olecranon fossa

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o·lec·ra·non fos·sa

a hollow on the dorsum of the distal end of the humerus, just above the trochlea, in which the olecranon process of the ulna rests when the elbow is extended.
Synonym(s): fossa olecrani [TA], anconal fossa

olecranon fossa

the depression in the posterior surface of the humerus that receives the olecranon of the ulna when the forearm is extended. Compare coronoid fossa.

olecranon fossa

On the posterior surface of the lower end of the humerus, a depression proximal to the trochlea and between the medial and lateral epicondyles; it is analogous to the coronoid fossa on the opposite side of the humerus. During full extension of the forearm, the olecranon process of the ulna fits into the olecranon fossa of the humerus
See also: fossa


pl. fossae [L.] a trench or channel; a hollow or depressed area.

acetabular fossa
the nonarticular part of the acetabulum.
amygdaloid fossa
the depression in which the palatine tonsil is lodged in some species.
cerebral fossa
any of the depressions on the floor of the cranial cavity.
lateral cerebral fossa
see vallecula sylvii.
fossa clitoridis
the cavity in which the glans clitoridis resides.
condylar fossa, condyloid fossa
either of depressions lateral to the occipital condyles.
coronoid fossa
a depression in the humerus for the coronoid process of the ulna. Called also radial fossa.
cranial fossa
any one of the three hollows (rostral, middle and caudal) in the base of the cranium for the lobes of the brain.
ethmoid fossa
the hollow in the cribriform plate of the ethmoid bones, for the olfactory bulb.
fossa glandis
depression at the end of the stallion glans penis, housing the urethral process; it harbors smegma and potential pathogens.
glenoid fossa
mandibular fossa.
hyaloid fossa
a depression in the front of the vitreous body, lodging the lens.
hypophyseal fossa, hypophysial fossa
a depression in the sphenoid lodging the pituitary gland; called also pituitary fossa.
infratemporal fossa
an irregularly shaped cavity medial or deep to the zygomatic arch.
intercrural fossa
the fossa between the cerebral peduncles.
interpeduncular fossa
a triangular depression between the crura cerebri.
ischiorectal fossa
a potential space between the pelvic diaphragm, the ischium and the skin.
lacrimal sac fossa
excavated from the lacrimal bone and housing the lacrimal sac.
lingual fossa
the transverse groove on the dorsum of the bovine tongue between the torus and the tip.
mandibular fossa
a depression in the pars squamosa of the temporal bone at the base of the zygomatic process, in which the condyle of the mandible rests; called also glenoid fossa.
nasal fossa
the right or left half of the nasal cavity.
fossa nudatae
see synovial fossa (below).
olecranon fossa
between the epicondylar crests at the distal end of the humerus; receives the anconeal process of the ulna.
fossa ovalis cordis
a fossa in the right atrium of the heart; the remains of the fetal foramen ovale.
ovarian fossa
a shallow depression on the surface of the mare's ovary. Called also ovulation fossa.
paralumbar fossa
the hollow of the flank, bounded dorsally by the transverse processes of the lumbar vertebrae, cranially by the last rib and caudally by the muscles of the thigh.
pituitary fossa
hypophyseal fossa.
radial fossa
see coronoid fossa (above).
rhomboidal fossa
floor of the fourth ventricle.
supracondylar fossa
the depression between the condyles of the femur.
supraspinous fossa
a depression cranial to the spine of the scapula.
synovial fossa
depressed, cartilage-free islands in large articular cartilages; no function has been determined for them. Called also fossa nudatae.
temporal fossa
an area on the side of the cranium bounded by the temporal line and the zygomatic arch, lodging the temporal muscle.
trochanteric fossa
the deep fossa at the proximal end of the femur between the greater and lesser trochanters.
References in periodicals archive ?
Of the 92 cases of humerus fractures which were admitted in the hospital 22 cases were supracondylar fractures in children requiring surgery, 21 cases were around the proximal humerus involving the surgical neck, 16 cases were around distal end of humerus in adults at or below the level of olecranon fossa, 9 of them with intra-articular extension.
Of all humerus fractures 33 cases had fracture shaft of humerus, out of which 7 cases were having fracture either very near to the surgical neck of humerus or were less than three centimetres from olecranon fossa into the shaft; 9 cases were treated with open reduction and internal fixation with DCP plate either because of radial nerve palsy pre-operatively or due to narrow marrow cavity; 1 case was treated with bridge plating due to comminution, 3 cases were treated with external fixator due to open contaminated injuries.
At arthroscopic examination, a large cyst like lesion in the posterior aspect of the elbow in the medial corner of the olecranon fossa was found.
Caption: Figure 1 Diagram of synovial cyst arising from posteromedial aspect of the elbow joint causing impingement of the olecranon fossa.
In these cases arthroscopic debridement of the olecranon fossa and shaving bone of the tip of the olecranon is effective.
Arthroscopy shows posteromedial osteophytes on the olecranon tip, with impingement of the olecranon fossa.
Then the extremity is externally rotated and medial pin is placed directly through the apex of the medial epicondyle, crossing the lateral k wire just proximal to the olecranon fossa and engaging the lateral cortex.
The Outerbridge-Kashiwagi arthroplasty allows for debridement of both anterior and posterior compartments through a drill hole created with a trephine in the olecranon fossa.
5mm cortical working and locking screws where necessary under fluoroscopic imaging, care was taken not to impinge on the olecranon fossa and the plate was taken as for distally down the lateral column as necessary for stable fixation.
Guide wire was removed & humeral driver was attached to the jig & nail was advanced by gentle tapping until it is 1 to 2 cm proximal to olecranon fossa.
In the group operated by single locking plate, out of 10 cases 4 cases went into failure with loss of fixation and impingement at olecranon fossa occurred.