Anterior/Medial Thigh Flashcards
Bones
Os Coxa
Femur
Patella
Cutaneous Ns
Ilioinguinal N. L1
Lateral femoral cutaneous N. L2-L3
Anterior (intermediate and medial) cutaneous branches of femoral N. L2-L4
Cutaneous branch of obturator N. L2
Saphenos N. (Continuous from femoral N) L3-L4
Femoral N.
Anterior thigh Ms.
L2-L4
Obturator N.
Medial thigh Ms.
L2-L4
Sciatic N.
Tibial N. L4-S3
Common fibulae N. L4-S2
Patellar reflex
Test function of femoral N.
L2-L4
Absence or decrease of this reflex is Westphal’s sign
Calcaneal Tendon Reflex
Tests S1-S2 nerve root
If cut or compressed, the ankle reflex is virtually absent
Muscles of Anterior Thigh
Pectineus
Iliopsoas
Sartorius
Quadriceps femoris
Iliopsoas M.
O: arterial portion of bodies of T12-L5 I: lesser trochanter N: iliacus=femoral N Psoas major= L1-L3 ventral rami Psoas minor= L1-L2 ventral rami A: Chief flexor of thigh
Iliopectineal bursa
Allows smooth functioning of iliopsoas
Deep to pectineus
Sartorius M.
O: ASIS I: Pes Anserinus N: femoral N. A: flex, abduct, laterally rotate thigh; flex leg Longest muscle Most superficial anterior muscle
Quadriceps femoris parts
Rectus femoris
Vastus Lateralis
Vastus Medialis
Vastus Intermedius
Quadriceps femoris
O: Rectus femoris= AIIS Vasti= shaft of femur I: Tibial tuberosity N: Femoral N. Action: extends leg, rectus also flexes thigh (passes hip and knee joint)
Osgood-Schlatter Disease
Muscles pull on tendon that connects the kneecap to the shinbone
Affects tibial tuberosity
Cause tendon to pull away from shinbone, resulting in pain and swelling
In some cases, body may try closing gap by growing bone
Quadriceps tendon
Tendons of all 4 parts of quadriceps femoris unite to form this
Continues inferior to patella as patellar L.
Bursa of knee
Suprapatear bursa/pouch
Infrapatellar bursa
Medial thigh muscles (adductors) Superficial
Pectineus
Adductor longus
Adductor brevis
Gracilis
Pectineus M.
O: Pectin line of pub us (superior pubic ramus)
I: pectineal line (femur)
N: Femoral N. (Occasionally branch from obturator N.)
A: ADduct and flex thigh
Adductor longus M.
O: body of pubic (inferior to pubic crest)
I: middle 1/3 of linea aspera
N: obturator N.
A: adducts and flexes thigh
Gracilis M.
O: pubis body and inferior ramus
I: superior part of medial surface of tibia (part of Pes Anserinus)
N: obturator N.
A: ADduct thigh, flex and medially rotate leg
Long strap like muscle
Only adductor to cross knee joint
Adductor brevis M.
Lies deep to pectineus and adductor longus O: Pubis body and inferior ramus I: proximal linea aspera N: obturator N. A: adducts and flexes thigh
Groin pull
Groin-junction between thigh and trunk
Strain, stretching, and probably some tearing of the proximal attachments of thigh adductor/flexor muscles
Deep Anterior Thigh muscles
Obturator Externus M.
Adductor Magnus M.
Obturator Externus M.
Deep to pectineus O: external margins of obturator foramen I: trochanteric fossa N: Obturator N. A: lateral rotation of thigh
Adductor Magnus M.
Largest adductor M.
Superior part lies deep to adductor brevis
1. Adductor portion
2. Hamstring portion
Adductor portion adductor magnus
O: ishiopubic ramus
I: gluteal tuberosity, linea aspera, medial supracondylar line
N: obturator N.
A: adducts and flexes thigh
Adductor magnus hamstring portion
O: ischial tuberosity
I: adductor tubercle (medial epicondyle)
N: tibial division of sciatic N.
A: adducts and extends thigh
Arteries of thigh
Femoral A. Deep femoral A. Medial Circumflex femoral A. Lateral Circumflex femoral A. Popliteal A. (Femoral A. Becomes this after passing adductor hiatus) Deep A. Of thigh 1st-4th perforating arteries Descending genicular A.
