Post Leg Muscles

Question 1

Bicep Femoris (long)- O, I, IN, A

Answer 1

O- ish tub (inf/med), Sacrotuberous lig and semitendinosis tendon

I- Head of fibula, Fibular collat lig, lat condyle of tibia

IN- Sciatic nerve (tib div) L5,S1,S2

A- Flexes leg, lat rotates flexed leg

Question 2

Biceps Femoris (short)- O, I, IN, A

Answer 2

O- linea aspea (lat), lat surpacondylar line, lat intermusc septum

I- Head of fibula, Fibular collat lig, lat condyle of tibia

In- Sciatic (fib) L5, S1, S2

A- Flexes leg, lat rotates flexed leg

Question 3

Semitendinosus- O, I, IN, A

Answer 3

O- ish tub (sup med), common w long head of bicep femoris

I- Proximal medial shaft of tibia, Post to gracilis + sartoriasis as pes anserinus

In- Sciatic (tib) L5,S1,S2

A- extend thigh, flex leg, medially rotate flexed leg

Question 4

Semimembranosus- O, I, IN, A

Answer 4

O- ish tub (sup lat)

I- Medial tibial condyle (post), popliteal fascia, crural fascia, Tibial collateral lig

IN- Sciatic (tib) L5, S1, S2

A- extend thigh, flex leg, medially rotate flexed leg

Question 5

Popliteus- O, I, IN, A

Answer 5

O- lat femoral condyle (lat), lat aspect of knee joint, lat meniscus

I-Post surface of tibia (sup to soleal line)

IN- Tibial nerve (l4,5,s1)

A- flexes leg at knee, pulls lat meniscus post, unlocks knee joint