abstract: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.
Withthis kind of nail, humeralshaftfractures were fixed by inserting needles through the upper point of olecranonfossaandmadeclinicalevaluationonits effects.