence D Higgins, Jon J P Warner
PURPOSE: To evaluate glenoid version and humeral subluxation on preoperative multiplanar imaging of patients who underwent surgery for posterior glenohumeral instability compared with a matched group of patients who had shoulder surgery for other pathology. METHODS: All patients over a 2-year period who underwent surgery for posterior instability had preoperative magnetic resonance (MR) imaging or MR arthrogram reviewed. Patients undergoing shoulder surgery for reasons other than instability were identified as a control group and matched by sex, laterality, and age...
September 3, 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/27592372/radiographic-characterization-of-the-b2-glenoid-the-effect-of-computed-tomographic-axis-orientation
#16
Peter N Chalmers, Dane Salazar, Aaron Chamberlain, Jay D Keener
BACKGROUND: Glenoid retroversion may accelerate glenoid loosening after total shoulder arthroplasty. Accurate measurement of preoperative glenoid deformity is critical for decision-making and prognostication. The purpose of this study was to determine whether glenoid version, inclination, and depth and humeral subluxation measurements on computed tomography (CT) scan slices oriented in the plane of the body differ from those oriented in the scapular plane and those obtained by automated 3-dimensional reconstruction software in the setting of a biconcave B2-type glenoid...
August 31, 2016: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/27587844/relationship-between-humeral-retroversion-and-length-of-baseball-career-before-the-age-of-16-years
#17
Chihiro Nakase, Teruhisa Mihata, Yasuo Itami, Atsushi Takeda, Masashi Neo
BACKGROUND: Humeral retroversion physiologically decreases during growth. However, in throwing athletes, the external forces caused by repetitive throwing are thought to increase humeral retroversion on the dominant side compared with that on the nondominant side. PURPOSE: To investigate the correlation between humeral retroversion and length of baseball career before age 16 years. STUDY DESIGN: Cross-sectional study; Level of evidence, 3...
September 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27576109/anatomic-study-of-coracoclavicular-ligaments-for-reconstruction-of-acromioclavicular-joint-dislocations
#18
Nai-Feng Zhu, Bi-Yu Rui, Yun-Long Zhang, Yun-Feng Chen
BACKGROUND: There has been a trend to reconstruct the coracoclavicular (CC) ligaments anatomically for management of acromioclavicular (AC) joint dislocations. PURPOSE: The aim of this study was to determine the location and orientation of the CC ligaments for anatomic reconstruction of the AC joint. METHODS: The subjects were a total of 40 shoulders from 20 Chinese cadavers. Two K-wires were drilled through the insertion center of the conoid and trapezoid ligaments respectively...
November 2016: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/27528612/critical-findings-on-magnetic-resonance-arthrograms-in-posterior-shoulder-instability-compared-with-an-age-matched-controlled-cohort
#19
Joseph W Galvin, Stephen A Parada, Xinning Li, Josef K Eichinger
BACKGROUND: Posterior shoulder instability is less common and potentially more difficult to diagnose clinically and radiographically compared with anterior shoulder instability. Radiographic findings including posterior labral tears, increased retroversion, presence of glenoid dysplasia, and increased capsular area are associated with symptomatic recurrent posterior shoulder instability. PURPOSE: This study aimed to determine the prevalence and severity of associated radiographic parameters found on magnetic resonance arthrograms (MRAs) in patients with arthroscopically confirmed isolated posterior labral tears and symptomatic recurrent posterior shoulder instability, compared with an age-matched cohort of patients without posterior instability or labral injury confirmed with shoulder arthroscopy...
December 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27496904/biomechanical-evaluation-of-glenoid-version-and-dislocation-direction-on-the-influence-of-anterior-shoulder-instability-and-development-of-hill-sachs-lesions
#20
Josef K Eichinger, Daniel F Massimini, Jungryul Kim, Laurence D Higgins
BACKGROUND: Abnormal glenoid version is a risk factor for shoulder instability. However, the degree to which the variance in version (both anteversion and retroversion) affects one's predisposition for instability is not well understood. PURPOSE: To determine the influence of glenoid version on anterior shoulder joint stability and to determine if the direction of the humeral head dislocation is a stimulus for the development of Hill-Sachs lesions. STUDY DESIGN: Controlled laboratory study...
August 5, 2016: American Journal of Sports Medicine
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