02/24/2023
A case series of patients undergoing fluoroscopy tests at The Mount Sinai Hospital in New York City showed the spread of hyaluronic acid after ultrasound-guided knee injections, confirming the optimal anatomical location for the procedure.
Caroline Varlotta, physiatrist and the first author of the study explained that "the ability of intra-articular injections to provide relief in patients with knee osteoarthritis is contingent upon the accurate delivery of the injectate into the joint space."
According to the authors, fluoroscopic imaging revealed that ultrasound-guided hyaluronic acid injection into the suprapatellar recess spread throughout the tibiofemoral joint following a walking test.
Varlotta and her colleagues concluded that in the future, characteristics such as osteoarthritis severity, injectate viscosity, and the injection site should be explored to understand the injection's dispersal better.
Fluoroscopy images of knee injections to reduce pain in osteoarthritis patients have revealed for the first time how the injectate spreads within the knee in a study published online January 14 in Interventional Pain Medicine.