O: Ischial tuberosity (flat tendon/aponeurosis)

I: Posterior medial condyle of tibia and joint capsule of the knee

A: Hip: extension

Knee: flexion, MR

O: Ishchial Tuberosity

I: Anterior-medial surface of the proximal tibia (pes aserinus)

Tendon curves around medial condyle, posterior to the knee

A: Hip: extension

Knee: flexion, MR

SGT

O: short head: distal half of linea aspera and posterior side of LFIS.

long head: ischial tuberosity

I: Head of fibula

A: hip: extension

Knee: flexion, LR

O: Inner surface of inferior pubic ramus

I: Anterior-medial surface of the proximal tibia (pes anserinus). 

Tendon curves around medial condyle, posterior to the knee

A: Hip: adduction, flexion

knee: flexion, medial rotation

SGT

O: Anterior superior iliac spine

I: Anterior-medial surface of the proximal tibia (pes anserinus)

Tendon curves around the medial condyle, posterior to the knee. 

Hint: tuns in the "trench" formed by the quadriceps and the adductors.

A: hip: adduction flexion

knee: flexion, MR