Acromion and Glenoid Shape: Why Are They Important Predictive Factors for the Future of Our Shoulders?
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Considered a Bone of Both Shoulder Girdle and Shoulder Joint. the Shoulder Girdle Is Comprised of the Clavicle and the Scapula
Considered a bone of both shoulder girdle and shoulder joint. The shoulder girdle is comprised of the clavicle and the scapula. The shoulder joint consists of the scapula and the humerus. The primary function of the shoulder girdle is to position itself to accommodate movements of the shoulder joint. 1 Superior angle—top point Inferior angle—bottom point Vertebral border—side closest to vertebral column Axillary border—side closest to arm Subscapular fossa—anterior fossa Glenoid fossa, glenoid labrum, glenoid cavity --The glenoid fossa is the shallow cavity where the humeral head goes. The glenoid labrum is the cartilage that goes around the glenoid fossa. So the glenoid fossa and glenoid labrum together comprise the glenoid cavity. Supraspinous fossa—posterior, fossa above the spine Spine of the scapula—the back projection Infraspinous fossa—posterior depression/fossa below spine Coracoid process—anterior projection head Acromion process—posterior projection head above spine 2 Scapulothoracic “joint” = NOT a true joint; there are no ligaments or articular capsule. The scapula just rests on the muscle over top the rib cage, which allows for passive movements. Sternoclavicular joint=where the clavicle (collarbone) and the sternum (breastbone) articulate; movement is slight in all directions and of a gliding, rotational type Acromioclavicular joint = where the clavicle and scapula (acromion process) articulate; AKA: AC Joint; movement is a slight gliding when elevation and depression take place. Glenohumeral joint = the shoulder joint 3 4 All 3 true joints: Sternoclavicular, AC and glenohumeral (GH) all work together to move arm in all directions. The GH allows the arm to go out to the side and be abducted, then the AC and Sternoclavicular joints kick in to allow the arm to go above shoulder level by allowing the shoulderblade to move up to increase the range of motion (ROM). -
Body Mechanics As the Rotator Cuff Gether in a Cuff-Shape Across the Greater and Lesser Tubercles the on Head of the Humerus
EXPerT CONTENT Body Mechanics by Joseph E. Muscolino | Artwork Giovanni Rimasti | Photography Yanik Chauvin Rotator Cuff Injury www.amtamassage.org/mtj WORKING WITH CLieNTS AFFecTED BY THIS COmmON CONDITION ROTATOR CUFF GROUP as the rotator cuff group because their distal tendons blend and attach to- The four rotator cuff muscles are gether in a cuff-shape across the greater and lesser tubercles on the head of the supraspinatus, infraspinatus, the humerus. Although all four rotator cuff muscles have specific concen- teres minor, and subscapularis (Fig- tric mover actions at the glenohumeral (GH) joint, their primary functional ure 1). These muscles are described importance is to contract isometrically for GH joint stabilization. Because 17 Before practicing any new modality or technique, check with your state’s or province’s massage therapy regulatory authority to ensure that it is within the defined scope of practice for massage therapy. the rotator cuff group has both mover and stabilization roles, it is extremely functionally active and therefore often physically stressed and injured. In fact, after neck and low back conditions, the shoulder is the most com- Supraspinatus monly injured joint of the human body. ROTATOR CUFF PATHOLOGY The three most common types of rotator cuff pathology are tendinitis, tendinosus, and tearing. Excessive physi- cal stress placed on the rotator cuff tendon can cause ir- ritation and inflammation of the tendon, in other words, tendinitis. If the physical stress is chronic, the inflam- matory process often subsides and degeneration of the fascial tendinous tissue occurs; this is referred to as tendinosus. The degeneration of tendinosus results in weakness of the tendon’s structure, and with continued Teres minor physical stress, whether it is overuse microtrauma or a macrotrauma, a rotator cuff tendon tear might occur. -
Scapular Motion Tracking Using Acromion Skin Marker Cluster: in Vitro Accuracy Assessment
