Human anatomy, including structure and development and practical considerations . branch tothe rectus femoris. Thosewhich aid in the innervationof the knee arise from the in-ternal saphenous and fromthe nerves to the vasti exter-nus and internus and thecrureus. cc. The internal or longsaphenous nerve ( n. saphenus)(Fig. 1109) is the continuationof the posterior division ofthe anterior crural nerve. Itcourses down the thighfirst lateral to and then an-terior to the superficial femoral artery under cover of the sartorius muscle. At the apexof Scarpas triangle it enters Hunters canal and accompan
Human anatomy, including structure and development and practical considerations . branch tothe rectus femoris. Thosewhich aid in the innervationof the knee arise from the in-ternal saphenous and fromthe nerves to the vasti exter-nus and internus and thecrureus. cc. The internal or longsaphenous nerve ( n. saphenus)(Fig. 1109) is the continuationof the posterior division ofthe anterior crural nerve. Itcourses down the thighfirst lateral to and then an-terior to the superficial femoral artery under cover of the sartorius muscle. At the apexof Scarpas triangle it enters Hunters canal and accompanies the vessels therein contained asfar as the opening in the adductor magnus. Departing from the vessels at this point, the nerve,piercing the anterior wall of Hunters canal, continues a downward course between the vastus .Xiiterior cniral nerve Rectus Kerve to pectineus leiiioral artery Articular branch Nerve to rectus, Ext. circumflex artery-Middle cutaneous,nerveRectus femoris, cut A descending branchof ext. art. TCerve to vastusinteniu Nerve to Pubic bonePectineus • IductorngUSvddiictormagnus Int. saphenous nervePost. div. Aponeuroticroof of Hunt-ers canal A br. of int. sa-phenous ner\e.\ muscular femoralartery Vastusinternus Internal saphenous ner\-eSuperficial br. anasto-motica magna art. Tendon of adductormagnus Dissection of right thigh, showing relation of anterior crural nerveto blood-vessels and to Hunters canal. 84 I330 HUMAN ANATOMY. internus and the adductor majjnus. At the inner side of the knee it l)ecomes superficial bypassinj; between tlie tendons of the sartorius and jjracihs and by piercinj^ tlie deej) fascia in thissituation. Thence it descends in tlie leg in association with the internal saphenous vein, at theankle passing anterior to tlie internal malleolus and reaching the inner aspect of the foot, onwhich it extends only as far as the nietacarpo-phalangeal articulation of the great toe (Kig. 1118)
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