These muscles attach to the medial side of the tibia in the shape of a ‘goose’s foot’ to form the pes anserinus (Pes anserine means goose foot).
Pes anserinus includes:
Have a look at this anatomy paper if you want to see cadaver images of the pes anserinus and the knee – here.
Palpation guide:
Here is a handy little palpation guide for remembering the muscle attachments behind the knee.
Place hands behind knees.