Scapular Motion Tracking Using Acromion Skin Marker Cluster: In Vitro Accuracy Assessment Andrea Cereatti, Claudio Rosso, Ara Nazarian, Joseph P. DeAngelis, Arun J. Ramappa & Ugo Della Croce Journal of Medical and Biological Engineering ISSN 1609-0985 J. Med. Biol. Eng. DOI 10.1007/s40846-015-0010-2 1 23 Your article is protected by copyright and all rights are held exclusively by Taiwanese Society of Biomedical Engineering. This e- offprint is for personal use only and shall not be self-archived in electronic repositories. If you wish to self-archive your article, please use the accepted manuscript version for posting on your own website. You may further deposit the accepted manuscript version in any repository, provided it is only made publicly available 12 months after official publication or later and provided acknowledgement is given to the original source of publication and a link is inserted to the published article on Springer's website. The link must be accompanied by the following text: "The final publication is available at link.springer.com”. 1 23 Author's personal copy J. Med. Biol. Eng. DOI 10.1007/s40846-015-0010-2 ORIGINAL ARTICLE Scapular Motion Tracking Using Acromion Skin Marker Cluster: In Vitro Accuracy Assessment Andrea Cereatti • Claudio Rosso • Ara Nazarian • Joseph P. DeAngelis • Arun J. Ramappa • Ugo Della Croce Received: 11 October 2013 / Accepted: 20 March 2014 Ó Taiwanese Society of Biomedical Engineering 2015 Abstract Several studies have recently investigated how estimated using an AMC combined with a single anatom- the implementations of acromion marker clusters (AMCs) ical calibration, the accuracy was highly dependent on the method and stereo-photogrammetry affect the estimates of specimen and the type of motion (maximum errors between scapula kinematics. -
Spontaneous Fracture of the Scapula Spines in Association with Severe Rotator Cuff Disease and Osteoporosis
Central Annals of Musculoskeletal Disorders Case Report *Corresponding author Hans Van der Wall, CNI Molecular Imaging & University of Notre Dame, Sydney, Australia, Tel: +61 2 9736 1040; Spontaneous Fracture of the FAX: +61 2 9736 2095; Email: [email protected] Submitted: 25 March 2020 Scapula Spines in Association Accepted: 07 April 2020 Published: 10 April 2020 ISSN: 2578-3599 with Severe Rotator Cuff Copyright © 2020 Robert B, et al. Disease and Osteoporosis OPEN ACCESS 1 2 3 Breit Robert , Strokon Andrew , Burton Leticia , Van der Wall Keywords H3* and Bruce Warwick3 • Scapular fracture • Rotator cuff arthropathy 1CNI Molecular Imaging, Australia • Osteoporosis 2Sydney Private Hospital, Australia • Scintigraphy 3CNI Molecular Imaging & University of Notre Dame, Sydney, Australia • SPECT/ CT 4Concord Hospital, Australia Abstract We present the case of a 74 year-old woman with diabetes mellitus and established osteoporosis who initially presented with increasing pain and disability of the shoulders. Investigations showed severe rotator cuff disease. This was treated conservatively with physiotherapy and corticosteroid injection into both joints with good pain relief but no improvement in function. She subsequently presented with increasing posterior thoracic pain with plain films reporting no evidence of rib fracture. Bone scintigraphy showed severe rotator cuff disease and degenerative joint disease at multiple sites. The single photon emission computed tomography (SPECT)/ x-ray Computed Tomography (CT) showed bilateral scapula spine fractures of long standing with a probable non-union on the left side. These fractures are rare and difficult to treat when associated with rotator cuff disease. INTRODUCTION Fractures of the scapula spine are rare, with a reported level of dysfunction remained significant with marked restriction frequency of less than twenty cases in the literature [1-8]. -
Distal Clavicle Resection
