Lecture 6 - Anatomy of the Anterolateral Abdominal Wall and Inguinal Region
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Transcript of Lecture 6 - Anatomy of the Anterolateral Abdominal Wall and Inguinal Region
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8/9/2019 Lecture 6 - Anatomy of the Anterolateral Abdominal Wall and Inguinal Region
1/23
LECTURE 6
ANATOMY OF THE ANTEROLATERAL ABDOMINAL WALL AND INGUINALREGION DR CARL PARSONS
NOTE: these notes ae !o" Ga#$s Anato"# an% ae "oe &o"'ehens()e than Pason$s
REGIONAL ANATOMY
Fo* +*a%ants
N(ne +*a%ants
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8/9/2019 Lecture 6 - Anatomy of the Anterolateral Abdominal Wall and Inguinal Region
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ABDOMINAL WALL
Bo*n%a(es:
S*'e(o,# -# .('ho(% 'o&ess an% &osta, "a/(ns
Poste(o,# -# )ete-a, &o,*"n
In!e(o,# -# *''e 'ats o! 'e,)(& -one
La#es &ons(st o!:
S0(n
S*'e1&(a, !as&(a 2s*-&*taneo*s t(ss*e3
M*s&,es an% the( asso&(ate% %ee' !as&(as
E.ta'e(tonea, !as&(a
Pa(eta, 'e(tone*"
SUPERFICIAL FASCIA
A ,a#e o! !att# &onne&t()e t(ss*e4 It (s *s*a,,# a s(n/,e ,a#e s("(,a to5 an% &ont(n*o*s
(th5 the s*'e1&(a, !as&(a tho*/ho*t othe e/(ons o! the -o%#4 Hoe)e (n ,oe e/(on
o! ante(o 'at o! a-%o"(na, a,,5 -e,o *"-(,(&*s5 (t !o"s 7 ,a#es:
Superfcial atty layer
Deep membranu! layer
SUPERFICIAL FATTY LAYER
A,so 0non as "amper#! a!cia
Conta(ns atan% )a(es (n th(&0ness
In "en5 th(s s*'e1&(a, ,a#e &ont(n*es o)e 'en(s an%5 a!te ,os(n/ (ts !at an%
!*s(n/ (th %ee'e ,a#e o! s*'e1&(a, !as&(a5 &ont(n*es (nto the s&ot*" hee (t
!o"a s'e&(a,(se% !as&(a, ,a#e &onta(n(n/ s"ooth "*s&,e 1-es 2%atos !as&(a3
In o"en5 th(s s*'e1&(a, ,a#es eta(ns so"e !at an% (s a &o"'onent o! the ,a-(a
"a8oa
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8/9/2019 Lecture 6 - Anatomy of the Anterolateral Abdominal Wall and Inguinal Region
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DEEPER MEMBRANOUS LAYER
A0a Scarpa#! a!cia
T$in an% membranu!& cntainin' little t n at
In!e(o,#5 (t &ont(n*es (nto the th(/h
9*st -e,o (n/*(na, ,(/a"ent5 (t !*ses (th the %ee' !as&(a o! the th(/h
At "(%,(ne5 (t (s atta&he% to the linea alba an% pubic !ymp$y!i!
Ante(o 'at atta&he% to (s&h(o'*-(& a"( an% 'oste(o "a/(n o! the 'e(nea,
"e"-ane
Hee (t (s e!ee% to as the s*'e1&(a, 'e(nea, !as&(a 2Co,,es$ !as&(a3
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ANTEROLATERAL MUSCLES
F()e "*s&,es (n anteo,atea, /o*' o! a-%o"(na, a,, "*s&,es:
Thee at "*s&,es
o F(-es -e/(n 'osteo,atea,,#5 'ass ante(o,# an% ae e',a&e% -# an
a'one*os(s as the "*s&,e &ont(n*es toa%s the "(%,(neo E(ternal bli)ue
o Internal bli)ue
o Tran!*er!u! ab%mini!
To )et(&a, "*s&,es
o Nea "(%,(ne5 h(&h ae en&,ose% (th(n a ten%ono*s sheath !o"e% -# thea'one*oses o! the at "*s&,es
o Rectu! ab%minu!
o +yrami%ali! mu!cle!
To/ethe these "*s&,es ae &(t(&a, !o "a(ntenan&e o! "an# no"a, 'h#s(o,o/(&a,
!*n&t(onso The# !o" a 1"5 -*t e.(-,e a,, that 0ee's a-%o"(na, )(s&ea (th(n the
a-%o"(na, &a)(t#o +rtect! *i!cera rm in,ury
o He,'s "a(nta(n 'ost*e o! )(s&ea (n ee&t 'ost*e a/a(nst a&t(on o! /a)(t# Conta&t(on o! these "*s&,es ass(sts (n -oth )uiet an% rce% e(piratin2e4/4
hen e.e&(s(n/ #o* nee% to a&t()e,# '*sh a( o*t -e&a*se #o* ant to -eathe (n
!aste3 -# '*sh(n/ the )(s&ea *'a% 2h(&h he,'s '*sh the e,a.e% %(a'ha/"
!*the (nto the thoa&(& &a)(t#5 an% (n cu'$in' an% *mitin'
A,, these "*s&,es ae (n)o,)e% (n an# a&t(on that (n&eases (nta;a-%o"(na,
'ess*e5 (n&,*%(n/ &h(,%-(th5 *(nat(on an% %e!e&at(on
FLAT MUSCLES
E.tena, o-,(+*e
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8/9/2019 Lecture 6 - Anatomy of the Anterolateral Abdominal Wall and Inguinal Region
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Most s*'e1&(a, o! the < at "*s&,es (n anteo,atea, /o*' o! a-%o"(na, a,,
"*s&,es (s e(ternal bli)ue h(&h (s (""e%(ate,# %ee' to !uperfcial a!cia4
Latea,,# ',a&e% "*s&,e 1-es 'ass (n an inerme%ial%(e&t(on 2=han%s (n
'o&0ets$3
Its ,a/e a'one*ot(& &o"'onent &o)es the ante(o 'at o! a-%o"(na, a,, to
"(%,(ne A''oa&h(n/ "(%,(ne5 a'one*oses ae ent(ne%5 !o"(n/ ,(nea a,-a5 h(&h
e.ten%s !o" .('ho(% 'o&ess to '*-(& s#"'h#s(s
Loe -o%e o! e.tena, o-,(+*e a'one*os(s !o"s (n/*(na, ,(/a"ent on ea&h
s(%eo Th(s !ee e%/e o! the e.tena, o-,(+*e a'one*os(s (s th(&0ene% an%
e(n!o&e%5 an% 'asses -eteen the ante(o s*'e(o (,(a& s'(ne ,atea,,#
an% the '*-(& t*-e&,e "e%(a,,#o It !o,%s *n%e (tse,! !o"(n/ a to*/h5 h(&h has a o,e (n the !o"at(on o!
the (n/*(na, &ana,
Intena, o-,(+*e
Dee' to the e.tena, o-,(+*e "*s&,e (s the (ntena, o-,(+*e "*s&,e 27n%o! the