Which part should I turn into a detailed MBBS exam note first?

anatomy diagram of glenohumeral shoulder joint capsule ligaments rotator cuff

"shoulder joint" anatomy

shoulder joint anatomy glenohumeral ligaments rotator cuff authoritative anatomy

glenohumeral shoulder joint diagram articular surfaces capsule ligaments labelled

site:teachmeanatomy.info shoulder joint anatomy ligaments capsule movements

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https://teachmeanatomy.info/upper-limb/joints/shoulder

mkdir -p "/tmp/workspace/shoulder-joint-reference/assets" "/tmp/workspace/shoulder-joint-reference/output" "/tmp/workspace/shoulder-joint-reference/src" && python -c "import requests; urls={'articular.png':'https://cdn.orris.care/cdss_images/33e14ad219962c8457b3f5b06ac406c8251fe5a64cc5df32c54dde02b59cee64.png','capsule.png':'https://cdn.orris.care/cdss_images/91b38f65e08a9bf65eb062e8255c4826f17753ec48c7bd645ae2dfedee1ce3a5.png','cuff.png':'https://cdn.orris.care/cdss_images/8665f17e80897bddfe18d640e28ca34cd8a572154a9d0ecb2db33c605af0ffa6.png'}; p='/tmp/workspace/shoulder-joint-reference/assets/'; [open(p+n,'wb').write(requests.get(u,timeout=30).content) for n,u in urls.items()]" && python -c "from PIL import Image; import os; p='/tmp/workspace/shoulder-joint-reference/assets/'; [print(n, Image.open(p+n).size) for n in os.listdir(p)]"

python - <<'PY' from PIL import Image p='/tmp/workspace/shoulder-joint-reference/assets/' for f in ['articular.png','capsule.png','cuff.png']: im=Image.open(p+f) im.thumbnail((1200,1000)) im.convert('RGB').save(p+f.replace('.png','.jpg'),quality=88) PY ls -lh "/tmp/workspace/shoulder-joint-reference/assets"

