Facet
A smooth flat articular surface
Sulcus
A shallow cleft-like groove (often elongated)
Head
An epiphyseal articular region separated from the shaft by the neck (usually the proximal region)
Trochlea
A smooth grooved articular process (shaped like a pulley)
Tuberosity
A large rounded projection (a roughened area)
Foramen
A rounded opening (hole) on the bone surface for blood vessels and or nerves
Process
Any projection or elevation (a bony prominence)
Crest
A narrow prominent ridge
Line
A low narrow ridge (less prominent)
Ramus
An (arm like) extension of a bone making an angle to the rest of the structure
Sinus
A chamber within a bone, normally filled with air
Fissure
A narrow slit-like opening
Tubercle
A small rounded projection or process
Canal
A bony passageway through which blood vessels and nerve fibers pass
Articulation
Location where two bones join together
Trochanter
A large irregular rough projection (located only on femur)
Condyle
The broad epiphyseal region with large rounded articular processes
Fossa
A shallow concavity (depression) may be an articulating surface
Spine
A narrow ridge of bone (a sharp slender projection)