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Shoulder anatomy

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https://www.readbyqxmd.com/read/29453500/isolated-greater-tuberosity-fractures-of-the-proximal-humerus-anatomy-injury-patterns-multimodality-imaging-and-approach-to-management
#1
Eric A White, Matthew R Skalski, Dakshesh B Patel, Jordan S Gross, Anderanik Tomasian, Nathanael Heckmann, George R Matcuk
The greater tuberosity is an important anatomic structure and its integrity is important for shoulder abduction and external rotation. Isolated fractures of the greater tuberosity are often subtle and may not be detected on initial radiographs. Clinically, these patients display symptoms which mimic a full thickness rotator cuff tear. It is important to differentiate these two entities, as their treatment is different (typically nonsurgical management for minimally displaced fractures versus rotator cuff repair for acute full thickness rotator cuff tears)...
February 16, 2018: Emergency Radiology
https://www.readbyqxmd.com/read/29444578/-anatomy-of-fractures-of-the-inferior-scapular-angle
#2
J Bartoníček, M Tuček, J Malík
INTRODUCTION: The aim of this study is to describe the anatomy of fractures of the inferior angle and the adjacent part of the scapular body, based on 3D CT reconstructions. METHOD: In a series of 375 scapular fractures, we identified a total of 20 fractures of the inferior angle of the scapular body (13 men, 7 women), with a mean patient age of 50 years (range 3373). In all fractures, 3D CT reconstructions were obtained, allowing an objective evaluation of the fracture pattern with a focus on the size and shape of the inferior angle fragment, propagation of the fracture line to the lateral and medial borders of the infraspinous part of the scapular body, fragment displacement and any additional fracture of the ipsilateral scapula and the shoulder girdle...
2018: Rozhledy V Chirurgii: Měsíčník Československé Chirurgické Společnosti
https://www.readbyqxmd.com/read/29427059/arthroplanner-a-surgical-planning-solution-for-acromioplasty
#3
Caecilia Charbonnier, Sylvain Chagué, Bart Kevelham, Delphine Preissmann, Frank C Kolo, Olivier Rime, Alexandre Lädermann
PURPOSE: We present a computer-assisted planning solution "ArthroPlanner" for acromioplasty based on 3D anatomical models, computed tomography and joint kinematic simulations. METHODS: In addition to a standard static clinical evaluation (anamnesis, radiological examination), the software provides a dynamic assessment of the shoulder joint by computing in real time the joint kinematics from a database of activities of daily living. During motion, the precise bone resection (location and amount) is computed based on detected subacromial impingements, providing surgeons with precise information about the surgical procedure...
February 9, 2018: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/29417986/three-dimensional-anatomy-of-the-anthropoid-bony-pelvis
#4
Carol V Ward, Scott D Maddux, Emily R Middleton
OBJECTIVES: Pelvic form is hypothesized to reflect locomotor adaptation in anthropoids. Most observed variation is found in the ilium, which traditionally is thought to reflect thoracic and shoulder morphology. This article examines the articulated bony pelvis of anthropoids in three dimensions (3D) to test hypothesized variation in pelvic anatomy related to overall torso form. MATERIALS AND METHODS: Sixty landmarks were collected on articulated pelves from 240 anthropoid individuals...
February 8, 2018: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/29399735/rotator-cuff-repair-post-operative-rehabilitation-concepts
#5
REVIEW
Terrance A Sgroi, Michelle Cilenti
PURPOSE OF REVIEW: With improvements in surgical techniques and increased knowledge of rotator cuff healing, there was a need to identify a safe progression after rotator cuff repair. The rehabilitation specialist plays an integral role in the care of these patients, and by implementing an evidence and criteria-based model, patients may be able to return to their prior levels of function sooner with fewer complications. RECENT FINDINGS: Timing of progression for rotator cuff patients should align not only with healing but also potential strain on the involved tissue...
