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.