Abstract
The patella is the largest sesamoid bone in the body and serves the following six basic functions1:
-
1.
Increases the moment arm of the quadriceps mechanism, improving the force of extension 25% to 30%.
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2.
By cartilage-to-cartilage articulation, a low coefficient of friction is established, improving quadriceps efficiency.
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3.
The divergent forces of the four heads of the quadriceps are centralized and there-fore are transmitted to the patellar tendon.
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4.
Protects the quadriceps and patellar tendon from friction.
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5.
Shields the articular cartilage on the anterior tibia as well as the anterior femur.
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6.
Serves a cosmetic function.
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Cushner, F.D., Scott, W.N. (1995). Arthroscopic Examination and Treatment of the Patellofemoral Joint. In: Scuderi, G.R. (eds) The Patella. Springer, New York, NY. https://doi.org/10.1007/978-1-4612-4188-1_10
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DOI: https://doi.org/10.1007/978-1-4612-4188-1_10
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