Olecranon fossa
Encyclopedia
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
.
Humerus
The humerus is a long bone in the arm or forelimb that runs from the shoulder to the elbow....
, superior to the trochlea
Trochlea
Trochlea is a term in anatomy. It refers to a grooved structure reminiscent of a pulley's wheel.Most commonly, trochleae bear the articular surface of saddle and other joints:* Trochlea of humerus* Trochlear process of the Calcaneus...
, in which the summit of the olecranon
Olecranon
The olecranon is a large, thick, curved bony eminence of the forearm that projects behind the elbow.It is situated at the upper end of the ulna, one of the two bones in the forearm...
is received during extension of the forearm
Forearm
-See also:*Forearm flexors*Forearm muscles...
.