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Bursa of the knee joint
From Wikipedia, the free encyclopedia
(Redirected from Bursae of knee-joint)
| Bursa of the knee joint | |
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| Sagittal section of right knee-joint, thus showing only frontal bursae. | |
| Gray's | subject #93 345 |
The bursae near the knee-joint are the following:
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In front there are four bursæ:
- a large one is interposed between the patella and the skin, called the prepatellar bursa,
- a small one between the upper part of the tibia and the ligamentum patellæ,
- a third between the lower part of the tuberosity of the tibia and the skin,
- and a fourth between the anterior surface of the lower part of the femur and the deep surface of the Quadriceps femoris, usually communicating with the knee-joint, called the suprapatellar bursa [1].
Laterally there are four bursæ:
- (1) one (which sometimes communicates with the joint) between the lateral head of the Gastrocnemius and the capsule;
- (2) one between the fibular collateral ligament and the tendon of the Biceps;
- (3) one between the fibular collateral ligament and the tendon of the Popliteus (this is sometimes only an expansion from the next bursa);
- (4) one between the tendon of the Popliteus and the lateral condyle of the femur, usually an extension from the synovial membrane of the joint.
Medially, there are five bursæ:
- (1) one between the medial head of the Gastrocnemius and the capsule. This sends a prolongation between the tendon of the medial head of the Gastrocnemius and the tendon of the Semimembranosus and often communicates with the joint. It is also calles the suprapateallar bursa.
- (2) one superficial to the tibial collateral ligament, between it and the tendons of the Sartorius, Gracilis, and Semitendinosus;
- (3) one deep to the tibial collateral ligament, between it and the tendon of the Semimembranosus (this is sometimes only an expansion from the next bursa);
- (4) one between the tendon of the Semimembranosus and the head of the tibia;
- (5) occasionally there is a bursa between the tendons of the Semimembranosus and Semitendinosus.
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.
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