局部解剖学课件：下肢前区双语

臀沟ThelowerlimbsSection1Intruction1.BoundariesanddivisionsBoundaries:

Inguinalgrooves,iliaccrest,pudendal-thighsulcus.Divisions:Thelowerlimbisdividedintotheglutealregion(buttock),thigh,knee,leg,ankleandfoot.Glutealregionandthighiliaccrest

髂嵴anteriorsuperioriliacspine髂前上嵴posteriorsuperioriliacspine髂后上嵴tubercleofiliaccrest髂结节ischialtuberosity坐骨结节greatertrochanter大转子pubicsymphysis耻骨联合pubiccrest耻骨嵴pubictubercle耻骨结节inguinalligament腹股沟韧带2.Surfaceanatomy(1)ThesurfacelandmarksKneePatella髌骨patellaligament髌韧带tibialtuberosity胫骨粗隆lateralandmedialcondylesoffemur

股骨内外侧髁lateralandmedialepicondylesoffemur

股骨内外侧上髁Adductortubercle收肌结节lateralandmedialcondylesoftibia胫骨内外侧髁Fibularhead腓骨头tendonofbicepsfemoris股二头肌腱tendonsofsemitendinosusandsemimembranosus半腱和半膜肌腱Leg,AnkleandFootanteriorborderoftibia胫骨前缘headoffibula腓骨头neckoffibula腓骨颈medialandlateralmalleolus内、外踝

calcanealtuberosity跟结节

tuberosityofnavicularbone舟骨结节

tuberosityoffifthmetatarsalbone第五跖骨粗隆

1.Superiorgluteala.,v.,andn.2.Inferiorgluteala.,v.,andn.3.Sciaticn.4.Femorala.andv.5.Popliteala.6.Anteriortibiala.7.Posteriortibiala.

8.DorsalarteryoffootTheprojectionsofthebloodvesselsandnerves颈干角neck-shaftangle膝外翻角颈干角125-130度大于：髋外翻小于：髋内翻膝外翻角外侧夹角170度小于：膝外翻，X大于：膝内翻，Oless-than1250:

、coxavara

髋内翻(itoccursinfracturesoftheneckofthefemurandslippingofthefemoralepiphysis)greaterthan

1300:

coxavalga

髋外翻(incasesofcongenital先天性的dislocationofthehip)Normalangleofinclination1250-1300

neck-shaftangleNormalalignmentGenuvarum(bowleg)膝内翻

Genuvalgum膝外翻1700

>1700<1700TheorientationofthepelvisinthestandingpositionInthestandingpositiontheplaneofthelineaterminalisisusuallyinclinedatanangleofabout600tothehorizontal.Theanteriorsuperiorspineandthepubicsymphysisareinapproximatelythesameverticalplane.alsoknownastheRoser-Nélatonlinealinedrawnfromtheanteriorsuperiorlilacspinetotheischialtuberosity,passingoverornearthetopofthegreatertrochanter.Thetrochantercanbefeltsuperiortothislineinapersonwhichdislocatedhipjointorfracturedfemoralneck.

Nelaton’slinenormalabnormal2.Kapian’spoint(shoemaker’ssign)Thepatientliessupinewithstretchedlegs.Joinalinefromtheapexofthegreatertrochantertotheanteriorsuperioriliacspine.Normally,itsprolongedlinepassesthroughorabovetheumbilicus.Ifthelinepassesbelowtheumbilicus,itindicatesthepresenceofsuperiordisplacementofthegreatertrochanter.normalabnormalBryantlineandbryanttriangleSuperficialstructure1.Skin2.SuperficialfasciaSuperficialarteries:Superficialepigastrica.

腹壁浅动脉2.Superficialiliaccircumflexa.

旋髂浅动脉3.Superficial

externalpudendala.

阴部外浅动脉①③②Superficialveinsgreatsaphenousvein大隐静脉Origin:fromthemedialsidesofadorsalvenousarchinthefoot.