February 5, 2018: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/29395551/quantitative-assessment-of-the-coracoacromial-and-the-coracoclavicular-ligaments-with-3-dimensional-mapping-of-the-coracoid-process-anatomy-a-cadaveric-study-of-surgically-relevant-structures
#6
Jorge Chahla, Daniel Cole Marchetti, Gilbert Moatshe, Márcio B Ferrari, George Sanchez, Alex W Brady, Jonas Pogorzelski, George F Lebus, Peter J Millett, Robert F LaPrade, Matthew T Provencher
PURPOSE: To perform a quantitative anatomic evaluation of the (1) coracoid process, specifically the attachment sites of the conjoint tendon, the pectoralis minor, the coracoacromial ligament (CAL), and the coracoclavicular (CC) ligaments in relation to pertinent osseous and soft tissue landmarks; (2) CC ligaments' attachments on the clavicle; and (3) CAL attachment on the acromion in relation to surgically relevant anatomic landmarks to assist in planning of the Latarjet procedure, acromioclavicular (AC) joint reconstructions, and CAL resection distances avoiding iatrogenic injury to surrounding structures...
January 24, 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29392730/three-dimensional-mobility-and-muscle-attachments-in-the-pectoral-limb-of-the-triassic-cynodont-massetognathus-pascuali-romer-1967
#7
Phil H Lai, Andrew A Biewener, Stephanie E Pierce
The musculoskeletal configuration of the mammalian pectoral limb has been heralded as a key anatomical feature leading to the adaptive radiation of mammals, but limb function in the non-mammaliaform cynodont outgroup remains unresolved. Conflicting reconstructions of abducted and adducted posture are based on mutually incompatible interpretations of ambiguous osteology. We reconstruct the pectoral limb of the Triassic non-mammaliaform cynodont Massetognathus pascuali in three dimensions, by combining skeletal morphology from micro-computed tomography with muscle anatomy from an extended extant phylogenetic bracket...
February 2, 2018: Journal of Anatomy
https://www.readbyqxmd.com/read/29366667/anatomical-characterization-of-the-brachial-plexus-in-dog-cadavers-and-comparison-of-three-blind-techniques-for-blockade
#8
Alicia Skelding, Alexander Valverde, Melissa Sinclair, Jeffrey Thomason, Noel Moens
OBJECTIVES: To describe the ventral spinal nerve rami contribution to the formation of the brachial plexus (BP), and to compare ease of performing and nerve staining between three blind techniques for BP blockade in dogs. STUDY DESIGN: Prospective, randomized, blind study. ANIMALS: A total of 18 dog cadavers weighing 28.2 ± 9.7 kg (mean ± standard deviation). METHODS: Dogs were randomly assigned to two of three BP treatments: traditional approach (TA), perpendicular approach (PA), and axillary approach (AA)...
December 12, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/29349020/an-arthroscopic-humeral-medializing-repair-of-the-supraspinatus
#9
Amir Ghazanfari, Daniel J H Henderson, Geoffroy Nourissat
Posterosuperior repair of the rotator cuff is one of the most frequently performed surgical procedures in the shoulder. Its aim is to fix the tendon back to the bone to restore anatomy, improve shoulder function, and prevent progression of cuff tear arthropathy and attendant muscle degeneration. Despite technical advances in this procedure, in some cases, the tendon cannot be fixed back to the footprint without excessive tension on the repair. In young patients or in patients with low-grade muscle atrophy and fatty degeneration (Goutallier grade 1 or 2), it is mandatory to attempt fixation of the tendon to restore functional anatomy and prevent further muscle degeneration...
December 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29314501/peripheral-nerve-stimulation-for-chronic-shoulder-pain-a-proof-of-concept-anatomy-study
#10
Michael Gofeld, Anne Agur
OBJECTIVES: Although spinal cord and dorsal root ganglia stimulation may be effective for managing regional pain syndromes, a more targeted approach is perhaps more appealing for discrete anatomical structures. Chronic shoulder pain is a common musculoskeletal problem with significant socioeconomic impact. A peripheral nerve stimulation of the axillary and suprascapular nerves may prove to be effective as a long-term solution for this indication. In anticipation of the future experimental research and clinical utilization, a sound methodology for the lead placement was developed, and its feasibility is tested in a cadaveric study...
