The document discusses the anatomy of the thigh and buttock. It describes the thigh as having three compartments - anterior, medial, and posterior. Each compartment contains specific muscles innervated by different nerves and supplied by distinct arteries. The buttock contains superficial muscles like the gluteus maximus and deeper external rotator muscles of the hip innervated by specific nerves. The blood supply to both regions is outlined, with the femoral artery and its branches dominating flow to the thigh.

1. Thigh and Buttock

2. Thigh
 Three
Compartments; ant., medial and
posterior
 Lateral thigh consists of thickened fascia
of the lower extremity called the Fascia
Latae called the Iliotibial Band (Tract)
that serves as an insertion of the Tensor
Fascia Latae muscle
 Extends distal and lateral to knee, inserts
on the tibia at Gerdy’s Tubercle

3. Thigh



Anterior compartment = knee extensors and some
hip flexors; innervated by femoral nerve, blood
supply by femoral artery and its branches
Medial Compartment = hip adductors (some rotation
and flexion); innervated by obturator nerve and its
branch, blood supply by branches off deep femoral
artery and obturator artery
Posterior compartment = hip extensors and knee
flexors; innervated by tibial or common peroneal
nerves, blood supply by deep femoral artery

4. Anterior Compartment

5. Lateral Thigh (Fascia Late)

6. Posterior Thigh

7. Medial Thigh

8. A Reminder – Prime Movers of
Hip Flexion

9. Anterior Compartment
 Femoral
Triangle
 Borders =
 Contents =
 Course of femoral nerve and artery;
Adductor Canal- Adductor Hiatus
 Muscles
 Sartorius, Pectineus, Quadriceps

10. Femoral Triangle - Boundaries

11. Femoral Triangle - Contents

12. Anterior Muscles

13. Anterior Muscles

14. Anterior Muscles

15. Anterior and Medial Thigh

16. Medial Compartment
 Muscles
 Gracilis,
Adductor Longus, Adductor
Brevis, Adductor Magnus
 Common actions
 Pulled groin
 Spastic adductors

17. Medial Compartment

18. Adductor Magnus

19. Posterior Compartment
 “Hamstrings”
 Common
Origin
 Exception
 Medial and Lateral Insertions

20. Posterior Muscles

21. Posterior Thigh

22. Posterior Thigh

23. Buttock
 Supericial
 Gluteus
Maximus
 Gluteus Medius – reverse action
 Gluteus Minimus
 Tensor Fascia Latae – iliotibial band,
functional considerations
 “Gower’s” Sign
 Positive Trendelenburg

24. Gluteus Maximus

25. Gluteus Maximus

26. Gluteus Medius and Minimus

27. G Med., G Min, TFL

28. TFL

29. Trendelenburg

30. Deep Buttocks






“External Rotators of the Hip”
Small Muscles
Mostly attach near or on greater trochanter
Excellent mechanical advantage for 1)
producing external rotation and 2) to help
maintain stability of the hip
All but one innervated by named nerves
specific to one or two of them
The exception is the obturator externus –
innervated by posterior brach of obturator n.

31. Deep Buttock
 Muscles:
 Piriformis
 Superior
Gemellus
 Obturator Internus
 Inferior Gemellus
 Quadratus Femoris
 Obturator Externus

32. Deep Muscles of Buttocks

33. Deep Buttock

34. Deep Muscles

35. Deep Muscles

36. Deep Muscles

37. Blood Supply
 Femoral
Artery
 Deep Femoral (AKA Femoral Profunda)
 Medial Circumflex
 Lateral Circumflex
• Ascending Branch
• Lateral Branch
• Descending Branch

38. Blood Supply

39. Blood Supply

40. Blood Supply