TENSOR VAGINA FEMORIS SARTORIUS. 



217 



Fig. 130.' 



os pubis ; and a second, from the middle of the preceding down the inner 

 side of the thigh, and across the inner condyle of the femur, to the head 

 of the tibia, where it may be bounded by a transverse incision Turn 

 back the integument from the whole of this region, and examine the super- 

 ficial fascia ; which is next to be removed in the same manner. After the 

 deep fascia has been well considered, it is likewise to be removed, by dis- 

 secting it off in the course of the fibres of the muscles. As it might not 

 be convenient to the junior student to expose so large a surface at once as 

 ordered in this dissection, the vertical incision may be crossed by one or 

 two transverse incisions, as may be deemed most proper. 



The TENSOR VAGINA FEMORIS (stretcher of the sheath of the thigh) is a 

 short flat muscle, situated on the outer side of the hip. It arises from the 

 crest of the ilium, near its anterior superior spinous process, and is inserted 

 between two layers of the fascia lata at about one-fourth dowff the thigh. 



Relations. By its superficial surface with the fascia 

 lata and integument. By its deep surface with the in- 

 ternal layer of the fascia lata, gluteus medius, rectus 

 and vastus externus. By its inner border near its ori- 

 gin with the sartorius. 



The SARTORIUS (tailor's muscle) is a long riband- 

 like muscle, arising from the anterior superior spinous 

 process of the ilium, and from the notch immediately 

 below that process ; it crosses obliquely the upper 

 third of the thigh, descends behind the inner condyle 

 of the femur, and is inserted by an aponeurotic expan- 

 sion into the inner tuberosity of the tibia. This ex- 

 pansion covers in the insertion of the tendons of the 

 gracilis and semitendinosus muscles. The inner bor- 

 der of the sartorius muscle is the guide to the opera- 

 tion for tying the femoral artery in the middle of its 

 course. 



Relations. By its superficial surface with the fascia 

 lata and some cutaneous nerves. By its deep surface 

 with the psoas and iliacus, rectus, sheath of the femo- 

 ral vessels and saphenous nerves, vastus internus, ad- 

 ductor longus, adductor magnus, gracilis, long saphe- 

 nous nerve, internal lateral ligament of the knee joint. 

 By its expanded insertion with the tendons of the gra- 

 cilis and semi-tendinosus, a synovial bursa being inter- 

 posed. At the knee joint its posterior border is in 

 relation with the internal saphenous vein. At the up- 

 per third of the thigh the sartorius forms, with the lower 

 border of the adductor longus, an isosceles triangle, 

 whereof the base corresponds with Poupart's ligament, 

 line drawn from the middle of the base of the apex of this triangle, imme- 

 diately overlies the femoral artery with its sheath. 



* The muscles of the anterior femoral region. 1. The crest of the ilium. 2. Its an 

 terior superior sfnnous process. 3. The gluteus medius. 4. The tensor vaginae femoris. 

 its insertion into the fascia lata is shown inferiorly. 5. The sartorius. 6. The rectu.* 

 7. The vastus externus. 8. The vastus internus. 9. The patella. 10. The iliacus m 

 ternus. 11. The psoas magnus. 12. 'The pectineus. 13. The adductor longus. 14 

 Part of the adductor magnus. >5. Thi? gracilis. 



A perpendicular 



