Monday, 23 February 2015

Rectus Femoris - 1 of 4 Quads

I've been saving my favourite quadricep muscle for last! 
RECTUS FEMORIS (Rec Fem) is special because not only does it cross the knee joint (and extend the leg - like the other three quad muscles) but it also crosses the HIP Joint 
- help you to flex your hip.

Because of this, Rectus Femoris is part of the "Hip Flexor Group" - along with IlioPsoas  
Rectus Femoris is superficial - it lives on top of the other quads. However, portions of the Sartorius and TFL muscle cross on top of Rec Fem  (making them superficial to Rec Fem)

 Muscle Attachment Points:

Origin: Anterior Inferior Iliac Spine (AIIS)

Insertion: Tibial Tuberosity 
(same attachment point as the rest of the quads )

original image c/o

tibial tuberosity is just below the knee cap - on the tibia :)

Rectus Femoris Muscle Action(s):

a) extends the leg at the knee joint
b) flexes the thigh @ the hip (coxal) joint
(aka Hip Flexion)



And that's Rectus Femoris!
we're done the quads!

The other quads are: 

and what do they all have in common? 
They all join together, turn into the patellar ligament/tendon - and insert into the same place - the tibial tuberosity ! And they help you kick stuff..