Overview - upper and lower limb Flashcards
Femoral head fits into?
Acetabulum
Anatomical neck of the femur is?
Just inferior to the femoral head
Surgical neck of the femur is?
Region of the femoral neck that breaks the most
Relation of anatomical and surgical neck in the femur?
In the femur, these are the same
Muscles attach where on the femur?
Greater and lesser trochanter
Shenton’s line is?
Line from superior pubic rami to medial border of femoral neck
Change to Shenton’s line indicates?
Damage to the neck of the femur e.g. fracture
Three ligaments of the hip joint? Anterior or posterior?
Iliofemoral - anterior
Pubofemoral - anterior
Ischiofemoral - posterior
Strongest ligament of the hip joint?
Anterior iliofemoral ligament
Hip joint is stable or not very stable?
Very very stable
Appearance of the iliofemoral ligamnet?
Y-shaped ligament
Most common dislocation at the hip and why?
Posterior dislocation - the iliofemoral is strongest ligament and this is anterior
Change in shape of the ligaments to the hip joint upon movement of the leg is?
Relaxed when the hip is flexed
When leg moves backwards and extends, ligaments twist and turn
When is the femoral head inserted deeper into the acetabulum?
When the ligaments of the hip twist upon leg extension
Ligamentum teres is where?
Inside the acetabulum
Ligamentum teres function is?
Helps to strengthen the joining of the head of the femur into the acetabulum
What runs within the ligamentum teres?
Artery
Main blood supply to the hip joint is?
Circumflex arteries - medial and lateral
Circumflex arteries originate from?
Femoral artery
Artery to the head of the femur provides blood supply to the hip in whom?
Children
Artery to the head of the femur originates from?
Obturator artery
Necrosis of head of the femur can be caused by?
Fracture to the neck of the femur
When does the external iliac artery become the femoral artery?
When it passes under the inguinal ligament
What branch does the external iliac artery give off?
Inferior epigastric artery
Inferior epigastric artery goes in which direction?
Superiorly
What are the three branches given off by the femoral artery?
Profunda femoris
Lateral circumflex
Medial circumflex
What does the femoral artery become and where?
Popliteal artery when it passes over the popliteus muscle
Popliteal artery is long or short?
Short
Popliteal artery bifrucates into which two arteries?
Anterior tibial
Posterior tibial
Posterior tibial becomes which two arteries at teh posterior leg?
Continues as the posterior tibial artery
Gives off the fibular artery
Two ligaments forming the greater and lesser sciatic foramen are?
Sacrospinous
Sacrotuberous ligaments
How can you differentiate between the sacrospinous and sacrotuberous ligaments?
Sacrospinous ligament comes across and divides like the SPINE of the SCAPULA
Greater and lesser sciatic foramen - relation to each other?
Greater sciatic foramen is superior and lesser sciatic foramen is inferior
Muscle passing through greater sciatic foramen is?
Piriformis
Four nerves through greater sciatic foramen is?
Sciatic nerve
Pudendal nerve
Inferior gluteal nerve
Superior gluteal nerve
Which nerve through the greater sciatic foramen then passes back out through the lesser sciatic foramen?
Pudendal nerve
Where should IM injection be given in the bum and why?
Upper outer gluteal quadrant - avoid the sciatic nerve
What does the gluteus maximus insert into distally?
3/4 - iliotibial tract
1/4 - gluteal tuberosity of the femur
Iliotibial tract inserts into what?
Anterolateral tubercle of the tibia
Function of gluteus maximus is? x2
Hip extension
Lateral rotation
Function of piriformis?
Aids gluteus maximus in lateral rotation
Nervous innervation to the lateral rotators?
L5, S1, S2
Six muscles that function for lateral rotation of the hip?
Gluteus maximus Piriformis Superior gemellus Inferior gemellus Obturator internus Quadratus femoris
Superior gluteal nerve innervates? x2
Gluteus medius
Gluteus minimis
Tensor fascia latae
Inferior gluteal nerve innervates?
Gluteus maximus
Trendelenberg test involves which nerve?
Superior gluteal
Function of gluteus minimus and medius?
Abduction of the hip
Results of the trendelenberg test?
If there is damage then the hip will drop on the unaffected side
Drooping on one side - other side damage to superior gluteal nerve