,  which  abolishes  almost  all  power  of  raising  the
,  a  very  trifling  power  of  abduction  by  the  supra-
latus  alone  remaining.  The  slight  nerve  supply
:  the  fore  part  of  the  deltoid  receives  from  one  of
anterior  thoracic  nerves  is  insufficient  to  mitigate
effect  of  the  paralysis  of  the  circumflex,  although
lay  maintain  slight  power  of  voluntary  contraction
he  anterior  fibres,  and  this  sometimes  gives  rise
,n  erroneous  impression  that  the  paralysis  of  the
umflex  nerve  is  incomplete.  The  effect  of  the
:y  of  the  teres  minor  is  unimportant.  The  wasting  of  the  deltoid  causes
hange  in  the  shape  of  the  shoulder.  Sensation  may  be  lost  in  the  skin
r  the  lower  part  of  the  muscle,  and  the  loss  sometimes  extends  on  to  the
6


Disease  of  the  circumflex
nerve  from  pressure  neu-
ritis during  acute  illness ;
wasting  of  deltoid.  The
dotted  line  indicates  the
area  of  cutaneous  anses-
thesia.
90  SPINAL    NERVES.