Course:passesupwarddirectlyinfrontofthemedialmalleolus,thenascendsonthemedialsideoftheleg,knee,andthightopassthroughthesaphenoushiatusindeepfasciaandjoinwiththefemoralvein.Tributariesofthegreatsaphenousvein

①Superficialiliaccircumflexv.

旋髂浅静脉

②Superficialepigastricv.

腹壁浅静脉

③Externalpudendalv.

阴部外静脉

④Superficialmedialfemoralv.

股内侧浅静脉

⑤Superficiallateralfemoralv.

股外侧浅静脉①②③④⑤Typesoftributariesofthegreatsaphenousvein临床意义：

①大隐静脉切开

②大隐静脉曲张

Varicoseveinsnormalabnormal腔镜下交通支结扎术微创刨吸术Origin:fromthelateralsidesofadorsalvenousarchinthefoot.

Course:passesbehindthedistalendofthefibula(lateralmalleolus)andupthebackofthelegtopenetratedeepfasciaandjointhepoplitealveinposteriortotheknee.Smallsaphenousvein

小隐静脉⑧⑦①④Superficialperonealn.②⑤Cutaneousnerves股部皮神经有：anteriorfemoralcutaneousn.medialfemoralcutaneousn.lateralfemoralcutaneousn.cutaneousbr.ofobturatorn.

saphenousn.femoralbr.ofgenitofemoraln.iliohypogastricn.ilioinguinaln.③⑥Lateralsuralcutaneousn.⑧⑦①④Superficialperonealn.②⑤Cutaneousnerves股部皮神经有：anteriorfemoralcutaneousn.medialfemoralcutaneousn.lateralfemoralcutaneousn.cutaneousbr.ofobturatorn.

saphenousn.femoralbr.ofgenitofemoraln.iliohypogastricn.ilioinguinaln.③⑥

superiorclunealn.medialclunealninferiorclunealn.lateralfemoralcutaneousn.posteriorcutaneousn.ofthighcutaneousbr.ofobturatorn.medialsuralcutaneousn.lateralsuralcutaneousn.suralnerve⑨Cutaneousnerves⑧⑦①④②⑤③⑥monperonealn.③⑥④⑤⑧⑦

superiorclunealn.medialclunealninferiorclunealn.lateralfemoralcutaneousn.posteriorcutaneousn.ofthighcutaneousbr.ofobturatorn.medialsuralcutaneousn.lateralsuralcutaneousn.suralnerveCutaneousnervesSuperficialinguinallymphnodes

superiorgroupinferiorgroupreceivelymphdrainagefromtheentirelowerlimb,thesuperficialstructuresoftheperineumandabdominalwallbelowtheumbilicus.Efferentvesselsdrainintothedeepinguinalorexternaliliaclymphnodes.股部的深筋膜又称阔筋膜，为全身最厚的深筋膜，致密坚韧。骨筋膜鞘综合症：腔内压力大于30mmHg必须积极治疗。超过24小时造成功能损害；超过72小时只能截肢ThedeepstructuresDeepfascia–fascialata阔筋膜Thestructuresformedbyfascialata（1）Iliotibialtract髂胫束

（2）Saphenoushiatus隐静脉裂孔

--falciformmargin--cribriformfascia（3）threeintermuscularseptaAnt.osseofascialcompartmentsMed.osseofascialcompartmentsPost.osseofascialcompartmentsThelacunamusculorumandlacunavasorumPosition：thegapbetweeninguinalligamentandhipbone.Ailiopectinealarchextendingfromtheinguinalligamenttotheiliopectnealeminence.肌腔隙血管腔隙LacunamusculorumlacunavasorumBoundies：anteriorly:

inguinalligament

posterolaterally:

iliumMedially:Theiliopectinealarch

Thelacunamusculorum肌腔隙Contents:

Theiliopsoas髂腰肌

Thefemoralnerve股神经

Thelateralfemoralcutaneousn.

