Kneepan n. : A roundish, flattened, sesamoid bone in the tendon in front of the knee joint; the patella; the kneecap.

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Taxonomy
Knee pain, Mayo Clinic, e-newsletter, knee, ligament, knee cap, Research, health topics, injury, Mayo Foundation, Medical Education, Free e-newsletters, Housecall, e-mail address, recipes, Mayo Clinic experts, Osgood-Schlatter disease, ligament tears.

Defination from the web:
Knee pain — Comprehensive overview covers symptoms, causes, treatment of this common joint condition. ... If you're suffering from knee pain, you're not alone. ... Or, certain medical conditions, including arthritis, gout and infection, may be at the root of your knee pain. ...