www.ashevilleortho.com Distal Clavicle Resection Impingement syndrome and associated rotator cuff tears are commonly encountered shoulder problems. This condition is caused when the rotator cuff tendons rub the underside of the acromion bone. Chronic rubbing can lead to a weakening and even tearing of the rotator cuff. Symptoms include pain, weakness and loss of motion. Whether this procedure is done using a scope or through a small incision is dependent on the severity of the tear and the doctor’s preference. The method shown in these animations is with a scope. This content is for informational purposes only. It is not intended to represent actual surgical technique or results. The information is not intended to be a substitute for professional medical advice, diagnosis, treatment or care. Always seek the advice of a medical professional when you have a medical condition. Do not disregard professional medical advice or delay in seeking advice if you have read something in this printout. Copyright © 2013, Understand.com, LLC, All Rights Reserved. Asheville Orthopaedic Associates • (828) 252-7331 www.ashevilleortho.com Distal Clavicle Resection Introduction Impingement syndrome and associated rotator cuff tears are commonly encountered shoulder problems. This condition is caused when the rotator cuff tendons rub the underside of the acromion bone. Chronic rubbing can lead to a weakening and even tearing of the rotator cuff. Symptoms include pain, weakness and loss of motion. Whether this procedure is done using a scope or through a small incision is dependent on the severity of the tear and the doctor’s preference. The method shown in these animations is with a scope. -
Subacromial Decompression in the Shoulder
Subacromial Decompression Geoffrey S. Van Thiel, Matthew T. Provencher, Shane J. Nho, and Anthony A. Romeo PROCEDURE 2 22 Indications P ITFALLS ■ Impingement symptoms refractory to at least • There are numerous possible 3 months of nonoperative management causes of shoulder pain that can ■ In conjunction with arthroscopic treatment of a mimic impingement symptoms. All potential causes should be rotator cuff tear thoroughly evaluated prior to ■ Relative indication: type II or III acromion with undertaking operative treatment clinical fi ndings of impingement of isolated impingement syndrome. Examination/Imaging Subacromial Decompression PHYSICAL EXAMINATION ■ Assess the patient for Controversies • Complete shoulder examination with range of • Subacromial decompression in motion and strength the treatment of rotator cuff • Tenderness with palpation over anterolateral pathology has been continually acromion and supraspinatus debated. Prospective studies • Classic Neer sign with anterolateral shoulder have suggested that there is no difference in outcomes with and pain on forward elevation above 90° when without subacromial the greater tuberosity impacts the anterior decompression. acromion (and made worse with internal rotation) • Subacromial decompression • Positive Hawkins sign: pain with internal rotation, performed in association with a forward elevation to 90°, and adduction, which superior labrum anterior- causes impingement against the coracoacromial posterior (SLAP) repair can potentially increase ligament postoperative stiffness. ■ The impingement test is positive if the patient experiences pain relief with a subacromial injection of lidocaine. ■ Be certain to evaluate for acromioclavicular (AC) joint pathology, and keep in mind that there are several causes of shoulder pain that can mimic impingement syndrome. P ITFALLS IMAGING • Ensure that an axillary lateral ■ Standard radiographs should be ordered, view is obtained to rule out an os acromiale. -
Phty 101 – Week 1
PHTY 101 – WEEK 1 1.7 Classify the shoulder (glenohumeral) joint and identify and/or describe its: • The glenohumeral joint is a multiaxial, synovial, ball and socket joint • Movements: o Flexion and extension- transverse axis o Abduction and adduction- anteroposterior axis o Internal and external rotation- longitudinal axis • Greatest amount of motion and most unstable joint in body • Function: positions and directs humerus, elbow and hand in relation to trunk (radioulnar joint deal with palm and fingers) • Combines with scapulothoracic, acromioclavicular and sternoclavicular joints • Articular surfaces: o Humeral head- ½ sphere, faces medially o Glenoid fossa- very shallow, faces laterally o Only 25-30% contact between articular surfaces o Shallower and smaller surface compared to hip • Glenoid labrum o Glenoid labrum- fibrous structure around glenoid fossa (adheres to edges), central part avascular and edges not greatly vascularised à doesn’t heal well, labrum functions to; - Facilitate mobility - Increase glenoid concavity- increasing mobility - Provide attachment for joint capsule, ligaments and muscles • Joint capsule o Very thin and lax- doesn’t compromise ROM o Attaches to glenoid labrum o Reflected (folded) inferiorly onto medial shaft of humerus o Reinforced by; - Rotator cuff tendons- supraspinatus, infraspinatus, teres minor, subscapularis - Rotator cuff tendons- action: internal or external rotation, function: pull humerus head in against fossa - Glenohumeral and coracohumeral ligaments (capsular) • Synovial membrane o Lines -
