The tibial tubercle is a prominent bony projection located on the anterior aspect of the tibia, where the patellar ligament attaches. It is clinically significant as it serves as a key landmark for knee stability and is involved in the mechanics of the quadriceps muscle during movement. An important association is Osgood-Schlatter disease, a common condition in adolescents that results from repetitive stress on the tubercle, leading to pain and inflammation.