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#Monteggia_fracture_Dislocation AP view

#TOS

Q: Write short notes on Thoracic Outlet Syndrome (TOS) under the following headings: definition, pathophysiology, classification, clinical features, investigations, and management. 🟨 1. Definition: Thoracic Outlet Syndrome (TOS) is a condition caused by compression of the neurovascular bundle (brachial plexus, subclavian artery, or vein) at the thoracic outlet, usually between the anterior and middle scalene muscles. 🟨 2. Pathophysiology: 🔹Compression may involve: 💟 Brachial plexus → neurological symptoms 💟 Subclavian artery → arterial insufficiency 💟 Subclavian vein → venous obstruction Occurs at three anatomical spaces in the thoracic outlet. 🔹Symptoms depend on: 🔥 Degree of compression 🔥 Duration 🔥 Frequency of compression 🟨 3. Classification: 💟 Neurogenic TOS (most common) 💟 Arterial TOS 💟 Venous TOS 🟨 4. Clinical Features: ♥ General features: ☆Age: 20–50 years ☆More common in females ☆Usually unilateral ♥ Symptoms: ★Pain, paresthesia, weakness in upper limb ★Shoulder and arm discomfort ★Worsened by: 💟 Overhead activity 💟 Carrying heavy objects 💟 Poor posture 💟 Prolonged positioning 🟨Type-specific features: 💟 Neurogenic TOS: ★Pain + tingling + weakness ★Neck pain, occipital headache ★Coldness and color changes (Raynaud-like) 💟 Arterial TOS: ★Ischemia: pallor, coldness, claudication ★Reduced or absent pulses 💟 Venous TOS: ♦ Arm swelling (most important sign) Cyanosis ♦Dilated superficial veins 🟨 5. Causes / Mechanism: ♥ Traumatic: whiplash, fractures ♥ Congenital: cervical rib, abnormal C7 transverse process ♥ Postural causes ♥ Repetitive strain / overuse 🟨6. Investigations: ★ X-ray (neck/chest): cervical rib, bony abnormalities ★ EMG / nerve conduction studies: ulnar neuropathy ★ Diagnosis mainly clinical (history + examination) 💟 7. Special Tests: ♥ Adson’s test → ↓ radial pulse ♥ EAST (Roos test) → pain/paresthesia ♥ Costoclavicular maneuver → pulse changes ♥ Hyperabduction test → ↓ pulse 🟨 8. Management: ♥ A. Conservative (first line): ★Postural correction exercises ★Physiotherapy ★Avoid aggravating activities ★Analgesics ± muscle relaxants ♥ B. Surgical (definitive): For severe or resistant cases: ★ First rib resection ★ Scalenectomy ★ Vascular reconstruction (if needed)

🟪Thoracic Outlet Syndrome (TOS)🟪 ❇️Definition GROUP OF NEUROLOGIC AND VASCULAR SYMPTOMS OF THE UPPER EXTREMITY CAUSED BY COMPRESSION OF THE BRACHIAL PLEXUS AND THE SUBCLAVIAN VESSELS BY BONY OR SOFT TISSUE ANOMALIES AS THEY TRAVERSE THE THORASIC OUTLET REGION AT THE BASE OF THE NECK. ❇️Types: 🛑Neurogenic TOS (most common ~95%) → compression of Brachial plexus 🛑Venous TOS (~4%) → compression of subclavian vein → thrombosis 🛑Arterial TOS (~1%) → compression of subclavian artery → ischemia ❇️ Etiology / Causes 🌐Congenital / Anatomical 🟡Cervical rib (extra rib) 🟡Abnormal 1st rib or scalene muscle hypertrophy 🌐Acquired / Postural ▫️Trauma (clavicle fracture, whiplash) ▫️Repetitive overhead activity (athletes, manual labor) ▫️Posture: rounded shoulders, drooped scapula ❇️ Pathophysiology ➡️Compression at 3 possible sites: 🌹Interscalene triangle → between anterior & middle scalene + 1st rib 🌹Costoclavicular space → clavicle & 1st rib 🌹Subcoracoid (retropectoralis minor) space → under pectoralis minor tendon ➡️Consequence: 📒Neurogenic TOS → paresthesia, weakness, atrophy of hand muscles 📒Venous TOS → swelling, cyanosis, thrombosis 📒Arterial TOS → ischemia, cold hand, claudication ❇️ Clinical Features 🔹 Neurogenic TOS 🔅Pain, numbness, tingling → C8-T1 distribution 🔅Weakness → grip, intrinsic hand muscles (atrophy of thenar & hypothenar eminence) 🔅Positives tests: ♥Adson’s test → radial pulse ↓ with neck rotation & inspiration ♥Roos/Elevated arm stress test → reproduces symptoms 🔹 Venous TOS (Paget-Schroetter syndrome) ★Swelling, cyanosis, heaviness of arm ★Dilated superficial veins Often in young athletes 🔹 Arterial TOS ☆Cold, pale hand, decreased pulses ☆Pain during activity (claudication) Rare, usually with cervical rib ❇️Diagnosis ♤Clinical → high suspicion ♤Imaging / Tests: ♤X-ray → cervical rib, clavicle fracture ♤CT / MRI → soft tissue compression ♤Doppler US / Venography / Arteriography → vascular TOS ♤Electromyography → neurogenic TOS ❇️ Management 🔹 Conservative (First-line for neurogenic) Physical therapy → posture correction, shoulder strengthening, scalene stretches Avoid overhead activity Analgesics / NSAIDs for pain 🔹 Surgical (Indications) Persistent symptoms despite conservative therapy Vascular TOS (arterial / venous) Cervical rib / bone anomaly causing compression Common procedures: First rib resection + scalenectomy Clavicle resection (rare) Venous thrombectomy / bypass if venous TOS with thrombosis ➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️❇️❇️❇️❇️❇️❇️❇️✳️✳️✳️✳️✳️✳️✳️✳️ 🛑🛑Clinical Tips ★Neurogenic TOS → most common, but often subtle → high suspicion in young adults with chronic arm pain/weakness ★Venous TOS → think in athletes with sudden arm swelling ★Arterial TOS → look for cold, pale hand with diminished pulses 🛑🛑Clinical Pearls 💎 ★Cervical rib is a red flag → always check X-ray ★Adson’s test not 100% specific → combine with other maneuvers ★Neurogenic TOS → may mimic carpal tunnel or cervical radiculopathy 🛑🛑 MCQ Focus 🔥 ★Most common type → Neurogenic (~95%) ★Compression site → Interscalene triangle ★Positive tests → Adson, Roos, Wright ★Classic presentation → paresthesia + hand weakness + pain ★Young athlete + sudden arm swelling → Venous TOS 🛑🛑MCQ Traps ⚠️ ★Arterial TOS is RARE, don’t overestimate prevalence ★Neurogenic TOS → often normal pulses ★Positive Adson’s test alone ≠ diagnosis 🛑🛑 Quick Summary 🎯 ★TOS = compression at thoracic outlet → neurogenic (95%), venous (4%), arterial (1%) ★Symptoms depend on structure compressed ★Diagnosis → clinical + imaging ★Management → PT for neurogenic, surgery for vascular / failed conservative.

