Bone landmarks

Canal or Meatus

A large passageway through a bone.

Sinus

A chamber within a bone, typically filled with air.

Foramen

A small, rounded opening for blood vessels or nerves to pass through.

Fissure

An elongated cleft or gap.

Process

Any projection or bump.

Trochanter

A large, rough projection.

Head

An expanded proximal end of a bone that forms part of a joint.

Neck

A narrow connection between the head and shaft of a bone.

Diaphysis (Shaft)

The elongated tubular body of a long bone.

Facet

A small, flat articular surface.

Tubercle

A small rounded projection.

Sulcus

A deep, narrow groove.

Tuberosity

A small, rough projection that may occupy a broad area.

Trochlea

A smooth, grooved articular process that is shaped like a pulley.

Condyle

A smooth, rounded articular process.

Crest

A prominent ridge.

Fossa

A shallow depression in a bone.

Line

A low ridge, more delicate than a crest.

Spine

A pointed or narrow process.

Ramus

A thick projection that forms an angle with the main body of the bone.