Patellar tendon
| Patellar ligament | |
|---|---|
| File:Gray345.png Right knee-joint. Anterior view. (Ligamentum patellae visible at bottom left, below patella.) | |
| Details | |
| From | Patella |
| To | Tuberosity of the tibia |
| Identifiers | |
| Latin | ligamentum patellae |
| TA98 | Lua error in Module:Wikidata at line 746: attempt to index field 'wikibase' (a nil value). |
| TH | {{#property:P1694}} |
| TE | {{#property:P1693}} |
| FMA | {{#property:P1402}} |
| Anatomical terminology [[[d:Lua error in Module:Wikidata at line 865: attempt to index field 'wikibase' (a nil value).|edit on Wikidata]]] | |
The patellar tendon is the distal portion of the common tendon of the quadriceps femoris, which is continued from the patella to the tibial tuberosity. It is also sometimes called the patellar ligament as it forms a bone to bone connection when the patella is fully ossified.[1]
Structure
[edit | edit source]The patellar tendon is a strong, flat ligament, which originates on the apex of the patella distally and adjoining margins of the patella and the rough depression on its posterior surface; below, it inserts on the tuberosity of the tibia; its superficial fibers are continuous over the front of the patella with those of the tendon of the quadriceps femoris. It is about 4.5 cm long in adults (range from 3 to 6 cm).[2]
The medial and lateral portions of the quadriceps tendon pass down on either side of the patella to be inserted into the upper extremity of the tibia on either side of the tuberosity; these portions merge into the capsule, as stated above, forming the medial and lateral patellar retinacula.[citation needed]
The posterior surface of the patellar tendon is separated from the synovial membrane of the joint by a large infrapatellar pad of fat, and from the tibia by a bursa.[citation needed]
Clinical significance
[edit | edit source]The patellar tendon can be injured in a patellar tendon rupture. Because tendon does not regenerate fully in humans,[3] there is a significant clinical need for research into therapies for patellar tendon rupture.
It can be used as a tissue source in the repair of other ligaments. In the event of a torn anterior cruciate ligament, the patellar tendon can be used in the rehabilitation process. In this case, the middle one third of the patellar tendon is harvested and inserted through tunnels that are drilled into the femur and tibia. The portion of the patellar tendon is then drawn through these tunnels in the bone and will be affixed to the bone via screws. The recovery process takes approximately 4–6 months upon the completion of surgery.[4] This patellar tendon method of reconstruction was traditionally the gold standard graft for anterior cruciate ligament reconstruction and is still one of the more preferred methods.[5][6][7][8]
The insertion of the patellar tendon on the tibia is the location of Osgood–Schlatter disease.
See also
[edit | edit source]Additional images
[edit | edit source]-
Sagittal section of right knee-joint.
-
Capsule of right knee-joint (distended). Lateral aspect.
References
[edit | edit source]Public domain This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ MedlinePlus Encyclopedia: ACL reconstruction
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ http://www.aaos.org/news/aaosnow/apr12/cover1.asp[full citation needed][permanent dead link]
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
External links
[edit | edit source]- Anatomy figure: 15:01-04 at Human Anatomy Online, SUNY Downstate Medical Center - "Muscles of the anterior (extensor) compartment of the leg."
- lljoints at The Anatomy Lesson by Wesley Norman (Georgetown University) (antkneejointopenflexed)
Lua error in mw.title.lua at line 392: bad argument #2 to 'title.new' (unrecognized namespace name 'Portal'). Lua error in Module:Authority_control at line 153: attempt to index field 'wikibase' (a nil value).