Muscles- THE ANTERIOR COMPARTMENT OF THE THIGH Flashcards
In general, what are the Actions of the Muscles in the ANTERIOR COMPARTMENT of the Thigh?
HIP FLEXION
KNEE EXTENSION
Which NERVE Innervates the Muscles of the ANTERIOR COMPARTMENT?
The Femoral Nerve (L2,L3,L4)
List the Muscles of the ANTERIOR COMPARTMENT of the Thigh
- Sartorius
- Iliopsoas
- Pectineus
- Vastus Medialis
- Vastus Intermedius
- Vastus Lateralis
- Rectus Femoris
What is the proximal attachment of the Pectineus muscle?
Superior Pubic Ramus
What is the Distal attachment of the Pectineus muscle?
Pectineal Line of the Femur
Pectineus Attachments
Pectineal Line of Femur
What are the actions of the Pectineus Muscle?
Hip Flexion and Adduction
Apart from the femoral nerve, which other nerve may also innervate the Pectineus muscle?
The OBTURATOR NERVE
- The pectineus is considered TRANSITIONAL MUSCLE between the anterior and medial compartments
- The Pectineus can both Flex and Adduct the Hip
What is the most powerful flexor of the hip joint?
The ILIOPSOAS
What is the proximal attachment of the Psoas Major and Psoas Minor Muscles?
- Psoas Major- T12-L5 Vertebra Transverse processes and Discs
-Psoas Minor- T12-L1Vertebra Transverse processes and Discs
What is the Distal attachment of the Psoas Major and Psoas Minor Muscles?
- Psoas Major- Lesser Trochanter of the Femur
-Psoas Minor- Pectineal Line
What Nerves innervate the Psoas Muscle?
Anterior Rami of L1, L2, L3
Psoas Muscle
What is the proximal attachment of the ILIACUS MUSCLE?
Iliac Crest, Iliac fossa, Sacroiliac Ligaments