Muscles
_____ and popliteus decrease strain on the PCL.
Quads
Which facet has a larger articulation for the patella?
The superior gluteal nerve innervates these three muscles.
Gluteus Medius
Gluteus Minimus
Tensor fasciae latae
Which way does your feet face for femoral retroversion & anteversion?
retroversion: out
The pubofemoral ligament is located in which capsule and resists which movements?
Anterior capsule
Resists EXT/ADD/ER
What two muscles in WB create a posterior shear and decrease strain on the ACL?
Gluteus maximus and soleus
Tibial condyles are flat and slighty ____.
Name a muscle innervated by the obturator nerve.
Gracilis
ADD group
The superior and inferior gluteal arteries lie within which parts of the hip joint capsule?
proximal and posterior joint capsule
This hip joint ligament is intra-articular but extra-synovial
Ligamentum teres
Which muscle does all of these actions:
Flexes the hip (@coxal joint)
Laterally Rotates the hip
Flexes the knee (@tibiofemoral joint)
Medially rotates the flexed knee (@tibiofemoral joint)
Sartorius
What is the shape of the lunate surface?
3/4 of a circle
What artery vascularizes the posterior aspect of the knee?
Popliteal artery
Cam vs Pincer impingement
Cam: overgrowth of the femoral head/neck
Pincer: overgrowth on the acetabulum
When are the hip joint ligaments in an open packed position?
30 degrees flexion
30 degrees ABD
Slight ER
Iliacus origin and insertion
Origin: illiac fossa
Insertion: lesser trochanter
What is the largest facet on the distal articular surface of the greater trochanter?
Lateral facet
What does the common iliac artery split into?
External Iliac Artery
Internal Iliac Artery
How do you calculate Q-angle? (And what are normal values)
ASIS --> midpoint of the patella
TT --> midpoint of the patella
10-15 degrees
T/F: the ACL wraps around the PCL with IR (which increases its tension.)
True
External rotators of the hip
Piriformis
Gemellus superior
Obturator internus
Gemellus inferior
Obturator externus
Quadratus femoris
This is the attachment site for the greater trochanter.
Greater trochanter
The great saphenous vein runs on the ____ aspect of the leg.
Medial
Explain the screw home mechanism (closed chain extension).
Femur moves medially rotates on the tibia in the last 5-10 degrees of knee extension.
When is the anterolateral bundle taut?
80-90 degrees of flexion