Muscles of the medial thigh Flashcards
Describe the muscles of the medial thigh?
Name them
Hip adductors or groin muscles. Innervated by obturator nerve, arterial supply is via the obturator artery
Gracilis Obturator externus Adducotr brevis Adductor longus Adductor magnus
Describe adductor magnus
What innervates it?
Largest muscle of medial comaprment it can be divided into two bits: hamstring section and adductor section
Hamstring: tibial component of sciatic nerve
Adductor: obturator nerve (L2-L4)
What are the attchmetns of adductor magnus
What are its acctions?
Adductor part- originates from inferior rami of the pubis and the rami of the ischium, attaching to the linea aspera of the femur
Hamstring part- originates from the ischial tuebrosity and attches to the adductor tubercle and medial supercondyle line of the femur
Adduct the thigh, flexes thigh- adductor, extends thigh- hamstring
What is aductor longus?
What inenrvates it?
Long flat muscle. Forms the medial border of the femoral triangle
Obturator nerve
What are adductor longus’ attachements
What are its actions?
Originates from pubis and expands into fan shae, attatcheing broadly to linea aspera of femur
Adducts the thigh
What is adductor brevis?
What innervates it
Short muscle lying underneath adductor longus
Obturator nerve
What are the attchemtns of adductor brevis?
What are its actions?
originates from the body of pubis and inferior pubic rami Attaches to the linea aspera on the posterior femur
Adducts thigh
What is obturator externus?
What innervates it
Smaller muscle of medial thigh, located superiorly
Obturator nerve
What are obturator externus’ attchements
What are its actions?
Originates from the membrane of the obturator foramen and adjacent bone. Passes underneath neck of femur and attches to posterior aspect of greater trochanter
What is Gracilis?
What innervates it
Most suoeprficial and medial medial thigh msucle. Crosses both knee adn hip joint
Obturator nerve
What are Gracilis attachments
What are its actions?
Origginates from the inferior rami of the pubis and body of pubis. Attaches to medial surface of tibia between sartorius and semitendinous tendons
What common injury occurs to the adductor muscles?
“groin strain” proximal part of he muscle most commonly strained or torn. Typically occur in sports with explosive movements of extreme flexibility
