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Thigh and Buttock
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
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
Anterior Compartment
Lateral Thigh (Fascia Late)
Posterior Thigh
Medial Thigh
A Reminder – Prime Movers of Hip Flexion
Anterior Compartment
Femoral Triangle Borders = Contents = Course of femoral nerve and artery;
Adductor Canal- Adductor Hiatus Muscles Sartorius, Pectineus, Quadriceps
Femoral Triangle - Boundaries
Femoral Triangle - Contents
Anterior Muscles
Anterior Muscles
Anterior Muscles
Anterior and Medial Thigh
Medial Compartment
Muscles Gracilis, Adductor Longus, Adductor
Brevis, Adductor Magnus Common actions Pulled groin Spastic adductors
Medial Compartment
Adductor Magnus
Posterior Compartment
“Hamstrings” Common Origin Exception Medial and Lateral Insertions
Posterior Muscles
Posterior Thigh
Posterior Thigh
Buttock
Supericial Gluteus Maximus Gluteus Medius – reverse action Gluteus Minimus Tensor Fascia Latae – iliotibial band,
functional considerations “Gower’s” Sign Positive Trendelenburg
Gluteus Maximus
Gluteus Maximus
Gluteus Medius and Minimus
G Med., G Min, TFL
TFL
Trendelenburg
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.
Deep Buttock
Muscles: Piriformis Superior Gemellus Obturator Internus Inferior Gemellus Quadratus Femoris Obturator Externus
Deep Muscles of Buttocks
Deep Buttock
Deep Muscles
Deep Muscles
Deep Muscles
Blood Supply
Femoral Artery Deep Femoral (AKA Femoral Profunda) Medial Circumflex Lateral Circumflex
• Ascending Branch
• Lateral Branch
• Descending Branch
Blood Supply
Blood Supply
Blood Supply