股外侧皮神经Boundies:anteriorly:inguinalligamentposteromedially:fasciaofpectineusandpectinealligamentmedially:lacunarligamentlaterally:iliopectinealarchlacunavasorum血管腔隙Contents:Femoralsheath股鞘Femorala.,v.andfemoralcanal

Femeralbranchofgenitofemoraln.

Lymphaticvessels股神经股动脉股静脉股管femoraltriangle股三角Theboundaries：Superiorly:inguinalligamentInfralaterally:med.borderofthesartoriusmedially:med.borderoftheadductorlongusanteriorwall:

fascialataposteriorwall:adductorlongus,pectineusandiliopsoasThestructurespassthroughthemuscularlacuna:

iliopsoas髂腰肌

femoraln.股神经lateralfemoralcutaneousn.

股外侧皮神经Contentsofthefemoraltriangle股神经股动脉股静脉股管缝匠肌髂腰肌耻骨肌长收肌Contentsofthefemoraltrianglefromlateraltomedialside：femorala.femoralv.femoralcanal股神经股动脉股静脉股管缝匠肌髂腰肌耻骨肌长收肌Thestructurespassthroughthevascularlacuna:femoralsheathisaafunnel-shapedsheath,derivedfromtransversalisfasciaanteriorlyandiliacfasciaposteriorly.Itsurroundsthefemoralvesselsandlymphaticabout2.5cmbelowtheinguinalligament.股外侧皮神经生殖股神经股支股前皮神经髂腹股沟神经股内侧神经隐神经腓肠外侧皮神经腓浅神经Femoralnerve

(L2,L3,L4)：Muscularbranches:Suppliesthemusclesoftheanteriorcompartmentofthethigh,includingpectineusandiliopsoas.Cutaneousbranches:

Anteriorcutaneousn.ofthethighSaphenousn.。

位于股静脉上部周围和股管内。收纳下肢、会阴部、臀部等处的淋巴，其输出管注入髂外淋巴结。deepinguinallymphnodesTheadductorcanal(Hunter管)位置:

anaponeurotictunnelinthemiddlethirdofthethigh,extendingfromtheapexofthefemoraltriangletotheopeningintheAdductormagnus,theAdductorhiatus.Theadductorcanal(Hunter管，收肌管)上口:

接股三角尖下口:

收肌腱裂孔，通腘窝。Boundaries:Anteriorly:sartoriusandadductorlaminaAnterolaterally:vastusmedialisPosteriorly:adductorlongusand

adductormagnus

通过结构及位置关系：

从前向后为:

saphenousn.

femorala.

femoralv.股内侧区肌肉：①耻骨肌pectineus②长收肌adductorlongus③股薄肌gracilis④短收肌adductorbrevis⑤大收肌adductormagnus

血管、神经闭孔动脉Obturatora.

闭孔神经Obturatorn.

①②③④①④②⑤③膝前区浅层结构深层结构皮肤浅筋膜髌前皮下囊鹅足髌韧带髌内、外侧支持带髌上囊TheAnteriorandLateralRegionsofTheLeg1.Thesuperficialstructures

（1）Thesuperficialfascia

SuperficialveinsandnervesThegreatsaphenousv.大隐静脉Thesaphenousn.隐神经Superficialperonealn.腓浅神经Thedeepfascia:Surroundsthelegandformsanteriorandposteriorintermuscularseptatobeattachedtothefibula.Dividedthelegintothreecompartments:anterior,lateralandposterior,eachofwhichcontainsagroupofmuscles,thevesselsandthenerves.2.ThedeepstructuresSuperiorextensorretinaculum

伸肌上支持带Inferiorextensorretinaculum

伸肌下支持带Thecontentoftheanteriorosseofascialcompartment（1）muscles①tibialisanterior胫骨前肌

②extensorhallucislongus拇长伸肌

③extensordigitorumlongus趾长伸肌

④peroneustertius腓骨第三肌（2）血管神经

anteriortibiala.andv.dorsalarteryoffootdeepperonealnerve腓深神经①②③Thecontentofthelateralosseofascialcompartment（1）muscles

Theperoneuslongus腓骨长肌

Theperoneusbrevis腓骨短肌（2）superficialperonealn.