January 3, 2018: Neuromodulation: Journal of the International Neuromodulation Society
https://www.readbyqxmd.com/read/29305099/the-posterior-ridge-of-the-greater-tuberosity-of-the-humerus-a-suitable-landmark-for-the-posterior-approach-to-the-shoulder-joint
#11
Karl Grob, Rebecca Helen Monahan, Mirjana Manestar, Luis Filgueira, Vilijam Zdravkovic
BACKGROUND: The purpose of this study was to evaluate the posterior ridge of the greater tuberosity, a palpable prominence during surgery, as a landmark for the posterior approach to the glenohumeral joint. METHODS: Twenty-five human cadaveric shoulders were dissected. In 5 cases, a full-thickness rotator cuff tear was present. The posterior surgical anatomy was defined, and the distance from the ridge to the interval between the infraspinatus (IS) and teres minor (TM) muscle, the distance from the ridge to the inferior border of the glenoid (IBG), and the distance between the IS-TM interval and the IBG were determined...
January 3, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29298261/automated-three-dimensional-measurement-of-glenoid-version-and-inclination-in-arthritic-shoulders
#12
Pascal Boileau, Damien Cheval, Marc-Olivier Gauci, Nicolas Holzer, Jean Chaoui, Gilles Walch
BACKGROUND: Preoperative computed tomography (CT) measurements of glenoid version and inclination are recommended for planning glenoid implantation in shoulder arthroplasty. However, current manual or semi-automated 2-dimensional (2D) and 3-dimensional (3D) methods are user-dependent and time-consuming. We assessed whether the use of a 3D automated method is accurate and reliable to measure glenoid version and inclination in osteoarthritic shoulders. METHODS: CT scans of osteoarthritic shoulders of 60 patients scheduled for shoulder arthroplasty were obtained...
January 3, 2018: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29276533/contraindications-and-complications-of-the-latarjet-procedure
#13
REVIEW
Peter Domos, Enricomaria Lunini, Gilles Walch
The Latarjet procedure is a well-known, safe and reliable technique to treat primary or recurrent anterior dislocations or subluxations, with or without hyperlaxity, with or without glenoid bone loss. Both the open and the arthroscopic methods produce excellent clinical results, with a low rate of recurrent instability. There have been concerns of a higher surgical complication rate associated with this procedure, however, large reviews reported an overall complication rate in the open Latarjet procedure of 15%...
January 2018: Shoulder & Elbow
https://www.readbyqxmd.com/read/29259848/the-shell-morphology-of-the-latest-cretaceous-maastrichtian-trionychid-turtle-helopanoplia-distincta
#14
Walter G Joyce, Tyler R Lyson
Background: Helopanoplia distincta is an extinct soft-shelled turtle (Pan-Trionychidae) for which the type specimen is a fragmentary costal and the inguinal notch portion of the left hypoplastron from the Late Cretaceous (Maastrichtian) Lance Formation of Wyoming, USA that bear a distinct surface sculpture pattern consisting of raised tubercles. Over the course of the past few decades, a number of additional, fragmentary specimens from the Late Cretaceous (Maastrichtian) Hell Creek Formation of Montana and North Dakota have been referred to this taxon based on the presence of these tubercles, but a more complete understanding of the anatomy and phylogenetic relationships of this distinctive soft-shelled turtle is still outstanding...
2017: PeerJ
https://www.readbyqxmd.com/read/29246482/percutaneous-fixation-of-valgus-displaced-fracture-of-the-proximal-humerus-using-a-single-screw
#15
S Gunst, G Walch, L Nové-Josserand
Valgus-impacted proximal humerus fracture is a classic but rare entity in shoulder traumatology. Surgical treatment is controversial, with increasing use of minimally invasive techniques. Our technique uses a minimally invasive approach under fluoroscopic control. Raising the humeral head to reduce the valgus enables spontaneous and well-positioned reduction of the tuberosities and screw fixation between the greater tuberosity and the humeral shaft. Indications comprise valgus-impacted fracture without comminution of the medial epiphyseal-metaphyseal hinge or greater tuberosity; the rotator cuff contributes to reduction and must be intact...
