A synovial sheath is one of the two membranes of a
tendon sheath
A tendon sheath is a layer of synovial membrane around a tendon. It permits the tendon to stretch and not adhere to the surrounding fascia.
It has two layers:
* synovial sheath
A synovial sheath is one of the two membranes of a tendon sheath wh ...
which covers a tendon. The other membrane is the outer fibrous tendon sheath.
eMedicine/Stedman Medical Dictionary Lookup!
/ref> The tendon invaginates the synovial sheath from one side so that the tendon is suspended from the membrane by the mesotendon, through which the blood vessels reach the tendon, in places where the range of movement is extensive. The mesotendon disappears or remains in the form of narrow tendinous bands as threads known as vincula tendina
Within each osseo-aponeurotic canal, the tendons of the flexor digitorum superficialis and flexor digitorum profundus are connected to each other, and to the phalanges, by slender, tendinous bands, called vincula tendina.
Structure
There are a ...
.
The synovial sheath is found where the tendon passes under ligaments and through osseofibrous tunnels; their function is to reduce friction between the tendon and their surrounding structure.
An example is the common synovial sheath for the flexor tendons of the hand.
See also
* Synovial membrane
The synovial membrane (also known as the synovial stratum, synovium or stratum synoviale) is a specialized connective tissue that lines the inner surface of capsules of synovial joints and tendon sheath. It makes direct contact with the fibrous ...
References
Upper limb anatomy
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