腓浅神经suppliesperoneuslongusandbrevisandskinonanteriorsurfaceofleganddorsumoffoot腓总神经损伤“马蹄”内翻足畸形足不能背屈，足下垂、内翻，趾不能伸，“马蹄”内翻足，感觉障碍在小腿外侧和足背明显。InjurytothecommonperonealnerveThecommonfibularnervemaybeseveredduringfractureofthefibulaneckorseverelystretchedwhenthekneejointisinjuredofdislocated.Severanceofthecommonfibularn.resultsinparalysisofallmusclesintheanteriorandlateralcompartmentsoftheleg.Thelossofeversionofthefootanddorsiflexionoftheanklecausesfoot-drop.Thefootdropsandthetoesdragofthefloorwhenwalking.Becauseitisimpossibletomaketheheelstrikethegroundfirst,thepatienthasahighstepping(‘steppage”)gait,raisingthefootashighasnecessarytokeepthetoesfromhittingtheground.胫神经损伤“钩状足”畸形足不能跖屈，内翻力弱，不能以足尖站立，感觉障碍以足底区明显。Youmustidentifyfollowstructures！AnteriorandMedialRegionofThighMusclesPsoasIliacusSartoriusQuadricepsfemorisRectusfemorisVastusmedialisVastuslateralisVastusintermediusPatellarligamentPectineusAdductorlongusAdductorbrevis,AdductormagnusGracilisVesselsGreatsaphenousv.Femorala.Deepfemorala.Nervesfemoraln.Saphenousn.Obturatorn.AnterolateralcruralregionanddorsumofthefootMusclesTibialisanteriorExtensorhallucislongusExtensordigitorumlongusPeroneuslongusPeroneusbrevisVesselsGreatsaphenousv.Anteriortibiala.Dorsalispedis

a.NervesCommonperonealn.Deepperonealn.Superficialperonealn.Youmustidentifyfollowstructures！natalcleft臀裂glutealsulcus臀沟Theposteriorregionofthelowerlimb下肢后区SurfaceanatomyGlutealregionandthighposteriorsuperiorandinferioriliacspines髂后上、下嵴tubercleofiliaccrest髂结节ischialtuberosity坐骨结节mediansacralcrest骶正中嵴sacralcornu骶角sacralhiatus骶管裂孔Origin:fromthelateralsidesofadorsalvenousarchinthefoot.

Course:passesbehindthedistalendofthefibula(lateralmalleolus)andupthebackofthelegtopenetratedeepfasciaandjointhepoplitealveinposteriortotheknee.1.SuperficialstructuresSmallsaphenousvein

小隐静脉(1)Skin(2)Superficialfasciasuperiorclunealn.medialclunealninferiorclunealn.lateralfemoralcutaneousn.posteriorfemoralcutaneousn.cutaneousbr.ofobturatorn.medialsuralcutaneousn.lateralsuralcutaneousn.suralnerve⑨Cutaneousnerves⑧⑦①④②⑤③⑥monperonealn.Cutaneousnerves:③⑥④⑤⑧⑦superiorclunealn.medialclunealninferiorclunealn.lateralfemoralcutaneousn.posteriorfemoralcutaneousn.cutaneousbr.ofobturatorn.medialsuralcutaneousn.lateralsuralcutaneousn.suralnervelymphdrainageandlymphnodes2.Deep

structuresDeepfasciaAnt.osseofascialcompartmentsMed.osseofascialcompartmentsPost.osseofascialcompartmentsthreeintermuscularseptacruralinterosseousmembraneAnt.osseofascialcompartmentsLat.osseofascialcompartmentsPost.osseofascialcompartments2.Deep

structuresDeepfasciathreeintermuscularseptaTheglutealregion殿上皮神经殿内侧皮神经殿大肌臀大肌臀中肌臀小肌梨状肌股方肌1.Boundaries2.Superficialstructures

