Patella

Os patellae

The patella is a triangular sesamoid bone with a broad superior base and a pointed inferior apex. Its posterior surface articulates with the patellar surface of the femur. The anterior surface is roughened for the quadriceps tendon attachment.

Type Bone
Body System Skeletal
Body Region Thigh
Latin Name Os patellae
FMA ID 24485

Function

The largest sesamoid bone in the body, embedded within the quadriceps tendon. Increases the mechanical advantage of the quadriceps muscle by increasing the lever arm for knee extension.

Clinical Significance

Patellar fractures result from direct trauma or forceful quadriceps contraction. Patellar dislocation typically occurs laterally. Chondromalacia patellae (runner's knee) causes anterior knee pain from cartilage degeneration.

Frequently Asked Questions

What is the Patella?
The patella is a triangular sesamoid bone with a broad superior base and a pointed inferior apex. Its posterior surface articulates with the patellar surface of the femur. The anterior surface is roughened for the quadriceps tendon attachment.
What is the function of the Patella?
The largest sesamoid bone in the body, embedded within the quadriceps tendon. Increases the mechanical advantage of the quadriceps muscle by increasing the lever arm for knee extension.
What body system is the Patella part of?
The Patella is part of the Skeletal.
What conditions affect the Patella?
Patellar fractures result from direct trauma or forceful quadriceps contraction. Patellar dislocation typically occurs laterally. Chondromalacia patellae (runner's knee) causes anterior knee pain from cartilage degeneration.
Where is the Patella located?
The Patella is located in the Thigh region of the body.

Related Structures

articular surface articular system joint system articulation joint Atlas (C1) Atlas attachment site axial skeleton plus cranial skeleton skeleton axiale Axis (C2) Axis bone collagen fibril

Medical Disclaimer

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