Patellar Tendinitis, also known as patellar tendonitis, is related to tendinitis and gout. An important gene associated with Patellar Tendinitis is COA1 (Cytochrome C Oxidase Assembly Factor 1), and among its related pathways/superpathways are Extracellular matrix organization and Cytoskeleton remodeling Regulation of actin cytoskeleton by Rho GTPases. Affiliated tissues include bone.