3.DeepstructuresThedeepfascia–theglutealfascia

Themusclesoftheglutealregion:3layersGluteusmaximus,Tensorfasciaelatae

Gluteusmedius,Piriformis,QuadratusfemorisGluteusminimusRegionalstructuresGreatersciaticforamen坐骨大孔

Suprapiriformforamen梨状肌上孔Infrapiriformforamen梨状肌下孔Lessersciaticforamen坐骨小孔SacrotuberousligamentSacrospinousligamentsuprapiriformandinfrapiriformforamensuprapiriformforamen:

superiorglutealn.,a.andv.Infrapiriformforamen:

sciaticn.

,posteriorfemoralcutaneousn.

inferiorglutealn.,ernalpudendala.andv.,pudendaln.Lessersciaticforamen:internalpudendala.andv.,pudendaln.

Relationshipofsciaticnervetothepiriformis：臀上神经髂后下棘坐骨神经坐骨结节大转子髂前上棘臀中肌髂结节大转子坐骨神经髂结节臀中肌髂前上棘臀上神经臀部肌肉注射部位股外侧肌肌内注射髋关节动脉网

以“臀部十字吻合”为重要，位于臀大肌深面。组成：两侧为①旋股内侧动脉②旋股外侧动脉上部为③臀上动脉④臀下动脉下部为⑤第一穿动脉临床意义：如手术结扎一侧髂内动脉，通过此动脉网建立侧支循环，血液仍可到达髂内动脉的分布区。①②③④⑤③④Thebackofthethigh1.Themuscles:bicepsfemoris股二头肌semitendinosus半腱肌semimembranosus半膜肌①②③①Thesciaticnerve坐骨神经：2.Bloodvesselsandnerves

Itarisesfromthesacralplexusandpassesthroughinfrapiriformforamenintotheglutealregion,passingmidwaybetweenthegreatertrochanteroffemurandischialtuberositytobackofthigh,itusuallyendshalf-waydownthebackofthethighbydividingintothecommonperonealandtibialnerves.Distribution:semitendinosus,semimembranosus,thebicepsfemorisandhipandkneejointsPerforatingarteries穿动脉股后区的动脉吻合①由臀下动脉，旋股内、外侧动脉和第1穿动脉形成的十字吻合。②各穿动脉之间的吻合。③由股深动脉的终支与腘动脉肌支形成的吻合。PoplitealFossa腘窝Theboundaries:Upperlateral:

BicepsfemorisUppermedial:

SemitendinosusandsemimembranosusLowerlateral:

lateralheadofthe

gastrocnemiusLowermedial:

medialheadofthegastrocnemiusRoof:

poplitealfasciaFloor:

Poplitealsurfaceoffemur,jointcapsuleofthekneejoint,obliquepoplitealligament,andpopliteuswithitsfasciasuperficialtodeepincentral：

Tibialn.胫神经

Poplitealv.腘静脉

Popliteala.腘动脉upperlateralmargin:Commonperonealn.Poplitealdeeplymphnodes2.Contents临床上股骨下端骨折易损伤腘动脉

膝关节动脉网组成：

①腘动脉的5条关节支

②旋股外侧动脉的降支

③膝降动脉(股动脉在收肌管内的分支)④胫前返动脉

⑤第3、4穿动脉意义：若腘动脉阻塞，此动脉网有一定的代偿作用。②③④⑤Thebackoftheleg1.Thesuperficialstructures:1)smallsaphenousvein小隐静脉

itpassposteriortothelateralmalleolusandupwardstothepoplitealfossa.2)①medialsuralcutaneousnerve

