Abstract
Background The concentrated platelets found in Platelet Rich Plasma (PRP) include growth factors among the huge reservoirs of bioactive proteins that are vital to initiate and accelerate tissue repair and regeneration.
Objectives To evaluate the assess the duration of effectiveness of 4 intra-articular injection: two infiltration of platelet gel followed by two ultrasound guided infiltration of hyaluronic acid under ultrasound (US) guidance in symptomatic osteoarthritis of the hip.
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