Tendons of forefinger and vincula tendina. (Vincula brevia labeled at lower left; vincula longa labeled at bottom center.)
|Latin||vincula tendinum digitorum manus|
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. There are two sets of these:
- (a) the vincula brevia, which are two in number in each finger, and consist of triangular bands of fibers, one connecting the tendon of the flexor digitorum superficialis to the front of the first interphalangeal joint and head of the first phalanx, and the other the tendon of the flexor digitorum profundus to the front of the second interphalangeal joint and head of the second phalanx;
- (b) the vincula longa, one which connects the flexor digitorum superficialis to the base of the first phalanx, and the other which connects the under surfaces of the tendons of the flexor digitorum profundus to those of the subjacent flexor digitorum superficialis after the tendons of the former have passed through the latter.
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