MSK: Discitis: Free MSRA Podcast

🎧Deep Dive: Discitis —When Back Pain Isn’t Just MechanicalIn this high-yieldMSRA revision episode, we shine the spotlight on Discitis— a rare but serious spinal infection that every clinician needs to recogniseearly. Whether you’re revising for exams or brushing up on red flagpresentations, this episode breaks down the must-know essentials in a clear andmemorable format. 🧠What is Discitis?Discitis is an inflammatory condition of the intervertebral disc, most commonly due to bacterial infection (e.g. Staphylococcus aureus)It can lead to spinal instability, epidural abscess, or even sepsis if not treated promptlyWhen it spreads to adjacent vertebrae, it’s called spondylodiscitis 🔍Causes & RiskFactorsHaematogenous spread (bacteria in the bloodstream, e.g. from skin, UTI)Post-surgical infection, IV drug use, immunosuppression, diabetes, or malignancyFungal causes are rare but possible 📌Common Sites ofInfectionMost frequent in the lumbar spineLess common in cervical and rare in thoracic regions 📉EpidemiologyRare: ~2–5 cases per 100,000/yearAffects all ages but more common in males in their 50sAlso seen in children, so always keep it on your radar 📈Clinical FeaturesSevere, localised back pain (worsens with movement)Spinal stiffness, reduced mobilityFever, malaise, and in serious cases: neurological signs (e.g. limb weakness, bladder/bowel disturbance)Key red flags: unexplained back pain with fever, weight loss, or neurological change 🧪InvestigationsBlood tests: ↑ CRP, ↑ ESR (white cells may be normal!)MRI spine: Gold standard — shows disc inflammation, abscess, or bone involvementCT-guided biopsy: Confirms diagnosis and identifies organismBlood, urine, sputum cultures: To trace the sourceEchocardiogram: If concern for infective endocarditis 💊ManagementIV antibiotics for 6–8 weeks (adjusted per culture results)Spinal immobilisation: brace ± short period of bed restPain control essentialSurgical intervention if:Abscess compressing nervesSpinal instabilityFailure of medical therapyNeurological deterioration 📉Prognosis &ComplicationsGood if treated earlyBut slow recovery, risk of:Chronic back painNeurological deficitsSpinal abscessInstabilityRecurrent infectionsMortality rate ~2% 🧠Key MSRA TakeawaysAlways think discitis in back pain + fever or neurological signsMRI is diagnostic — don’t delayConfirm organism via biopsyLong IV antibiotics, brace, and only operate if there's deteriorationBe cautious not to dismiss insidious onset back pain, especially in high-risk groups 📚MSRA RevisionResources📝 Revision Notes:https://www.passthemsra.com/topic/discitis-revision-notes/🃏 Flashcards:https://www.passthemsra.com/topic/discitis-flashcards/📚 Accordion Q&A:https://www.passthemsra.com/topic/discitis-accordion-qa-notes/🎯 Rapid Quiz:https://www.passthemsra.com/topic/discitis-rapid-quiz/💡 Quiz Page:https://www.passthemsra.com/quizzes/discitis/ 🌐More MSRA Supporthttps://www.passthemsra.comhttps://www.freemsra.com#MSRA #Discitis#MSRARevision #SpinalInfection #RedFlagBackPain #MRI #StaphAureus #PassTheMSRA#FreeMSRA #MSRAQuestionBank #MSRAMSK #Spondylodiscitis #Haematology