python - <<'PY' from reportlab.lib.pagesizes import A4 from reportlab.lib import colors from reportlab.lib.styles import getSampleStyleSheet, ParagraphStyle from reportlab.lib.enums import TA_CENTER from reportlab.lib.units import cm from reportlab.platypus import SimpleDocTemplate, Paragraph, Spacer, Image, Table, TableStyle, PageBreak, KeepTogether from reportlab.pdfbase.pdfmetrics import stringWidth from reportlab.lib.colors import HexColor from reportlab.pdfbase.ttfonts import TTFont from reportlab.pdfbase import pdfmetrics from reportlab.lib.utils import ImageReader from PIL import Image as PILImage import os root='/tmp/workspace/shoulder-joint-reference' out=root+'/output/Shoulder_Joint_Anatomy_1st_Year_MBBS.pdf' assets=root+'/assets' styles=getSampleStyleSheet() styles.add(ParagraphStyle(name='CoverTitle', parent=styles['Title'], fontName='Helvetica-Bold', fontSize=25, leading=30, textColor=HexColor('#103B5C'), alignment=TA_CENTER, spaceAfter=10)) styles.add(ParagraphStyle(name='CoverSub', parent=styles['Normal'], fontSize=12, leading=16, alignment=TA_CENTER, textColor=HexColor('#44546A'))) styles.add(ParagraphStyle(name='H1x', parent=styles['Heading1'], fontName='Helvetica-Bold', fontSize=17, leading=21, textColor=HexColor('#103B5C'), spaceBefore=12, spaceAfter=7)) styles.add(ParagraphStyle(name='H2x', parent=styles['Heading2'], fontName='Helvetica-Bold', fontSize=12.2, leading=15, textColor=HexColor('#176B87'), spaceBefore=8, spaceAfter=4)) styles.add(ParagraphStyle(name='Bodyx', parent=styles['BodyText'], fontSize=9.5, leading=13, spaceAfter=5)) styles.add(ParagraphStyle(name='Smallx', parent=styles['BodyText'], fontSize=8.2, leading=10.5, textColor=HexColor('#4D5966'))) styles.add(ParagraphStyle(name='Caption', parent=styles['BodyText'], fontSize=8.1, leading=10, alignment=TA_CENTER, textColor=HexColor('#4D5966'), spaceAfter=8)) styles.add(ParagraphStyle(name='Box', parent=styles['BodyText'], fontSize=9.3, leading=12.5, textColor=HexColor('#1D3445'))) def P(t, style='Bodyx'): return Paragraph(t, styles[style]) def pic(name, maxw=16.5*cm, maxh=10.5*cm): path=os.path.join(assets,name) im=PILImage.open(path); w,h=im.size scale=min(maxw/w,maxh/h) return Image(path,width=w*scale,height=h*scale) def bullets(items): return [P('&bull; '+x) for x in items] def section_title(text): return P(text,'H1x') def info_box(title, text): t=Table([[P('<b>'+title+'</b><br/>'+text,'Box')]], colWidths=[17.2*cm]) t.setStyle(TableStyle([('BACKGROUND',(0,0),(-1,-1),HexColor('#EAF4F7')),('BOX',(0,0),(-1,-1),0.6,HexColor('#86B9C8')),('LEFTPADDING',(0,0),(-1,-1),9),('RIGHTPADDING',(0,0),(-1,-1),9),('TOPPADDING',(0,0),(-1,-1),7),('BOTTOMPADDING',(0,0),(-1,-1),7)])) return t def footer(canvas,doc): canvas.saveState(); canvas.setStrokeColor(HexColor('#B9CBD3')); canvas.line(1.5*cm,1.35*cm,19.5*cm,1.35*cm) canvas.setFont('Helvetica',8); canvas.setFillColor(HexColor('#546A76')) canvas.drawString(1.5*cm,.85*cm,'Shoulder Joint Anatomy | 1st Year MBBS') canvas.drawRightString(19.5*cm,.85*cm,f'Page {doc.page}') canvas.restoreState() doc=SimpleDocTemplate(out,pagesize=A4, rightMargin=1.5*cm,leftMargin=1.5*cm,topMargin=1.45*cm,bottomMargin=1.7*cm) story=[] story += [Spacer(1,2.3*cm),P('ANATOMY OF THE<br/>SHOULDER JOINT','CoverTitle'),P('Illustrated reference note for 1st Year MBBS','CoverSub'),Spacer(1,.5*cm),pic('articular.jpg',15.2*cm,8.5*cm),P('Fig. 1. Articular surfaces of the right glenohumeral joint. Source: Gray\'s Anatomy for Students, Fig. 7.25, p. 826.','Caption'),Spacer(1,.2*cm),info_box('Learning aim','Describe the type, articular surfaces, capsule, ligaments, bursae, relations, movements, stability, nerve and blood supply, and important applied anatomy of the glenohumeral joint.'),PageBreak()] story += [section_title('1. Definition and type'),P('The <b>shoulder joint</b>, also called the <b>glenohumeral joint</b>, is the articulation between the head of humerus and the glenoid cavity of scapula. It is a <b>synovial, multiaxial ball-and-socket joint</b>. It has an exceptionally wide range of movement, but this is associated with relatively low bony stability.'), section_title('2. Articular surfaces and labrum'),*bullets(['<b>Head of humerus:</b> large, spherical articular surface.', '<b>Glenoid cavity:</b> shallow, small articular