Anatomy Of The Patella

The base is also what attaches to the quadriceps tendon. The patella is a sesamoid bone roughly triangular in shape with the apex of the patella facing downwards.

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3 in being composed mainly of dense cancellous tissue.

Anatomy of the patella. The kneecap is lined with cartilage which is actually the thickest cartilage in the whole body due to the massive forces that go through it eg. Tendons connect the knee bones to the leg muscles that move the knee. The apex or point of the patella points downward towards the shin while the base of the bone sits upward towards the thigh.

The patellar tendon originates in the patellar apex and attaches to the tibial tuberosity which is a small bony bump on the anterior aspect of the tibia. It is usually regarded as a sesamoid bone developed in the tendon of the Quadriceps femoris and resembles these bones 1 in being developed in a tendon. The patella is a dense trabecular bone with a thin compact lamina coveing it.

The patella is a large sesamoid a bone within a tendon bone with a triangular transverse cross-section that lies within the quadriceps tendon. It is a small freestanding bone that rests between the femur thighbone and tibia shinbone. Described in more detail in the section that follows the patella is invested in the retinacular layer of the extensor mechanism receiving direct insertion of the deeper layer of the patellar tendon distally and the vastus intermedius proximally.

The smaller bone that runs alongside the tibia fibula and the kneecap patella are the other bones that make the knee joint. The morphology of the attachment of the patellar tendon its bundle orientation the differential fascicles length and the position of the apex of the patella were assessed in 22 cadaveric human knees. 2 in its center of ossification presenting a knotty or tuberculated outline.

The patella is a thick flat triangular bone with its apex pointing downwards. Learn vocabulary terms and more with flashcards games and other study tools. The patellar apex was 39-6 of the width of the tendon from its medial edge.

The patella is incorporated in the tendon of the quadriceps femoris muscle and remarkably reduces its friction over the femurs patellar surface during active extension of the lower leg protecting both the tendon of quadriceps and the cartilage of the thigh bone 1. The patella has a triangular shape with anterior and posterior surfaces. The apex is the most inferior lowest part of the patella.

The tendon of the quadriceps femoris muscle attaches to the base of the patella with the vastus intermedius attaching to the base itself while the vastus lateralis and vastus medialis attach to the outer and medial borders of the patella respectively. This was a late development compared with the cruciates or the condylar surfaces. The apex of the patella is situated inferiorly and is connected to the tibial tuberosity by the patellar ligament.

The patella is commonly referred to as the kneecap. The force going through the kneecap when coming downstairs is 35x body weight. The patella is the largest sesamoid bone in the body.

The anterior femoral articular surface extended proximally beneath the patella to form the sulcus and completed the development of the patellofemoral joint Figure 22. Anatomists classify it as a sesamoid bone which is often considered a subcategory of short bones and it is the. The osseous patella developed separately in birds some reptiles and in mammals about 70 million years ago.

The base forms the superior aspect of the bone and provides the attachment area for the quadriceps tendon. In its whole complete form the patella is a flat triangular-shaped bone that is fairly dense. It is pointed in shape and gives attachment to the patellar ligament.

Another example of a sesamoid bone is the pisiform carpal bone that lies within the tendon of flexor carpi ulnaris. We performed an anatomic cadaveric study evaluating the extra-osseous vascular anatomy of the patella and correlated our findings to routine TKA surgical dissection to determine how to better preserve patellar vascularity. In this anatomy lesson Im going to cover the patella bone also known as the kneecap.

The base of the patella is the broad superior border of the bone. The femur has a dedicated groove along which the. The bulk of tendon was attached to the distal two-thirds of the.

The proximal three-quarters of the posterior surface is smooth composed of articular cartilage which is the thickest in the body as much as 5 mm in some adults. The patella bone is part of the appendicular skeleton and it gets its name from a Latin word that means shallow pan or dish. 255 256 is a flat triangular bone situated on the front of the knee-joint.

The patella is a small triangular bone which sits in the quadriceps muscle at the front of the knee. The patellar tendon is technically not named correctly. Start studying Anatomy of the Patella.

In twenty-one cadaveric knees arterial cannulas were placed proximally and distally to the patella. The bone has a medial and lateral border as well as its base which lies proximally. The patella is triangular in shape with a superior base and inferior apex.

The front and back surfaces are joined by a thin margin and towards centre by a thicker margin.

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