Hit or Miss: Antibiotic Delivery to Foal Joints

Send us Fan Mail Septic arthritis in a neonatal foal is one of those diagnoses that can change everything fast: the foal’s comfort today, survival to discharge, and even long-term athletic soundness once cartilage gets damaged early. We sit down with Dr. David Wallace to unpack why these cases are so high-stakes, how septic joints in neonates often tie back to systemic infection, and why “treat the joint” is never the whole story when you’re managing sepsis, failure of passive transfer, and fragile physiology all at once. From there we get practical about amikacin dosing and IV regional limb perfusion (IVRLP). We dig into where therapeutic targets come from in the first place, including MIC guidance and how that translates into real plasma concentrations and synovial fluid concentrations for susceptible versus resistant pathogens. We also talk through why foals are not small horses, how disease can change aminoglycoside behavior, and what that means for peak goals, trough expectations, and redosing intervals that may drift beyond a neat every-24-hours schedule. We also break down what the research shows when you compare cephalic versus saphenous injection sites and why some joints may hit targets while others lag behind. Technique details matter here: tourniquet fit, perfusate volume, limb anatomy, and simple variability between patients. The big clinical takeaway is to monitor the foal in front of you, recheck when needed, and be ready to pivot with lavage, intra-articular therapy, or a different plan if response is not trending the right way. If you find value in evidence-based equine medicine and real-world dosing decisions, subscribe, share this with a colleague, and leave us a rating and review wherever you listen. JAVMA article: https://doi.org/10.2460/javma.24.10.0678 INTERESTED IN SUBMITTING YOUR MANUSCRIPT TO JAVMA ®  OR AJVR ® ? JAVMA ® : https://avma.org/JAVMAAuthors AJVR ® : https://avma.org/AJVRAuthors FOLLOW US: JAVMA ® : Facebook: Journal of the American Veterinary Medical Association - JAVMA | Facebook Instagram: JAVMA (@avma_javma) • Instagram photos and videos Twitter: JAVMA (@AVMAJAVMA) / Twitter   AJVR ® :  Facebook: American Journal of Veterinary Research - AJVR | Facebook Instagram: AJVR (@ajvroa) • Instagram photos and videos Twitter: AJVR (@AJVROA) / Twitter JAVMA ®  and AJVR ®  LinkedIn: https://linkedin.com/company/avma-journals