December 12, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/29242802/resistant-non-union-of-humerus-after-intramedullary-nailing-treated-with-locking-compression-plate-with-bone-grafting-with-nail-in-situ-and-shoulder-spica-a-case-report
#16
Jagdeep Singh, Anoop Kalia, Kavin Khatri, Anshul Dahuja
Introduction: Humerus non-union is a challenging situation for the surgeon and devastating and morbid situation for the patient. Surgical approach to the humerus is demanding because of the complex neurovascular anatomy and especially when previous surgeries have been attempted. Case Report: We report a case of a young adult male who sustained a compound fracture of humerus shaft treated with intramedullary nailing followed by subsequent bone grafting and eventually landed up in non-union and was treated at our center by locking compression plate application with nail in situ with iliac crest autogenous bone graft followed by shoulder spica application...
September 2017: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/29225162/can-ultrasound-be-used-to-improve-the-palpation-skills-of-physicians-in-training-a-prospective-study
#17
Ryan Woods, Steve J Wisniewski, Daniel R Lueders, Thomas P Pittelkow, Dirk R Larson, Jonathan T Finnoff
BACKGROUND: Accurate diagnosis of musculoskeletal disorders relies heavily upon the physical examination, including accurate palpation of musculoskeletal structures. The literature has suggested there has been deterioration of physical examination skills among medical students and residents in part due to increased reliance on advanced imaging. It has been shown that knowledge of musculoskeletal anatomy and physical examination skills improve with the use of ultrasound; however, the literature is limited...
December 7, 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/29225017/qualitative-and-quantitative-anatomy-of-the-proximal-humerus-muscle-attachments-and-the-axillary-nerve-a-cadaveric-study
#18
Gilbert Moatshe, Daniel Cole Marchetti, Jorge Chahla, Márcio B Ferrari, George Sanchez, George F Lebus, Alex W Brady, Rachel M Frank, Robert F LaPrade, Matthew T Provencher
PURPOSE: To provide a quantitative and qualitative anatomic analysis of the pectoralis major, teres major, and latissimus dorsi on the humerus, as well as the deltoid tendinous attachments on the proximal humerus and acromion, and to quantitatively characterize the humeral course of the axillary nerve. METHODS: Ten nonpaired, fresh-frozen human cadaveric shoulders were analyzed. A portable coordinate-measuring device quantified the location of bony landmarks and tendon attachment areas...
December 7, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29215442/an-anatomic-morphological-study-of-occipital-spurs-in-human-skulls
#19
Monika Srivastava, Adil Asghar, Nitya Nand Srivastava, Nandkishore Gupta, Anuj Jain, Jayant Verma
Occipital spurs are quite common; however, they are also the source of frequent discomfort to the patients. Their role has been implicated in causation of pain at the base of skull, which may extend to shoulder limiting the movement of the shoulder and neck. The present was carried out to find out the prevalence of occipital spur in human skull and to find out the anatomic morphological characteristics of occipital spur. A total of 30 cadaveric skulls were examined in the Department of Anatomy, Uttar Pradesh University of Medical Sciences, for the presence of occipital spur...
January 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29205214/biomechanics-of-the-shoulder-girdle-a-case-study-on-the-effects-of-union-rugby-tackles
#20
Luís Faria, Bárbara Campos, Renato Natal Jorge
PURPOSE: The shoulder girdle is a complex system, comprised by a kinematic chain and stabilizers. Due to the delicate equilibrium and synchronism between mobility and stability, high external loads may compromise its physiology, increasing the risk of injuries. Thus, this study intends to fully characterize the effects of a rugby tackle on the shoulder's anatomy and physiology. METHODS: For the experimental procedures, a matrix of pressure sensors was used, based on the Teckscan® pressure in-soles, force plates, an isokinetic dynamometer and sEMG (surface electromyography)...
2017: Acta of Bioengineering and Biomechanics
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