Volar aspect of right hand

Digital tendon sheaths

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Image #103-6

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)