from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Situated over or above a trochlea or trochlear surface; applied especially to one of the subdivisions of the trigeminal nerve.
from the GNU version of the Collaborative International Dictionary of English
- adj. Situated over or above a trochlea or trochlear surface; -- applied esp. to one of the subdivisions of the trigeminal nerve.
from The Century Dictionary and Cyclopedia
- Situated over the inner angle of the orbit of the eye, where the tendon of the superior oblique muscle passes through its pulley or trochlea: as, the supratrochlear nerve.
- Situated on the inner condyle of the humerus, above the trochlear surface with which the ulna articulates; epitrochlear; supracondylar: as, the supratrochlear notch. See cut under supracondylar.
Midway between the apex and base of the orbit it divides into two branches, supratrochlear and supraorbital.
It runs forward along the upper border of the Rectus medialis, and is joined, near the pulley of the Obliquus superior, by a filament from the supratrochlear nerve.
The supratrochlear nerve (n. supratrochlearis), the smaller of the two, passes above the pulley of the Obliquus superior, and gives off a descending filament, to join the infratrochlear branch of the nasociliary nerve.
One or two supratrochlear glands are placed above the medial epicondyle of the humerus, medial to the basilic vein.
A few of the ulnar lymphatics end in the supratrochlear glands, but the majority pass directly to the lateral group of axillary glands.
These fossæ are separated from one another by a thin, transparent lamina of bone, which is sometimes perforated by a supratrochlear foramen; they are lined in the fresh state by the synovial membrane of the elbow-joint, and their margins afford attachment to the anterior and posterior ligaments of this articulation.
The Frontal Artery (a. frontalis), one of the terminal branches of the ophthalmic, leaves the orbit at its medial angle with the supratrochlear nerve, and, ascending on the forehead, supplies the integument, muscles, and pericranium, anastomosing with the supraorbital artery, and with the artery of the opposite side.
Cadaver studies have demonstrated that the supratrochlear artery is reliably located within 1.7 - 2.2 cm from midline, and there is debate as to whether doppler identification of the artery is necessary.
Paramedian Forehead Flap Standard PMFF = axial myocutaneous transposition flap based on the supratrochlear artery.