The Appendicular Skeleton Appendicular Skeleton
THE SKELETAL SYSTEM: THE APPENDICULAR SKELETON APPENDICULAR SKELETON The primary function is movement It includes bones of the upper and lower limbs Girdles attach the limbs to the axial skeleton SKELETON OF THE UPPER LIMB Each upper limb has 32 bones Two separate regions 1. The pectoral (shoulder) girdle (2 bones) 2. The free part (30 bones) THE PECTORAL (OR SHOULDER) GIRDLE UPPER LIMB The pectoral girdle consists of two bones, the scapula and the clavicle The free part has 30 bones 1 humerus (arm) 1 ulna (forearm) 1 radius (forearm) 8 carpals (wrist) 19 metacarpal and phalanges (hand) PECTORAL GIRDLE - CLAVICLE The clavicle is “S” shaped The medial end articulates with the manubrium of the sternum forming the sternoclavicular joint The lateral end articulates with the acromion forming the acromioclavicular joint THE CLAVICLE PECTORAL GIRDLE - CLAVICLE The clavicle is convex in shape anteriorly near the sternal junction The clavicle is concave anteriorly on its lateral edge near the acromion CLINICAL CONNECTION - FRACTURED CLAVICLE A fall on an outstretched arm (F.O.O.S.H.) injury can lead to a fractured clavicle The clavicle is weakest at the junction of the two curves Forces are generated through the upper limb to the trunk during a fall Therefore, most breaks occur approximately in the middle of the clavicle PECTORAL GIRDLE - SCAPULA Also called the shoulder blade Triangular in shape Most notable features include the spine, acromion, coracoid process and the glenoid cavity FEATURES ON THE SCAPULA Spine - -
Bone Limb Upper
Shoulder Pectoral girdle (shoulder girdle) Scapula Acromioclavicular joint proximal end of Humerus Clavicle Sternoclavicular joint Bone: Upper limb - 1 Scapula Coracoid proc. 3 angles Superior Inferior Lateral 3 borders Lateral angle Medial Lateral Superior 2 surfaces 3 processes Posterior view: Acromion Right Scapula Spine Coracoid Bone: Upper limb - 2 Scapula 2 surfaces: Costal (Anterior), Posterior Posterior view: Costal (Anterior) view: Right Scapula Right Scapula Bone: Upper limb - 3 Scapula Glenoid cavity: Glenohumeral joint Lateral view: Infraglenoid tubercle Right Scapula Supraglenoid tubercle posterior anterior Bone: Upper limb - 4 Scapula Supraglenoid tubercle: long head of biceps Anterior view: brachii Right Scapula Bone: Upper limb - 5 Scapula Infraglenoid tubercle: long head of triceps brachii Anterior view: Right Scapula (with biceps brachii removed) Bone: Upper limb - 6 Posterior surface of Scapula, Right Acromion; Spine; Spinoglenoid notch Suprspinatous fossa, Infraspinatous fossa Bone: Upper limb - 7 Costal (Anterior) surface of Scapula, Right Subscapular fossa: Shallow concave surface for subscapularis Bone: Upper limb - 8 Superior border Coracoid process Suprascapular notch Suprascapular nerve Posterior view: Right Scapula Bone: Upper limb - 9 Acromial Clavicle end Sternal end S-shaped Acromial end: smaller, oval facet Sternal end: larger,quadrangular facet, with manubrium, 1st rib Conoid tubercle Trapezoid line Right Clavicle Bone: Upper limb - 10 Clavicle Conoid tubercle: inferior -
Trapezius Origin: Occipital Bone, Ligamentum Nuchae & Spinous Processes of Thoracic Vertebrae Insertion: Clavicle and Scapul
Origin: occipital bone, ligamentum nuchae & spinous processes of thoracic vertebrae Insertion: clavicle and scapula (acromion Trapezius and scapular spine) Action: elevate, retract, depress, or rotate scapula upward and/or elevate clavicle; extend neck Origin: spinous process of vertebrae C7-T1 Rhomboideus Insertion: vertebral border of scapula Minor Action: adducts & performs downward rotation of scapula Origin: spinous process of superior thoracic vertebrae Rhomboideus Insertion: vertebral border of scapula from Major spine to inferior angle Action: adducts and downward rotation of scapula Origin: transverse precesses of C1-C4 vertebrae Levator Scapulae