Quadriceps tendon

Quadriceps tendon
	Right knee
Details
Location	Front of the knee
Origin	All four quadriceps muscles
Insertion	patella
Articulations	extends the lower leg
Identifiers
Latin	tendo quadriceps
	Anatomical terminology

In human anatomy, the quadriceps tendon works with the quadriceps muscle to extend the leg. All four parts of the quadriceps muscle attach to the shin via the patella (knee cap), where the quadriceps tendon becomes the patellar ligament. It attaches the quadriceps to the top of the petella, which in turn is connected to the shin from its bottom by the patellar ligament. A tendon connects muscle to bone, while a ligament connects bone to bone.[1]

Injuries are common to this tendon, with tears, either partial or complete, being the most common. If the quadriceps tendon is completely torn, surgery will be required to regain function of the knee.[2] Without the quadriceps tendon, the knee cannot extend. Often, when the tendon is completely torn, part of the kneecap bone will break off with the tendon as well.[2] It can rupture resulting in quadriceps tendon rupture.[3]

It has been studied in the analysis of patellofemoral pain syndrome.[4]

References

Saladin, Kenneth S. Anatomy & Physiology: The Unity of Form and Function. 6th ed. New York: McGraw-Hill, 2012. Print.
"Patellar Tendon Tear." OrthoInfo - AAOS. American Academy of Orthopaedic Surgeons, Aug. 2009. Web. 07 Dec. 2014.
Jolles BM, Garofalo R, Gillain L, Schizas C (April 2007). "A new clinical test in diagnosing quadriceps tendon rupture". Ann R Coll Surg Engl. 89 (3): 259–61. doi:10.1308/003588407X179044. PMC 1964733. PMID 17394710.
Wilson NA, Press JM, Zhang LQ (August 2009). "In vivo strain of the medial vs. lateral quadriceps tendon in patellofemoral pain syndrome". J. Appl. Physiol. 107 (2): 422–8. doi:10.1152/japplphysiol.00024.2009. PMC 2724320. PMID 19541742.

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[1] Saladin, Kenneth S. Anatomy & Physiology: The Unity of Form and Function. 6th ed. New York: McGraw-Hill, 2012. Print.

[Patellar_Tendon_Tear_2009-2] "Patellar Tendon Tear." OrthoInfo - AAOS. American Academy of Orthopaedic Surgeons, Aug. 2009. Web. 07 Dec. 2014.

[pmid17394710-3] Jolles BM, Garofalo R, Gillain L, Schizas C (April 2007). "A new clinical test in diagnosing quadriceps tendon rupture". Ann R Coll Surg Engl. 89 (3): 259–61. doi:10.1308/003588407X179044. PMC 1964733. PMID 17394710.

[pmid19541742-4] Wilson NA, Press JM, Zhang LQ (August 2009). "In vivo strain of the medial vs. lateral quadriceps tendon in patellofemoral pain syndrome". J. Appl. Physiol. 107 (2): 422–8. doi:10.1152/japplphysiol.00024.2009. PMC 2724320. PMID 19541742.