🧩Mnemonics Esophageal cancer; Etiologic Factors 🇮🇷PERSIAN GULF 🌊🌴 🥇Papillomavirus(HPV), Prior gastrectomy, Poor oral hygiene 🥇Epidermal growth factor polymorphisms 🥇Raised BMI(Obesity) 🥇Smoking, Socioeconomic factors and Demographic 🥇Intake(dietry factors), Infection with Helicobacter pylori, Inherited type of tylosis (Howell-Evans syndrome) 🥇Alcohol, Alendronate(oral bisphosphonates), Atrophic gastritis, Acid hypersecretory states(ZES) 🥇Nitrosative stress 🥇GERD 🥇Upper aerodigestive tract cancer, Underlying esophageal disease(achalasia, stricture) 🥇LES pressure decrease 🥇Familial(Hereditary factors; PJS) #surgery #gastroenterology 〰〰〰〰〰〰〰〰〰〰〰 ©

#Catheters

📎𝐏𝐬𝐨𝐚𝐬 𝐀𝐛𝐬𝐜𝐞𝐬𝐬 🟣Definition - Collection of pus within the iliopsoas compartment. 🟣Causes / Spread - Hematogenous spread - Spread from adjacent structures: - Vertebral osteomyelitis - Tuberculous spondylitis (Pott disease) - Pyelonephritis 🟣Risk Factors - Crohn disease - Diabetes mellitus - Immunocompromised states 🟣Causative Organisms - Staphylococcus aureus — most common - Mycobacterium tuberculosis — can also cause it 🟣Clinical Findings - Flank pain - Fever - Inguinal mass - Positive psoas sign: hip extension → exacerbates lower abdominal pain 🟣Labs - Leukocytosis 🟣Imaging - CT/MRI: focal hypodense lesion within the muscle plane 🟣Treatment - Abscess drainage - Antibiotics

♦Intussusception 🔴Definition Telescoping of one part of the intestine into an adjacent part. Most common: ileum into cecum = "ileocolic". 🔴Who gets it - Peak age: 6 months to 3 years. Most common cause of intestinal obstruction in infants - Adults: Rare. Usually has a lead point like tumor, polyp, Meckel's 🔴Cause - Idiopathic 90% in kids: Often after viral gastroenteritis. Lymphoid hyperplasia acts as lead point - Pathological lead point: Meckel diverticulum, polyp, tumor, Henoch-Schonlein purpura, cystic fibrosis - No lead point found in most infants 🔴Classic triad in infants 1. Colicky abdominal pain: Sudden crying, draws up legs, then appears normal between episodes 2. Vomiting*: Bilious if late 3. "Currant jelly" stool: Blood + mucus. Late sign Other signs - Palpable "sausage-shaped" mass in RUQ, often with empty RLQ = Dance sign - Lethargy between episodes - Can progress to obstruction, ischemia, perforation 🔴Diagnosis - Ultrasound: Target sign / doughnut sign on transverse view. First line in kids - Air contrast enema: Both diagnostic + therapeutic - X-ray: May show obstruction, but non-specific 🔴Treatment 1. Non-operative: Air or barium enema reduction. Works ∼70-80% in uncomplicated cases without signs of perforation 2. Surgical: If reduction fails, perforation, peritonitis, or lead point suspected. 3- Laparoscopic/open reduction ± bowel resection. 🔴Complications 1- Bowel ischemia 2- necrosis 3- perforation 4- recurrence ∼10% 🔴Prognosis Good if treated early. Delay increases risk of surgery and bowel loss.