Paediatrics: Patellar Subluxation: Free MSRA Podcast

⚕️ FREE MSRA PODCAST – Patellar Subluxation🎧 A clear, high-yield breakdown of this common paediatric knee instability – perfect for exam prep and real-life clinical scenarios.🧠 Key Learning Points📌 Definition• Patellar subluxation is a partial dislocation of the kneecap (patella) from its normal position in the trochlear groove of the femur, often slipping out and then relocating spontaneously.📌 Causes & Risk Factors• Anatomical variations (e.g. shallow trochlear groove, high-riding patella)• Ligamentous laxity (loose ligaments)• Muscle weakness or imbalance (especially quadriceps, hip abductors)• Previous history of patellar instability or trauma• More common in females and adolescentsMnemonic: “S.L.A.P.” – Structure, Laxity, Activity (twisting sports), Previous history📌 Pathophysiology• Abnormal patellar tracking due to anatomical or muscular factors leads to the patella slipping partially out of its groove during movement, especially when twisting or changing direction.📌 Symptoms• Acute knee pain at the front of the knee• Sensation of the knee “giving way” or instability• Swelling and possible audible “pop” during the event• Visible abnormal movement of the kneecap (sometimes)Mnemonic: “PAIN POP SWELL” – Pain, Pop, Swelling, Wobbly/weak knee📌 Differential Diagnosis• Patellar dislocation (complete)• Ligament injuries (e.g. ACL, PCL)• Meniscal tear• Osteochondral defect• Osgood-Schlatter disease📌 Diagnosis• Clinical history and examination (instability, apprehension, swelling)• X-ray (to check bone structure and patella alignment)• MRI (for soft tissue and cartilage injuries, trochlear morphology)Memory Tip: “X-ray for bone, MRI for soft tissue”📌 Management• Initial rest and immobilisation (brace if needed)• Early physiotherapy focusing on quadriceps and hip strengthening (especially VMO)• Bracing or taping for support during activity• Surgery only for recurrent or severe instability• Refer to orthopaedics if recurrent episodes or failed conservative management• Always individualise management to the child’s activity level and age📌 Complications• Recurrent patellar subluxation• Chronic pain and instability• Degenerative joint changes/early osteoarthritis📌 Prognosis• Most children recover well with proper physiotherapy and conservative management; surgery may be needed for persistent instability.📎 More MSRA Resources for Patellar Subluxation📝 Revision Notes: https://www.passthemsra.com/topic/patellar-subluxation-revision-notes/🧠 Flashcards: https://www.passthemsra.com/topic/patellar-subluxation-flashcards/💬 Accordion Q&A Notes: https://www.passthemsra.com/topic/patellar-subluxation-accordion-qa-notes/🚀 Rapid Quiz: https://www.passthemsra.com/topic/patellar-subluxation-rapid-quiz/🎓 Full Course: https://www.passthemsra.com/courses/paediatrics-for-the-msra/#MSRA #MSRARevision #MSRATextbook #MSRAQuiz #MSRAQuestionBank #MSRAFlashcards #MSRAQ&ANotes #MSRAAccordions #MultiSpecialityRecruitmentAssessment #MSRAOnlineRevision #MSRARevisionWebsite #PatellarSubluxation