腓肠内侧皮神经

②lateralsuralcutaneousnerve

腓肠外侧皮神经

③suralnerve

腓肠神经①②③

TheDeepStructures

（1）Muscles①gastrocnemius腓肠肌②soleus比目鱼肌③flexordigitorumlongus

趾长屈肌④flexorhallucislongus拇长屈肌⑤tibialisposterior

胫骨后肌①②③④⑤sciaticnerve

坐骨神经medialsuralcutaneousn.腓肠内侧皮神经suralnerve腓肠神经tibialn.胫神经commonperonealn.腓总神经lateralsuralcutaneousn.腓肠外侧皮神经sciaticnerve

坐骨神经medialsuralcutaneousn.腓肠内侧皮神经suralnerve腓肠神经tibialn.胫神经commonperonealn.腓总神经lateralsuralcutaneousn.腓肠外侧皮神经tibialn.胫神经（2）血管神经posteriortibiala.andv.胫后动、静脉tibialn.胫神经malleolarcanal踝管Itisformedbymedialmalleolus,flexorretinaculumandcalcaneusContents:TendonoftibialisposteriorTendonofflexordigitorumlongusPosteriortibialartery,veinTibialnerveTendonofflexorhallucis胫后动脉及胫神经分为足底内、外侧动脉和足底内、外侧神经。足底胫腓骨骨折（Fracturesofthetibiaandfibula）骨折特点上1/3骨折易损伤动脉，造成肢体坏死。中1/3骨折易造成骨筋膜室综合征下1/3骨折易造成骨折延迟愈合或不愈合股骨干骨折

Fractureofthefemur骨折移位特点股骨干上1/3骨折--近折端：屈曲，外旋，外展远折端：向上，内，后移位股骨干中1/3股骨干远1/3骨折--受腓肠肌牵拉向后倾，易损伤国动脉和静脉，胫神经和腓前神经

小结1.Nelaton线和Kaplan点及其临床意义。2.坐骨神经、股动脉和足背动脉的体表投影。3.梨状肌上、下孔及坐骨小孔的构成及其穿经结构。4.大隐静脉的起止、行程、交通、属支及其临床意义。5.肌腔隙、血管腔隙的位置、境界及内容。6.股三角的位置、境界、构成及内容物的位置关系。7.股管的构成、内容及临床意义。8.坐骨神经的行程、分支、分布以及与梨状肌的关系。9.肌腔隙、血管腔隙、股鞘、股管、股环、股三角、Hunter管、腘窝、踝管

思考题1.梨状肌上、下孔各有哪些结构穿过，排列关系如何？2.试述大隐静脉的行程、属支及其临床意义。3.股三角界线如何确定？其内有哪些结构？4.简述坐骨神经的行程、分支和分布，及坐骨神经与梨状肌的关系。TableofMusclesMuscleOriginInsertionActionNerve

Supplygluteusmaximusbackofilium,sacrum,coccyx,

sacrotuberousligament,erectorspinaetendoniliotibialtract,

glutealtuberosity

offemurextendsandlaterallyrotatesthighathip;

throughiliotibialtract

itextendskneejointinferiorglutealnervegluteusmediusBelowiliaccreatbetweenantandpostglut.linesgreatertrochanteroffemurabductsthighathip;tiltspelvis

whenwalkingsuperiorglutealnervegluteusminimusoutersurfaceofiliumbeneathglutmediusgreatertrochanteroffemurabductsthighathip;anteriorfibersmediallyrotate

thighsuperiorglutealnervetensorfasciaelataeanteriorpartofiliaccrestiliotibialtractandlateralcondyleoftibiaSameasglutmax,assistsgluteusmaximusinextendingthekneejointsuperiorglutealnervepiriformisanteriorsurfaceofsacrumgreatertrochanteroffemurlateralrotatorofthighsacralnerveS1andS2superiorgemellusspineofischiumbylessersciaticnotchgreatertrochanteroffemurontendonofobturatorinternuslateralrotatorofthighsacralplexusobturatorinternusinnersurfaceofobturator

