Olecranon fossa

Olecranon fossa
Left humerus. Posterior view (olecranon fossa visible at bottom center)
Left humerus. Posterior view (olecranon fossa visible at bottom center)
Details
Identifiers
Latin	Fossa olecrani
Dorlands /Elsevier	f_14/12376423
TA	A02.4.04.024
FMA	23450
*Anatomical terms of bone* [edit on Wikidata]

The olecranon fossa is a deep triangular depression on the posterior side of the humerus, superior to the trochlea, in which the summit of the olecranon is received during extension of the forearm.

Additional images

Elbow joint. Deep dissection. Posterior view.
Elbow joint. Deep dissection. Posterior view.
Elbow joint. Deep dissection. Posterior view.

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

External links

aplab - BioWeb at University of Wisconsin System
Photo of model at Waynesburg College skeleton3/olecranonfossa
radiographsul at The Anatomy Lesson by Wesley Norman (Georgetown University) (xrayelbow)
Imaging at umich.edu

Bones of the arm

Shoulder girdle, clavicle

Scapula

fossae (subscapular, supraspinatous, infraspinatous)
notches (suprascapular, great scapular)
glenoid cavity
tubercles (infraglenoid, supraglenoid)
spine of scapula
acromion
coracoid process
angles (superior, inferior, lateral)

Humerus

upper extremity: necks (anatomical, surgical)
tubercles (greater, lesser)
bicipital groove
body: radial sulcus
deltoid tuberosity
lower extremity: capitulum
trochlea
epicondyles (lateral, medial)
supracondylar ridges (lateral, medial)
fossae (radial, coronoid, olecranon)

Forearm

Radius	proximal (head, tuberosity) distal (ulnar notch, styloid process, Lister's tubercle)

Ulna	upper extremity (tuberosity, olecranon, coronoid process, radial notch, trochlear notch) body lower extremity (head, styloid process)

Hand

Carpal bones	scaphoid lunate triquetral pisiform trapezium trapezoid capitate hamate hamulus

Metacarpal bones	1st 2nd 3rd 4th 5th

Phalanges	proximal intermediate distal

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