Femur

Femur
Position of femur (shown in red)
Left femur seen from behind
Details
Origins	Gastrocnemius, vastus lateralis, vastus medialis and vastus intermedius
Insertions	Gluteus maximus, gluteus medius, gluteus minimus, iliopsoas, lateral rotator group, adductors of the hip
Articulations	Hip: acetabulum of pelvis superiorly knee: with the tibia and patella inferiorly
Identifiers
Latin	os femoris, os longissimum
MeSH	D005269
TA98	A02.5.04.001
TA2	1360
FMA	9611
Anatomical terms of bone [edit on Wikidata]

The femur (/ˈfiːmər/; pl.: femurs or femora /ˈfɛmərə/),^[1][2] or thigh bone is the only bone in the thigh. The thigh is the region of the lower limb between the hip and the knee. In many four-legged animals the femur is the upper bone of the hindleg.

The top of the femur fits into a socket in the pelvis called the hip joint, and the bottom of the femur connects to the shinbone (tibia) and kneecap (patella) to form the knee. In humans the femur is the largest and thickest bone in the body.