surface on the lateral angle of scapula.', '<b>Articular cartilage:</b> both surfaces are covered by hyaline cartilage.', '<b>Glenoid labrum:</b> a fibrocartilaginous rim attached to the margin of the glenoid cavity. It deepens and enlarges the socket. Superiorly it is continuous with the tendon of the long head of biceps brachii, which attaches at the supraglenoid tubercle.']), info_box('Exam point','The humeral head is much larger than the glenoid cavity. This mismatch permits mobility but contributes to instability. The labrum partly compensates by deepening the cavity.'), section_title('3. Capsule and synovial membrane'),*bullets(['<b>Capsular attachment:</b> medially to the margin of the glenoid cavity, outside the labrum; laterally to the anatomical neck of humerus. Inferiorly, its humeral attachment extends below the neck onto the shaft.', '<b>Capsule:</b> thin and lax, especially inferiorly. The inferior fold accommodates abduction.', '<b>Synovial membrane:</b> lines the inner surface of fibrous capsule and attaches at margins of articular cartilage. It forms a tubular sheath around the tendon of long head of biceps in the intertubercular sulcus.'])] story += [PageBreak(),section_title('4. Ligaments and bursae'),pic('capsule.jpg',11.5*cm,11.3*cm),P('Fig. 2. Capsule and reinforcing ligaments of the right glenohumeral joint. Source: Gray\'s Anatomy for Students, Fig. 7.27, p. 827.','Caption'),P('<b>Ligaments</b>','H2x'),*bullets(['<b>Superior, middle and inferior glenohumeral ligaments:</b> thickenings of the anterior and superior capsule. They run from the superomedial glenoid margin toward the lesser tubercle and adjacent anatomical neck of humerus.', '<b>Coracohumeral ligament:</b> extends from base of coracoid process to greater tubercle of humerus; reinforces the superior capsule.', '<b>Transverse humeral ligament:</b> bridges greater and lesser tubercles, retaining the long-head biceps tendon in the intertubercular sulcus.', '<b>Coraco-acromial arch:</b> formed by coracoid process, acromion and coraco-acromial ligament. It prevents superior displacement of the humeral head.']),P('<b>Bursae</b>','H2x'),*bullets(['<b>Subscapular (subtendinous) bursa:</b> between subscapularis tendon and capsule; commonly communicates with joint cavity.', '<b>Subacromial/subdeltoid bursa:</b> between acromion or deltoid and supraspinatus tendon/capsule; normally does <b>not</b> communicate with the joint cavity. It reduces friction during abduction.'])] movement_data=[[P('<b>Movement</b>','Smallx'),P('<b>Main muscles</b>','Smallx')], [P('Flexion','Smallx'),P('Anterior deltoid, clavicular head of pectoralis major, coracobrachialis, biceps brachii','Smallx')], [P('Extension','Smallx'),P('Posterior deltoid, latissimus dorsi, teres major, long head of triceps','Smallx')], [P('Abduction','Smallx'),P('Supraspinatus initiates first ~15°; deltoid is chief abductor thereafter. Upward rotation of scapula is required for full elevation.','Smallx')], [P('Adduction','Smallx'),P('Pectoralis major, latissimus dorsi, teres major, coracobrachialis','Smallx')], [P('Medial rotation','Smallx'),P('Subscapularis, pectoralis major, latissimus dorsi, teres major, anterior deltoid','Smallx')], [P('Lateral rotation','Smallx'),P('Infraspinatus, teres minor, posterior deltoid','Smallx')], [P('Circumduction','Smallx'),P('Sequential combination of flexion, abduction, extension and adduction','Smallx')]] mt=Table(movement_data,colWidths=[3.2*cm,14*cm],repeatRows=1) mt.setStyle(TableStyle([('BACKGROUND',(0,0),(-1,0),HexColor('#176B87')),('TEXTCOLOR',(0,0),(-1,0),colors.white),('GRID',(0,0),(-1,-1),.35,HexColor('#B5C9D2')),('VALIGN',(0,0),(-1,-1),'TOP'),('BACKGROUND',(0,1),(-1,-1),HexColor('#F7FAFB')),('LEFTPADDING',(0,0),(-1,-1),6),('RIGHTPADDING',(0,0),(-1,-1),6),('TOPPADDING',(0,0),(-1,-1),5),('BOTTOMPADDING',(0,0),(-1,-1),5)])) story += [PageBreak(),section_title('5. Movements and muscles'),P('Movements include flexion, extension, abduction, adduction, medial rotation, lateral rotation and circumduction.'),mt,Spacer(1,.2*cm),info_box('Scapulohumeral rhythm','After the initial phase of abduction, full elevation depends on movement at the scapulothoracic articulation as well as at the glenohumeral joint. A commonly taught relationship is about 