olecranon

Ulna's proximal projection

The olecranon is the bony projection at the tip of the elbow—the part of the ulna that forms the point you rest on when leaning on a table.

It's the attachment point for the triceps muscle and the hard knob you feel when you bend your arm.

He bruised his olecranon falling on the ice.

anatomy

ulna

Inner forearm bone

humerusUpper arm's long bone
forearmArm's lower half
tricepsThree-headed arm muscle

bone · protuberance · epiphysis · ossification · cubital · periosteum · cortical · tuberosity · fossa · notch

elbow

bursitis

Inflamed joint cushions

tendonitisInflamed tissue connecting muscle
cubitalOf the elbow
articulationClear vocal expression

flexion · extension · pronation · supination · fracture · dislocation · swelling · tenderness · collateral · palpation

joint

synovial

Of joint membranes

cartilageFlexible connective body tissue
ligamentConnective tissue between bones
bursaJoint's friction buffer

capsule · hinge · articulation · lubrication · inflammation · arthritis · synovitis · meniscus

injury

fracture

Split in hard material

bursitisInflamed joint cushions
tendonitisInflamed tissue connecting muscle
dislocationForced out of position

trauma · swelling · contusion · avulsion · comminuted · displaced · immobilization · splint · cast · reduction

lever

fulcrum

Lever's balance point

tricepsThree-headed arm muscle
mechanicsScience of motion
torqueRotational force measurement

extension · force · mechanical advantage · pivot · insertion · effort · load · leverage

biomechanics

fulcrum

Lever's balance point

leverPivoting bar for lifting
tricepsThree-headed arm muscle
extensionAdded part or duration

force · torque · pivot · insertion · attachment · load · effort · kinetics

Opposites

elbow anatomy position

olecranoncoronoid process

Triangular skeletal projection

Family

cranium, cranial

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