Osgood-Schlatter disease ( OSD )

Osgood-Schlatter disease, often abbreviated as OSD, is a common condition that affects adolescents, primarily during their growth and active sports years. This condition is characterized by the emergence of anterior knee pain, and it typically follows a self-limiting course. The underlying mechanism of OSD is attributed to repetitive strain experienced by the patellar tendon as it attaches to the developing tibial tuberosity.

As adolescents engage in various physical activities, especially those involving running, jumping, and frequent knee flexion, the patellar tendon repeatedly tugs at the growing tibial tuberosity. This repetitive stress at the point of tendon insertion can lead to inflammation and discomfort, resulting in the characteristic symptoms of OSD.