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Anteriorregionsof
thearmandforearm
(P.306-318)
DepartmentofthehumananatomyattachedtotheSichuanUniversity
ChenDaobang
Mpartmentofarm1).bicepsbrachiiorigin:longhead—supraglenoidshort
head—coracoidprocessInsertinginto:tuberosityofradiusfunction:flexeselbowjointandshoulderjoint,supinateforearm2).coracobrachialis3).brachialisabovethe3musclesaresuppliedbymusculocutaneousn.2.Mpartmentofforearm1).superficiallayer:
brachioradialis
(radialN)
pronator
teres(pronatesforearm)旋前圆肌
flexorcarpi
radialis
palmaris
longusflexorcarpi
ulnaris(ulnarN)2).intermedial
layerflexordigitorum
superficialis
指浅屈肌肱桡肌掌长肌桡侧腕屈肌3).deeplayer:flexorpollicis
longusflexordigitorum
profundus
(ulnarhalfpart—ulnar
n.;radial–mediann.)
pronator
quadratusFunctionsabovethemuscels:
*flexelbowjoint,wristjoint,
metacarpo-phalangeal
joints,….
*pronateforearm指深屈肌旋前方肌拇长屈肌Mainvesselsandnervesinthearm1.Brachialartery
deepbrachiala.2.Medialn.3.Ulnarn.4.Radialn.5.Musculocutaneousn.
Cubital
fossa
肘窝1.Itisbounded
laterally
bybrachioradialis
mediallybypronator
teres
superiorlybyalinebetweenthemedialandlateralepicondyleofhumerus
posteriorlybybrachialisandsupinator,anteriorlyby:deepfasciaandaponeurosisofbicepsbrachii
Cubitalfossa2.Contentsinthefossa
#tendonofbicepsbrachii
#brachiala.,v.,and
mediann.
#radialn.*thebrachiala.isdividedintoulnaa.andradiala.,attheleveloftheneckofradius*mediann.liesinthemedialtothebrachiala.andpiercesthepronator
teres,thenitdescendsbetweentheflexordigitorum
superfisialis
andflexordigitorum
profundus.Vpartmentoftheforearm1.Radialvesselsandsuperficialbr.ofradialn.bundle
桡血管神经束
descendbetweenthebrachioradialisandflexorcarpi
radialis.
Theradiala.coursesaroundthestyloidofradiusandreachestothedorsumofhand.2.Ulnara.,v.,and
n.bundle*A.passesthroughthedeeptothepronator
teres.*N.piercestheflexorcarpi
ulnaris*Then,ulnar
a.,v.,andn.descendbetweentheflexor
digitorum
superficialisandflexorcarpi
ulnaris,andthey(a.v.,n.)reachtothepalm,throughthelateraltothepisiformbone.Supply:Injury:“clawhand”3mediann.Piercespronator
teresDescendesbetweentheflexor
digitorum
superficialisandprofundusAtwrist：betweenthetendonsofpalmaris
longusandflexorcarpi
radialis;
throughthedeeptotheflexorretinaculum
(throughthecarpalcanal腕管)supply:injury：tointerfere障碍/abatewithpronationofforearmandflexionofwrist“ape-like”erosseousvesselsandn.N-arisesfrommediann.A-arisesfromcommoninterosseous
a.(br.oftheulnara.)
carpalcanal腕管1.Itisformedbytheflexorretinaculumandgrooveofthecarpalbones2.Thestructurespassingthroughthecarpalcanal
1)tendonsoftheflexordigitorum
superficialis
2)tendonsofflexordigitorum
profundus
3)tendonofflexorpollicis
longus
4)mediannervecommonflexorsynovialsheathflexorpollicis
longussynovialsheathUlnarsacRadialsac(bursa)(3肌)9腱2囊1神经palmLayers:1)Skincallus(胼胝)2)Superficialfascia3)Palmaraponeurosistriangle-shaped,connectingwithtendonofpalmaris
longus掌腱膜palm4)Vesselsandnerves*superficial
palmar
arch:superficialpalmar
br.ofradiala.unitswithterminalbr.ofulnara..Sometimeitisacontinuationoftheulnara.Thearchgivesoff3commonpalmardigitala.*terminalbr.ofmediann.---thenarbr.(recurrentbr.)
*superficialbrofulnarn.血管神经层指掌侧总动脉鱼际支(返支)palm5)Tendon-muscelslayer腱肌层
(1)tendonsoftheflexordigitorum
superficialis
(2)tendonsofflexordigitorum
profundus
(3)tendonofflexorpollicis
longusandtheirsynovialsheath
(4)4lumbricals
蚓状肌6)Fascialspaces
midpalmar
space(medial),掌中隙
thenarspace(lateral)鱼际隙7)Deeppalmararchitisformedbytheanastomosisofterminalofradiala.withdeeppalmarbr.oftheulnara.
givingoff3
palmarmetacarpalaa.掌心动脉8)Interosseousm.andmetacarpalbones(9腱2囊4肌)
Themusclesinthehandmedialgroup---hyp
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