Patellar luxation is the dislocation of the patella. The patellar tendon connects the patella (kneecap) to the tibia (shin). Patellar luxation, also known as luxating patella, is a hereditary disorder affecting the knees. Patellar Lunation, also known as luxating patella, refers to the dislocation of the kneecap. The patella (kneecap) is the sesamoid bone in front of the knee. The patella or kneecap on each side is an example of a larger sesamoid bone. At the knee above the cnemial crest is the patella (kneecap). The tendon of the quadriceps femoris muscle attaches to the base of the patella. The patellofemoral joint refers to junction where the femur and patella meet. Each true leg has seven segments&colon; coxa, trochanter, femur, patella, tibia, metatarsus, and tarsus. People present with an ache over the patella tendon. Havanese suffer primarily from luxating patella, liver disease, heart disease, cataracts and retinal dysplasia. The most common health issues are luxating patella and tracheal collapse. Late in the year, he was diagnosed with chronic tendinitis in the patella. The primary functional role of the patella is knee extension.