Handy Bones
This group of bones makes up the fingers and thumb.
What are the phalanges?
This is the most commonly fractured carpal bone.
What is the scaphoid?
This type of joint is found between the phalanges and allows only flexion and extension.
What is a hinge joint?
A fracture at the base of the first metacarpal is known as this.
What is a Bennett fracture?
These bones form the palm of the hand and are numbered 1–5 from lateral to medial.
What are the metacarpals?
These four bones make up the proximal row of carpals.
What are the scaphoid, lunate, triquetrum, and pisiform?
The MCP joints allow this circular motion.
What is circumduction?
This fracture involves the neck of a metacarpal—commonly seen in punching injuries.
What is a Boxer's fracture?
This digit only has two phalanges instead of three.
What is the first digit (thumb)?
This bone has a hook-like projection and forms part of the medial border of the carpal tunnel.
What is the hamate?
This joint allows thumb opposition and is classified as a saddle joint.
What is the first CMC joint (carpometacarpal)?
This fracture involves the distal radius with dorsal displacement.
What is a Colles fracture?
These are often called “knuckles” and are visible on the dorsal hand when flexed.
What are the metacarpal heads?
This “snuff-box” anatomical landmark overlies which bone?
What is the scaphoid?
These two bones articulate at both a proximal and distal pivot joint.
What are the radius and ulna?
The opposite of a Colles fracture, this one involves palmar displacement.
What is a Smith fracture?
This long bone group has a head, neck, body, and base—fractures often occur at the neck.
What are the metacarpals?
The trapezium and scaphoid form the lateral margin of this structure.
What is the carpal groove (sulcus)?
Name all three joints that make up the elbow joint proper.
What are the humeroulnar, humeroradial, and proximal radioulnar joints?
A torus or buckle fracture results in this periosteal bulge.
What is impacted bulging of the periosteum?