Which of the following is NOT a symptom of Osgood-Schlatter disease?

Osgood-Schlatter disease primarily affects adolescents experiencing growth spurts, especially those active in sports. It is characterized by pain and tenderness around the knee joint, specifically over the tibial tuberosity, which is the area where the patellar tendon attaches to the tibia.

Knee pain is one of the hallmark symptoms of Osgood-Schlatter disease as the condition arises from repetitive stress and irritation of the growth plate due to activities such as running and jumping. Inflammation around the knee is also a common symptom, often leading to tenderness and discomfort. Additionally, swelling over the tibial tuberosity is frequently observed as part of the body's response to the stress placed on this area.

Foot drop, which is the inability to lift the front part of the foot, is not associated with Osgood-Schlatter disease. This condition is typically due to neurological or muscular issues, involving the peroneal nerve or related muscles, rather than the localized knee pain and inflammation characteristic of Osgood-Schlatter disease. Therefore, it accurately reflects a symptom that does not fit within the typical clinical picture of this specific knee condition.