2° of glenohumeral movement for every 1° of scapular upward rotation.'),section_title('6. Relations and rotator cuff'),*bullets(['<b>Superior:</b> supraspinatus tendon, subacromial bursa, coraco-acromial arch and deltoid.', '<b>Anterior:</b> subscapularis, coracobrachialis, short head of biceps and deltoid.', '<b>Posterior:</b> infraspinatus, teres minor and posterior deltoid.', '<b>Inferior:</b> long head of triceps; axillary nerve and posterior circumflex humeral vessels lie near the inferior aspect/surgical neck.'])] story += [PageBreak(),section_title('7. Stability of the shoulder joint'),pic('cuff.jpg',12.4*cm,10.0*cm),P('Fig. 3. Surrounding muscles and the rotator cuff at the right glenohumeral joint. Source: Gray\'s Anatomy for Students, Fig. 7.28, p. 828.','Caption'),P('Because the glenoid cavity is shallow, stability depends predominantly on soft tissues.'),*bullets(['<b>Dynamic stabilizers:</b> rotator cuff muscles: <b>SITS</b> = supraspinatus, infraspinatus, teres minor and subscapularis. Their tendons blend with the capsule and hold the humeral head against the glenoid during movement.', '<b>Long head of biceps:</b> assists in limiting superior displacement of the humeral head.', '<b>Static stabilizers:</b> labrum, capsule, glenohumeral and coracohumeral ligaments, and negative intra-articular pressure.', '<b>Superior bony-ligamentous protection:</b> coraco-acromial arch.']),section_title('8. Blood and nerve supply'),*bullets(['<b>Arterial supply:</b> anterior and posterior circumflex humeral arteries and suprascapular artery.', '<b>Nerve supply:</b> chiefly axillary and suprascapular nerves; articular branches may also arise from lateral pectoral and subscapular nerves.'])] story += [PageBreak(),section_title('9. Applied anatomy'),P('<b>Anterior dislocation</b>','H2x'),P('The shoulder is the most frequently dislocated major joint. Dislocation is usually <b>anterior and inferior</b>, often when the arm is abducted and laterally rotated. The weak inferior part of the capsule and shallow glenoid contribute. Assess the <b>axillary nerve</b>: injury causes weak deltoid function and sensory loss over the lateral shoulder, the “regimental badge” area.'),P('<b>Rotator-cuff disease</b>','H2x'),P('The supraspinatus tendon is particularly susceptible to impingement beneath the coraco-acromial arch. Tendinopathy or tear may cause pain on abduction and weakness, especially in initiating abduction.'),P('<b>Frozen shoulder (adhesive capsulitis)</b>','H2x'),P('Fibrosis and contraction of the capsule produce painful restriction of both active and passive movements, particularly lateral rotation and abduction.'),P('<b>Subacromial bursitis</b>','H2x'),P('Inflammation of the subacromial bursa can cause painful shoulder elevation.'),section_title('10. One-minute viva revision'),*bullets(['<b>Type?</b> Synovial, multiaxial ball-and-socket joint.', '<b>Articular surfaces?</b> Head of humerus and glenoid cavity of scapula, both covered by hyaline cartilage.', '<b>Labrum?</b> Fibrocartilaginous rim that deepens the glenoid cavity.', '<b>Rotator cuff?</b> Supraspinatus, infraspinatus, teres minor and subscapularis.', '<b>Most common dislocation?</b> Anterior-inferior.', '<b>Nerve endangered in dislocation?</b> Axillary nerve.'])] story += [PageBreak(),section_title('References'),P('1. Drake RL, Vogl W, Mitchell AWM. <i>Gray\'s Anatomy for Students</i>. 5th ed. Elsevier. Glenohumeral joint, pp. 825-829. Figures reproduced from the textbook library: Figs. 7.25, 7.27 and 7.28.'),P('2. TeachMeAnatomy. <i>The Shoulder Joint: Structure and Movement</i>. Used as a supplementary web reference for the overview of capsule, bursae, supply and clinical relevance. Accessed 30 September 2026.'),P('This note is for educational revision and does not replace prescribed dissection manuals or departmental teaching material.','Smallx')] doc.build(story,onFirstPage=footer,onLaterPages=footer) print(out,os.path.getsize(out)) PY python - <<'PY' from pypdf import PdfReader p='/tmp/workspace/shoulder-joint-reference/output/Shoulder_Joint_Anatomy_1st_Year_MBBS.pdf' r=PdfReader(p) print('pages',len(r.pages)) for i,pag in enumerate(r.pages): t=pag.extract_text() or '' print(i+1,len(t),t[:60].replace('\n',' | ')) PY

~/shoulder-joint-reference/output/