Anatomy lower limb Flashcards
Gluteus maximus innervation
Inferior gluteal nerve (L5, S1, S2)
Gluteus medius
Gluteus minimus
Tensor fascia latae
innervation
Superior gluteal nerve (L5, S1)
Gluteus maximus job
Extend thigh
Gluteus medius
Gluteus minimus
Tensor fascia latae
Abducts thigh + mainly stabilizer (steadies pelvis on leg wen opposite leg is raised)
deep muscles of gluteal region-job Piriformis Obturator internus Superior gemellus Inferior gamellus Quadratus femoris
Lateral rotation of thigh at hip joint
anterior compartemnt thigh innervation
femoral nerve (except Psoas major-Ventral rami of lumbar nerves (L1-L3) and pectinous (fem + obturator nerve)
quadiceps femoris job
rectus femoris, vastus medialis, vastus intermedius, vastus lateralis
extensors of the leg at the knee
Flexors of the thigh at the hip (other gp of anterior compartment)
pectineus
satorius
Iliacus (the other part of illiopsoas)
Psoas major (one part of Iliopsoas)
blood supply of thigh
gluteal: inferior and superior arteries
anterior compartemnt: femoral artery and deep (femoral) artery
medial compartment: obturator artery and deep (femoral) artery
posterior compartment: deep (femoral artery) and femoral artery
medial compartment of thigh job
- are all adductors of the thigh at the hip except obturator externus
- All of them also flex except adductor longus n obturator externus (rotates thigh laterally at hip)
medial compartment of thigh innervation
all obturator nerve except
Hamstring part of Adductor magnus-tibial part of sciatic nerve
posterior compartment of thigh job
• flexors of the leg at the knee + extensors of the thigh at the hip (except the short head of the biceps femoris- Flexes leg, rotates laterally)
hamstrings=
Semitendinosus
Semimembranosus
Biceps femoris long head
originate from ischial tuberosity
posterior compartment of thigh innervation
hamstrings: Tibial nerve (from sciatic) – L5, S1, S2
biceps femurs short head:Fibular division of sciatic nerve
Biceps femoris long head protects
sciatic nerve
UNHAPPY triad
due to lateral blow to side of knee where thigh is rotated n leg is straight
head n neck of femur blood supply
medial circumflex n artery of ligament of head of femur
innervation of piriformis
anterior rami of S1-S2
obturator internus and superior gamellus innervation
nerve to obturator internus (L5-S1)
inferiror gamellus and quadratus femoris
nerve to quadratus femoris (L5,S1)
obturator externus job
lateral rotation of thigh
pectineus job
flex n adduct thigh at hip
lateral circumflex femoral artery
supplies anterior part of gluteal region
knee joint ligaments -stop it from moving horizontally
medial collateral (tibial collateral) ligament (MCL) lateral collateral (fibular collateral) ligament (LCL)
helps stoping too much adduction/abduction
knee joints ligaments -stops moving anterior and posterior
Anterior cruciate ligament prevents anterior movement of tibia
Posterior cruciate ligament prevents posterior movement of tibia