Bassett Collection Large Image - Lane Medical Library, Stanford University Medical Center

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Volar aspect of right hand

Digital tendon sheaths

The sheath has been cut away from the fourth finger and the flexor tendons have been elevated slightly.

1 .	Deep transverse metacarpal ligament
2 .	Ligament of digital sheath
3 .	Extensor expansion of third finger
4 .	Annular ligament of finger (part of sheath ligament)
5 .	Digital cruciate ligament (part of sheath ligament)
6 .	Phalanx III (periosteum removed)
7 .	Lumbrical muscles
8 .	Accessory slip of lumbrical muscle III
9 .	Accessory slip of lumbrical muscle IV
10 .	Flexor digitorum superficialis (tendon of insertion)
11 .	Flexor digitorum profundus muscle (tendon of insertion)