Hoffa's syndrome, also known as infrapatellar fat pad syndrome, is a condition causing anterior knee pain due to inflammation or damage of the Hoffa's fat pad during knee extension, often resulting from repetitive trauma or hyperextension sports. Common symptoms include pain during activities like stair negotiation, reduced range of motion, and possible effusion. Diagnosis is typically confirmed through MRI, and treatment focuses on pain relief and inflammation reduction through rest, physiotherapy, and strengthening exercises.