Osgood-Schlatter disease (also known as tibial tubercle apophyseal traction injury) is an inflammation of the growth plate at the tibial tuberosity, and is one of a group of conditions collectively called osteochondroses. The condition is caused by stress on the patellar tendon that attaches the quadriceps muscle at the front of the thigh to the tibial tuberosity. Following an adolescent growth spurt, repeated stress from contraction of the quadriceps is transmitted through the patellar tendon to the immature tibial tuberosity. This can cause multiple subacute avulsion fractures along with inflammation of the tendon, leading to excess bone growth in the tuberosity and producing a visible lump.
Pain and swelling directly over the tibial tubercle is most common. Point tenderness is noted on examination.
Pain is aggravated by loaded knee extension activity, especially activity with power or impact characteristics. Symptoms may occur with activities of daily living (ADLs) such as walking and using stairs.
The symptoms usually resolve with treatment but may recur as a new episodes until skeletal maturity, when the tibial epiphysis fuses.
Osgood-Schlatter Disease - Osgood-Schlatter (say: "oz-good shlot-ter") disease is one of the most common causes of knee pain in young athletes. It causes swelling, pain and tenderness just below the knee, over the shin bone (also called the tibia). It occurs mostly in boys who are having a growth spurt during their pre-teen or teenage years. One or both knees may be affected.