membranegreatertrochanteroffemurlateralrotatorofthighsacralplexusinferiorgemellusischialtuberositygreatertrochanteroffemurontendonofobintlateralrotatorofthighsacralplexusobturatorexternusoutersurfaceofobturator

membranegreatertrochangeroffemurlateralrotatorofthighobturatornervequadratusfemorisischialtuberositylateralsideIntertrochantericcrestoffemurlateralrotatorofthighsacralplexusMusclesoftheglutealregionMuscleOriginInsertionActionNerveSupplygluteusmaximusbackofilium,sacrum,coccyx,sacrotuberousligament,erectorspinaetendoniliotibialtract,glutealtuberosityoffemurextendsandlaterallyrotatesthighathip;throughiliotibialtract.itextendskneejointinferiorglutealnervegluteusmediusBelowiliaccreatbetweenantandpostglut.linesgreatertrochanteroffemurabductsthighathip;tiltspelvis

whenwalkingsuperiorglutealnervegluteusminimusoutersurfaceofiliumbeneathglutmediusgreatertrochanteroffemurabductsthighathip;anteriorfibersmediallyrotatethighsuperiorglutealnervetensorfasciaelataeanteriorpartofiliaccrestiliotibialtractandlateralcondyleoftibiaSameasglutmax,assistsgluteusmaximusinextendingthekneejointsuperiorglutealnervepiriformisanteriorsurfaceofsacrumgreatertrochanteroffemurlateralrotatorofthighsacralnerveS1andS2superiorgemellusspineofischiumbylessersciaticnotchgreatertrochanteroffemurontendonofobturatorinternuslateralrotatorofthighsacralplexusobturatorinternusinnersurfaceofobturator

membranegreatertrochanteroffemurlateralrotatorofthighsacralplexusinferiorgemellusischialtuberositygreatertrochanteroffemurontendonofobintlateralrotatorofthighsacralplexusobturatorexternusoutersurfaceofobturator

membranegreatertrochangeroffemurlateralrotatorofthighobturatornervequadratusfemorisischialtuberositylateralsideIntertrochantericcrestoffemurlateralrotatorofthighsacralplexusMusclesofthebackofthighMuscleOriginInsertionActionNerveSupplybicepsfemoris,longheadischialtuberosityheadoffibulaflexesandlaterallyrotatesleg,extendsthightibialpartofsciaticnervebicepsfemoris,shortheadshaftoffemur,lineaasperaheadoffibulaflexesandlaterallyrotateslegcommonperonealnervesemitendinosusischialtuberosityupperpartmedialsurfaceoftibiaflexesandmediallyrotatesleg;extendsthightibialpartofsciaticsemimembranosusischialtuberositymedialcondyleoftibia;formsobliquepoplitealligamentflexesandmediallyroatesleg;extendsthightibialpartofsciaticadductormagnus(hamstringpart)ischialtuberosityadductortubercleoffemurextendsthightibialpartofsciaticTableofMusclesMuscleOriginInsertionActionNerve

Supplybicepsfemoris,longheadischialtuberosityheadoffibulaflexesandlaterallyrotatesleg,extendsthightibialpartofsciaticnervebicepsfemoris,shortheadshaftoffemur,lineaasperaheadoffibulaflexesandlaterallyrotateslegcommonperonealnervesemitendinosusischialtuberosityupperpartmedialsurfaceoftibiaflexesandmediallyrotatesleg;extendsthightibialpartofsciaticsemimembranosusischialtuberositymedialcondyleoftibia;

formsobliquepoplitealligamentflexesandmediallyroatesleg;extendsthightibialpartofsciaticadductormagnu