In some instances avulsion of a finger is effected in a peculiar
manner. In 1886 Anche reported to his confreres in Bordeaux a
rare accident of this nature that occurred to a carpenter. The
man's finger was caught between a rope and the block of a pulley.
By a sudden and violent movement on his part he disengaged the
hand but left the 3d finger attached to the pulley. At first
examination the wound looked like that of an ordinary amputation
by the usual oval incision; from the center of the wound the
proximal fragment of the 1st phalanx projected. Polaillon has
collected 42 similar instances, in none of which, however, was
the severance complete.
It occasionally happens that in avulsion of the finger an entire
tendon is stripped up and torn off with the detached member.
Vogel describes an instance of this nature, in which the long
flexor of the thumb was torn off with that digit. In the Surgical
Museum at Edinburgh there is preserved a thumb and part of the
flexor longus pollicis attached, which were avulsed
simultaneously. Nunnely has seen the little finger together with
the tendon and body of the longer flexor muscle avulsed by
machinery. Stone details the description of the case of a boy
named Lowry, whose left thumb was caught between rapidly twisting
strands of a rope, and the last phalanx, the neighboring soft
parts, and also the entire tendon of the flexor longus pollicis
were instantly torn away.
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