Insertion: vertebral border of scapula near superior angle Action: elevates scapula Origin: anterior and superior margins of ribs 1-8 or 1-9 Insertion: anterior surface of vertebral Serratus Anterior border of scapula Action: protracts shoulder: rotates scapula so glenoid cavity moves upward rotation Origin: anterior surfaces and superior margins of ribs 3-5 Insertion: coracoid process of scapula Pectoralis Minor Action: depresses & protracts shoulder, rotates scapula (glenoid cavity rotates downward), elevates ribs Origin: supraspinous fossa of scapula Supraspinatus Insertion: greater tuberacle of humerus Action: abduction at the shoulder Origin: infraspinous fossa of scapula Infraspinatus Insertion: greater tubercle of humerus Action: lateral rotation at shoulder Origin: clavicle and scapula (acromion and adjacent scapular spine) Insertion: deltoid tuberosity of humerus Deltoid Action: -
Alliance Glenoid Surgical Technique
Alliance™ Glenoid Surgical Technique Table of Contents Indications/Contraindications ................................................................................. 2 Introduction .............................................................................................................. 3 Compatibility with Other Zimmer Biomet Humeral Heads ..................................... 3 Pre-Operative Planning ............................................................................................ 3 Technique Summary ................................................................................................. 4 4-Peg Modular Glenoid ............................................................................................ 9 4-Peg Modular Augmented Glenoid ...................................................................... 13 3-Peg Modular Glenoid .......................................................................................... 20 3-Peg Monoblock Glenoid ...................................................................................... 24 2-Peg Monoblock Glenoid ...................................................................................... 28 Revision ................................................................................................................... 32 2 | Alliance Glenoid Surgical Technique The Alliance Glenoid has the following indications/intended uses: INDICATIONS CONTRAINDICATIONS • Non-inflammatory degenerative joint disease Absolute contraindications include infection, sepsis, including -
The Role of Scapular Morphology in Reverse Shoulder Arthroplasty
Western University Scholarship@Western Electronic Thesis and Dissertation Repository 12-7-2016 12:00 AM The Role of Scapular Morphology in Reverse Shoulder Arthroplasty Ashish Gupta The University of Western Ontario Supervisor Dr Louis M Ferreira The University of Western Ontario Joint Supervisor Dr George Athwal The University of Western Ontario Graduate Program in Surgery A thesis submitted in partial fulfillment of the equirr ements for the degree in Master of Science © Ashish Gupta 2016 Follow this and additional works at: https://ir.lib.uwo.ca/etd Part of the Biomechanics and Biotransport Commons, Biomedical Devices and Instrumentation Commons, and the Orthopedics Commons Recommended Citation Gupta, Ashish, "The Role of Scapular Morphology in Reverse Shoulder Arthroplasty" (2016). Electronic Thesis and Dissertation Repository. 4357. https://ir.lib.uwo.ca/etd/4357 This Dissertation/Thesis is brought to you for free and open access by Scholarship@Western. It has been accepted for inclusion in Electronic Thesis and Dissertation Repository by an authorized administrator of Scholarship@Western. For more information, please contact [email protected]. Abstract Baseplate fixation in a reverse shoulder arthroplasty depends on adequate bone stock. In cases of severe glenoid bone loss and revision shoulder arthroplasty, deficiency of the glenoid vault compels the surgeon to attain screw fixation in the three columns of the scapula. The relationship of these columns demonstrated that the coracoid is closer to the lateral scapular pillar in females than in males. Significant gender dimorphism exists between the orientations of the three columns. The gender dimorphism is further evaluated by anthropometric measurements of the scapular body and the glenoid.