Patella is the largest sesamoid bone of the body
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It is a flat, rounded triangular bone which articulates with the femur (thigh bone) and covers and protects the anterior articular surface of the knee joint.
Babies are born with a patella of soft cartilage which begins to ossify into bone at about four years of age.
Anatomical point
1. pointed apex is directed downward
2. anaterior surface is convex
3 posterior surface bears two facet lateral facet is larger than the medial facet
it is located Within the quadriceps tendon, anterior to the knee joint
The patella (kneecap) is located at the front of the knee joint, within the patellofemoral groove of the femur. Its superior aspect is attached to the quadriceps tendon and inferior aspect to the patellar ligament.
Attachment : The apex of the patella is situated inferiorly and is connected to the tibial tuberosity by the patellar ligament. The base forms the superior aspect of the bone and provides the attachment area for the quadriceps tendon.
patella helps knee extension, allows for smooth movement during knee flexion/extension, protects the anterior surface of the knee joint
The patellofemoral joint is where the back of your patella (kneecap) and femur (thigh bone) meet at the front of your knee.
It's involved in climbing, walking on an incline, and several other knee movements.
It's also the joint affected by a common injury called "runner's knee.
Ossification. The patella is ossified from a single center,
which usually makes its appearance in the second or third year,
but may be delayed until the sixth year. More rarely, the bone is developed by two centers, placed side by side.
Ossification is completed about the age of puberty.
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